International Military Discussion
International News
Taiwan denies its cruise missile under development could carry nuclear warhead
USAF may seek supersonic and unmanned capabilities for bomber
US Navy wants under 1,000 sailors on new carriers
Interesting...
F-22 Raptor's makers knew for 10 years of corrosion problem, which is costing millions to fix at Hill
U.S. offers Russia significant new concessions to gain support for missile shield
Space chief: Chinese ASAT test spurred need for space-asset protection
Korea Aerospace Industries (KAI) and Eurocopter sign MOU for a Joint Venture company to commercialise the Korean Utility Helicopter
The Israel Syria Saga...
EXCLUSIVE: The Case for Israel's Strike on Syria
Syrians Disassembling Ruins at Site Bombed by Israel, Officials Say
UN Nuclear Agency Examines Syria Images
Taiwan denies its cruise missile under development could carry nuclear warhead
USAF may seek supersonic and unmanned capabilities for bomber
US Navy wants under 1,000 sailors on new carriers
Interesting...
F-22 Raptor's makers knew for 10 years of corrosion problem, which is costing millions to fix at Hill
U.S. offers Russia significant new concessions to gain support for missile shield
Space chief: Chinese ASAT test spurred need for space-asset protection
Korea Aerospace Industries (KAI) and Eurocopter sign MOU for a Joint Venture company to commercialise the Korean Utility Helicopter
The Israel Syria Saga...
EXCLUSIVE: The Case for Israel's Strike on Syria
Syrians Disassembling Ruins at Site Bombed by Israel, Officials Say
UN Nuclear Agency Examines Syria Images
Boeing Completes 200th P-8A Live-Fire Shot
Boeing [NYSE: BA] and its P-8A Poseidon team last month completed the program's 200th live-fire shot at the U.S. Navy's Weapons Survivability Laboratory in China Lake, Calif.
P-8A live-fire testing enhances aircraft survivability and reduces program risk by providing engineers with reliable data that can be incorporated into the Poseidon's dry bay fire-protection design.
During testing, live ordnance is fired into simulated aircraft sections to replicate a potential threat environment. The systems being designed and developed will ensure dry bay fires are automatically detected and suppressed. Dry bays are locations adjacent to fuel that also may contain electrical and hydraulic lines as well as environmental control systems or engine bleed-air lines.
"The data we've gathered from this early live-fire testing already has been incorporated into our system design and confirms we're moving in the right direction," said Paul Martin, Boeing P-8A Test and Evaluation manager. "Reducing vulnerability and enhancing survivability are the ultimate goals, and we will continue to work hand-in-hand with the Navy as the team proceeds toward live-fire certification."
P-8A fire suppression testing began in April 2005 and will continue through 2009. Full-scale live-fire testing is slated for 2012 using the P-8A static test aircraft.
The P-8A is a long-range anti-submarine warfare, anti-surface warfare, intelligence, surveillance and reconnaissance aircraft capable of broad-area, maritime and littoral operations. A derivative of the Next-Generation 737-800, the P-8A combines superior performance and reliability with an advanced mission system that ensures maximum interoperability in the future battle space.
The U.S. Navy plans to purchase 108 P-8As to replace its fleet of P-3C aircraft. The first aircraft will be delivered for flight test in 2009, and initial operational capability is slated for 2013. The Boeing-led team includes CFM International, Northrop Grumman, Raytheon, Spirit AeroSystems and GE Aviation.
Boeing [NYSE: BA] and its P-8A Poseidon team last month completed the program's 200th live-fire shot at the U.S. Navy's Weapons Survivability Laboratory in China Lake, Calif.
P-8A live-fire testing enhances aircraft survivability and reduces program risk by providing engineers with reliable data that can be incorporated into the Poseidon's dry bay fire-protection design.
During testing, live ordnance is fired into simulated aircraft sections to replicate a potential threat environment. The systems being designed and developed will ensure dry bay fires are automatically detected and suppressed. Dry bays are locations adjacent to fuel that also may contain electrical and hydraulic lines as well as environmental control systems or engine bleed-air lines.
"The data we've gathered from this early live-fire testing already has been incorporated into our system design and confirms we're moving in the right direction," said Paul Martin, Boeing P-8A Test and Evaluation manager. "Reducing vulnerability and enhancing survivability are the ultimate goals, and we will continue to work hand-in-hand with the Navy as the team proceeds toward live-fire certification."
P-8A fire suppression testing began in April 2005 and will continue through 2009. Full-scale live-fire testing is slated for 2012 using the P-8A static test aircraft.
The P-8A is a long-range anti-submarine warfare, anti-surface warfare, intelligence, surveillance and reconnaissance aircraft capable of broad-area, maritime and littoral operations. A derivative of the Next-Generation 737-800, the P-8A combines superior performance and reliability with an advanced mission system that ensures maximum interoperability in the future battle space.
The U.S. Navy plans to purchase 108 P-8As to replace its fleet of P-3C aircraft. The first aircraft will be delivered for flight test in 2009, and initial operational capability is slated for 2013. The Boeing-led team includes CFM International, Northrop Grumman, Raytheon, Spirit AeroSystems and GE Aviation.
-
gopal.suri
- BRFite
- Posts: 191
- Joined: 26 May 2007 17:22
DCNS delivered fifth Formidable-class frigate to the Republic of Singapore Navy
Written on October 22, 2007 – 10:54 pm | by FIDSNS | |
On the 19th October, DCNS delivered RSS Stalwart, the fifth Formidable-class frigate to the Republic of Singapore Navy (RSN). RSS Stalwart will now join the RSN for advanced trials and qualification.
Written on October 22, 2007 – 10:54 pm | by FIDSNS | |
On the 19th October, DCNS delivered RSS Stalwart, the fifth Formidable-class frigate to the Republic of Singapore Navy (RSN). RSS Stalwart will now join the RSN for advanced trials and qualification.
-
gopal.suri
- BRFite
- Posts: 191
- Joined: 26 May 2007 17:22
Royal Moroccan Navy to buy FREMM multimission frigate
In the course of French President Nicolas Sarkozy’s recent state visit to Morocco, the Kingdom’s highest authorities confirmed an agreement between the two countries to provide the Royal Moroccan Navy with a FREMM multimission frigate.
First Scorpene for Malaysia named
Today’s ceremony is an important milestone in the execution of the contract signed on 5 June 2002 by the Malaysian government and DCNS as it marks the completion of the construction phase. In a few weeks’ time, after completing equipment quay-side testing, the boat will be ready to start its sea trials. The Tunku Abdul Rahman is scheduled to be handed over to the Royal Malaysian Navy (RMN) in January 2009 and the second boat at the end of the 2009’s.
In the course of French President Nicolas Sarkozy’s recent state visit to Morocco, the Kingdom’s highest authorities confirmed an agreement between the two countries to provide the Royal Moroccan Navy with a FREMM multimission frigate.
First Scorpene for Malaysia named
Today’s ceremony is an important milestone in the execution of the contract signed on 5 June 2002 by the Malaysian government and DCNS as it marks the completion of the construction phase. In a few weeks’ time, after completing equipment quay-side testing, the boat will be ready to start its sea trials. The Tunku Abdul Rahman is scheduled to be handed over to the Royal Malaysian Navy (RMN) in January 2009 and the second boat at the end of the 2009’s.
International News
MND denies United States may sell Tomahawks
Iran to buy 24 jet fighters from China
Igorr earlier had posted the photos for these....
Details emerge of Russia's latest cruise missiles
LOCKHEED MARTIN COMPLETES PROOF TESTING OF RATTLRS VEHICLE
MND denies United States may sell Tomahawks
Iran to buy 24 jet fighters from China
Igorr earlier had posted the photos for these....
Details emerge of Russia's latest cruise missiles
LOCKHEED MARTIN COMPLETES PROOF TESTING OF RATTLRS VEHICLE
Brazil's nuclear sub ambitions.
http://www.coha.org/2007/10/26/lula-wan ... submarine/
http://www.coha.org/2007/10/26/lula-wan ... submarine/
X-Posting from Secret Project
Jane's Defence Weekly - October 24, 2007
Details emerge of Russia's latest cruise missiles
Robert Hewson
Exclusive images of Russia's two most advanced long-range airborne weapons - the Kh-101 and Kh-555 conventionally armed cruise missiles - have recently been acquired by Jane's .
Russia has been modernising its cruise missile inventory over the past few years and has recently increased the operational tempo of the strategic bomber fleet that would deploy such weapons.
Developed by the Raduga Design Bureau (now part of the unified Tactical Missiles Corporation), the Kh-555 is a modified version of the original nuclear-tipped Kh-55 strategic stand-off weapon (AS-15 'Kent'). It is thought to have entered service in 2004, but details are scant. The Kh-101 is a stealth-optimised design, conceived as a Kh-55 replacement. No images of this missile have previously been shown in public.
In the imagery acquired by Jane's , the Kh-101 is seen carried in pairs on four pylons under an upgraded Tu-95MS16 'Bear-H' (Tu-95MSM) bomber. The Tu-95MS16 variant can carry a theoretical load of 16 cruise missiles (Kh-55s): 10 on underwing pylons and six on its MKU-6-5 internal rotary launcher. This 'overload', which requires two pylons each to carry three missiles, proved to be impractical and is not used operationally. Typically, the combat load for a 'Bear' would be carried on the internal launcher only to maximise aircraft range.
The Tu-95MS16 variant maintains the ability to carry underwing missiles as seen in the image (unlike the Tu-95MS6). The eight Kh-101 configuration may be the (maximum) standard load for this new weapon. The aircraft is adorned with photo calibration markings and so the red-painted missiles are likely to be a trial fit.
The Kh-101 appears to be longer than the Kh-55/555 series (approximately 7 m in length) with a more slender and angular design. The missile has a chiselled nose section and a flat-sided triangular main body, all calculated to reduce radar cross-section. Three folding tail fins are mounted at the end of a tapered rear section. A pop-out wing is mounted under the missile, which is thought to be powered by an NPO Saturn TRDD-50 turbojet. The podded engine is housed inside the rear of the missile and drops down on a pylon when the missile is released from its launch aircraft.
The operational status of the Kh-101 is still not clear, although it is obviously in an advanced test and development stage and is probably available for use. Russian sources note that flights with the missile and the Tu-95MSM have been ongoing for over a year.
Photographs of the Kh-555 being loaded onto a Tu-95 are significant because this missile had previously been associated only with the Tu-160 'Blackjack' bomber. It was always probable that the Kh-555 would be integrated with the Tu-95 but doing so increases the operational flexibility of Russia's bomber force and provides the Tu-95 with a modern conventional weapon capability for the first time.
Given the increased size of the Kh-101 (about 1 m longer than the Kh-55), it is unlikely that this missile can be carried on the standard MKU-6-5 internal launcher. It is possible that a conventionally armed Tu-95 could operate with a mix of external Kh-101s and internal Kh-555s.
KH-101
* The first pictures of the Kh-101 cruise missile to emerge in public show eight of the stealthy missiles loaded on an upgraded Tu-95MS bomber (Via Robert Hewson)
KH-555
* Russian ground crew load a Kh-555 into the internal weapons bay of a Tu-95MS. The missile’s conventional warhead section appears to be shorter than the nuclear Kh-55 (Via Robert Hewson)
Jane's Defence Weekly - October 24, 2007
Details emerge of Russia's latest cruise missiles
Robert Hewson
Exclusive images of Russia's two most advanced long-range airborne weapons - the Kh-101 and Kh-555 conventionally armed cruise missiles - have recently been acquired by Jane's .
Russia has been modernising its cruise missile inventory over the past few years and has recently increased the operational tempo of the strategic bomber fleet that would deploy such weapons.
Developed by the Raduga Design Bureau (now part of the unified Tactical Missiles Corporation), the Kh-555 is a modified version of the original nuclear-tipped Kh-55 strategic stand-off weapon (AS-15 'Kent'). It is thought to have entered service in 2004, but details are scant. The Kh-101 is a stealth-optimised design, conceived as a Kh-55 replacement. No images of this missile have previously been shown in public.
In the imagery acquired by Jane's , the Kh-101 is seen carried in pairs on four pylons under an upgraded Tu-95MS16 'Bear-H' (Tu-95MSM) bomber. The Tu-95MS16 variant can carry a theoretical load of 16 cruise missiles (Kh-55s): 10 on underwing pylons and six on its MKU-6-5 internal rotary launcher. This 'overload', which requires two pylons each to carry three missiles, proved to be impractical and is not used operationally. Typically, the combat load for a 'Bear' would be carried on the internal launcher only to maximise aircraft range.
The Tu-95MS16 variant maintains the ability to carry underwing missiles as seen in the image (unlike the Tu-95MS6). The eight Kh-101 configuration may be the (maximum) standard load for this new weapon. The aircraft is adorned with photo calibration markings and so the red-painted missiles are likely to be a trial fit.
The Kh-101 appears to be longer than the Kh-55/555 series (approximately 7 m in length) with a more slender and angular design. The missile has a chiselled nose section and a flat-sided triangular main body, all calculated to reduce radar cross-section. Three folding tail fins are mounted at the end of a tapered rear section. A pop-out wing is mounted under the missile, which is thought to be powered by an NPO Saturn TRDD-50 turbojet. The podded engine is housed inside the rear of the missile and drops down on a pylon when the missile is released from its launch aircraft.
The operational status of the Kh-101 is still not clear, although it is obviously in an advanced test and development stage and is probably available for use. Russian sources note that flights with the missile and the Tu-95MSM have been ongoing for over a year.
Photographs of the Kh-555 being loaded onto a Tu-95 are significant because this missile had previously been associated only with the Tu-160 'Blackjack' bomber. It was always probable that the Kh-555 would be integrated with the Tu-95 but doing so increases the operational flexibility of Russia's bomber force and provides the Tu-95 with a modern conventional weapon capability for the first time.
Given the increased size of the Kh-101 (about 1 m longer than the Kh-55), it is unlikely that this missile can be carried on the standard MKU-6-5 internal launcher. It is possible that a conventionally armed Tu-95 could operate with a mix of external Kh-101s and internal Kh-555s.
KH-101
* The first pictures of the Kh-101 cruise missile to emerge in public show eight of the stealthy missiles loaded on an upgraded Tu-95MS bomber (Via Robert Hewson)
KH-555
* Russian ground crew load a Kh-555 into the internal weapons bay of a Tu-95MS. The missile’s conventional warhead section appears to be shorter than the nuclear Kh-55 (Via Robert Hewson)
US Army selects UH-145. Another chopper based on the BK-117 design like our Dhruv.
http://www.skycontrol.net/UserFiles/Ima ... 5-3015.JPG
http://www.skycontrol.net/UserFiles/Ima ... 5-3015.JPG
another application of plasma stealth perhaps the first workable application
seems to be hiding the RCS of metal antennas which are naturally very high in RCS
http://flux.aps.org/meetings/YR98/BAPSD ... 00009.html
--
I would imagine a compact system could atleast hide the faceplate RCS of a
fighter radar....article above talks of the plasma tube itself as the antenna
but other writings on web talk of shrouding the metal antenna inside a
plasma tube.
seems to be hiding the RCS of metal antennas which are naturally very high in RCS
http://flux.aps.org/meetings/YR98/BAPSD ... 00009.html
--
I would imagine a compact system could atleast hide the faceplate RCS of a
fighter radar....article above talks of the plasma tube itself as the antenna
but other writings on web talk of shrouding the metal antenna inside a
plasma tube.
I checked the IEEE papers on plasma stealth just now. the work on US
navy antenna looks classified since the authors only gave the brief extract
I posted in su30 thread to ieee, there is no further details from them.
the below proves it is a serious field of study...BS doesnt get published
in IEEE journals. but I suspect the real meat of the work is fully classified
anywhere it is being done.
other work:
3-D SIMULATIONS FOR RADAR CROSS-SECTION
REDUCTION USING PLASMA ABSORBERS
B. Chaudhury and S. Chaturvedi
Institute for Plasma Research, Bhat
Gandhinagar - 382428, Gujarat, INDIA.
Radar cross section (RCS) is the measure of a target's
ability to reflect radar signals in the direction of the radar
receiver. A collisional unmagnetized plasma, surrounding
the target, acts as a good absorber of electromagnetic
waves over a wide frequency range, reducing its RCS.
This has given rise to world wide interest in Plasma
Stealth technology. We have performed 3-D Finite
Difference Time Domain (FDTD) simulations for
calculating electro-magnetic wave scattering and
absorption due to plasma-shielded objects.
We have earlier validated our 3-D calculations against
experimental results for wave scattering from a plasmashielded
metallic plate [1,2]. Those simulations yielded a
reasonable match with experimental measurements. That
study also showed that bending of waves inside plasma
due to density gradients plays as important a role as
absorption. Those results have major implications for
plasma stealth applications, which have heretofore
assumed that plasma absorption is the main mechanism.
We have also compared two techniques for studying the
bending/refraction of electromagnetic energy flow
through a plasma with spatial density gradients. These are
the accurate FDTD method and the much faster, albeit
more approximate, ray-tracing method [4].
Our earlier work [1] focused on the near-field region. The
RCS refers to far-field measurements. In this paper, we
present actual far-field (RCS) results for objects with
generic shapes, such as flat plates, cylinders and spheres,
both with and without plasma shielding. In this paper, we
also report on the dependence of bistatic RCS on plasma
parameters, such as the peak electron density, the spatial
profile of density and the collision frequency. Finally, we
provide a physical interpretation for the results. Such an
interpretation is only possible using the detailed spatiotemporal
evolution of electromagnetic fields that is
provided by the FDTD method [3]. To our knowledge, this
is the first detailed three dimensional calculation of
plasma-based RCS reduction for real-life objects.
1. B. Chaudhury and S. Chaturvedi, IEEE Transactions on
Plasma Science, Vol. 33(6), 2005, pp. 2027- 2034.
2. K.R.Stadler, J. Appl.Phys.,Vol.72(11),1992, 5089-5094.
3. K.S.Kunz and R.J.Luebbers, The Finite-Difference Time
Domain Method for Electromagnetics, CRC Press (1993).
4. B.Chaudhury and S.Chaturvedi, `Reduction of RCS by
plasma shielding:Comparison of 3-D FDTD calculations
with ray tracing', ICOPS 2005, Monterey, California.
----------------
I have the full PDF form of this paper and not posting all the text here
because it contains lot of math formula and charts which cannot be
cut pasted. if anyone wants it email robust_bear at yahoo and will be
sent tomorrow night. those in univs or ieee accounts can obtain it
yourself.
IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 33, NO. 6, DECEMBER 2005
Three-Dimensional Computation of Reduction in
Radar Cross Section Using Plasma Shielding
Bhaskar Chaudhury and Shashank Chaturvedi
Abstract—We have performed three-dimensional (3-D) finite-
difference time-domain (FDTD) simulations for calculating
microwave scattering from metallic objects shielded by a plasma
shroud. Such simulations are of interest for plasma-based stealth
technology. The simulations yield a reasonable match with experimental
measurements. A physical interpretation has also been
provided for these results, in terms of the flow of electromagnetic
power. Such an analysis is only possible using the detailed
spatio-temporal evolution of electromagnetic fields that is provided
by the FDTD method. We find that apart from absorption,
the bending of waves toward regions of lower plasma density plays
an important role in determining the extent of backscatter. This
has major implications for plasma stealth applications, which have
heretofore assumed that plasma absorption is the main mechanism.
Also, bending could actually enhance radar scattering in
directions oblique to the incident direction.We have also identified
situations where 3-D simulations become necessary, and other
situations where a composite one–dimensional simulation may be
enough. This has practical relevance since it could help reduce the
demand for computational resources while modeling large objects
like aircraft.
Index Terms—Absorption, electromagnetic wave, finite-difference
time-domain (FDTD), plasma, radar cross section (RCS).
.....
Existing “low observableâ€
navy antenna looks classified since the authors only gave the brief extract
I posted in su30 thread to ieee, there is no further details from them.
the below proves it is a serious field of study...BS doesnt get published
in IEEE journals. but I suspect the real meat of the work is fully classified
anywhere it is being done.
other work:
3-D SIMULATIONS FOR RADAR CROSS-SECTION
REDUCTION USING PLASMA ABSORBERS
B. Chaudhury and S. Chaturvedi
Institute for Plasma Research, Bhat
Gandhinagar - 382428, Gujarat, INDIA.
Radar cross section (RCS) is the measure of a target's
ability to reflect radar signals in the direction of the radar
receiver. A collisional unmagnetized plasma, surrounding
the target, acts as a good absorber of electromagnetic
waves over a wide frequency range, reducing its RCS.
This has given rise to world wide interest in Plasma
Stealth technology. We have performed 3-D Finite
Difference Time Domain (FDTD) simulations for
calculating electro-magnetic wave scattering and
absorption due to plasma-shielded objects.
We have earlier validated our 3-D calculations against
experimental results for wave scattering from a plasmashielded
metallic plate [1,2]. Those simulations yielded a
reasonable match with experimental measurements. That
study also showed that bending of waves inside plasma
due to density gradients plays as important a role as
absorption. Those results have major implications for
plasma stealth applications, which have heretofore
assumed that plasma absorption is the main mechanism.
We have also compared two techniques for studying the
bending/refraction of electromagnetic energy flow
through a plasma with spatial density gradients. These are
the accurate FDTD method and the much faster, albeit
more approximate, ray-tracing method [4].
Our earlier work [1] focused on the near-field region. The
RCS refers to far-field measurements. In this paper, we
present actual far-field (RCS) results for objects with
generic shapes, such as flat plates, cylinders and spheres,
both with and without plasma shielding. In this paper, we
also report on the dependence of bistatic RCS on plasma
parameters, such as the peak electron density, the spatial
profile of density and the collision frequency. Finally, we
provide a physical interpretation for the results. Such an
interpretation is only possible using the detailed spatiotemporal
evolution of electromagnetic fields that is
provided by the FDTD method [3]. To our knowledge, this
is the first detailed three dimensional calculation of
plasma-based RCS reduction for real-life objects.
1. B. Chaudhury and S. Chaturvedi, IEEE Transactions on
Plasma Science, Vol. 33(6), 2005, pp. 2027- 2034.
2. K.R.Stadler, J. Appl.Phys.,Vol.72(11),1992, 5089-5094.
3. K.S.Kunz and R.J.Luebbers, The Finite-Difference Time
Domain Method for Electromagnetics, CRC Press (1993).
4. B.Chaudhury and S.Chaturvedi, `Reduction of RCS by
plasma shielding:Comparison of 3-D FDTD calculations
with ray tracing', ICOPS 2005, Monterey, California.
----------------
I have the full PDF form of this paper and not posting all the text here
because it contains lot of math formula and charts which cannot be
cut pasted. if anyone wants it email robust_bear at yahoo and will be
sent tomorrow night. those in univs or ieee accounts can obtain it
yourself.
IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 33, NO. 6, DECEMBER 2005
Three-Dimensional Computation of Reduction in
Radar Cross Section Using Plasma Shielding
Bhaskar Chaudhury and Shashank Chaturvedi
Abstract—We have performed three-dimensional (3-D) finite-
difference time-domain (FDTD) simulations for calculating
microwave scattering from metallic objects shielded by a plasma
shroud. Such simulations are of interest for plasma-based stealth
technology. The simulations yield a reasonable match with experimental
measurements. A physical interpretation has also been
provided for these results, in terms of the flow of electromagnetic
power. Such an analysis is only possible using the detailed
spatio-temporal evolution of electromagnetic fields that is provided
by the FDTD method. We find that apart from absorption,
the bending of waves toward regions of lower plasma density plays
an important role in determining the extent of backscatter. This
has major implications for plasma stealth applications, which have
heretofore assumed that plasma absorption is the main mechanism.
Also, bending could actually enhance radar scattering in
directions oblique to the incident direction.We have also identified
situations where 3-D simulations become necessary, and other
situations where a composite one–dimensional simulation may be
enough. This has practical relevance since it could help reduce the
demand for computational resources while modeling large objects
like aircraft.
Index Terms—Absorption, electromagnetic wave, finite-difference
time-domain (FDTD), plasma, radar cross section (RCS).
.....
Existing “low observableâ€
again just an abstract of classified work: Massa is well and truly into it
while denouncing the RU work as unviable for psyops...kinda like they
wailed about Alfa class SSN when they very well knew 688I was way better than public specs.
A Conceptual Study of
Stealth Plasma Antenna *
Weng Lock Kang, Mark Rader, and Igor Alexeff
UTK Plasma Science Laboratory
Department of Electrical and Computer Engineering
University of Tennessee
Knoxville, TN 37996-2100
The University of Tennessee Plasma Science Laboratory had
involved in the studies of cloaking application of plasma
discharge in the past. It had been shown that cloaking could be
achieved by modifying the frequency of the propagating r.f.
signal using a pulse plasma discharge. Two frequency shifting
mechanisms were studied, one by using the plasma a:; a
nonphysical plunger to upshift the frequency (I), the other by
the phase velocity increase to change the frequency of the
incoming radiation (2).
We are recently however involved in the conceptual study of
stealth plasma antenna. Stealth plasma antenna achieves its
cloaking property without depending on frequency shifting. It
depends instead on the behavior of an electromagnetic wave
propagating in the plasma medium.
We have actually demonstrated that it is feasible to constriict
an antenna out of a glass tube filled with low-pressure gas,
such as a fluorescent tube (3). When the gas is ionized, %we
have an efficient, highly directional receiving and transmitting
antenna. When the gas de-ionizes, the structure reverts tci a
simple structure of a glass tube, with negligible radar crosssection,
rendering it the stealth or cloaking property.
* Supported in part by AFOSR
1. I. Alexeff, F. Dyer, and Mark Rader, "Frequency
Modulation of Free Space R.F. Signal," IEEE Internatiorial
Conference on Plasma Science, ISBN 0-7803-0147-1 (199 I),
p.86
2. Mark Rader, "Frequency Modification of RF Signals Using
an Ionized Gas," Ph.D. dissertation, The University of
Tennessee, May 1991.
3. W.L. Kang, M. Rader, and I. Alexeff, "A Microwave Plasma
Closing Switch and Stealth Plasma Antenna," IEEIE
International Conference on Plasma Science, ISBN 0-7803-
2669-5 (1995), p.141.
Acknowledgments
This work was supported in part by AFOSR Grant F49620-
94-1-0054 and AFOSR AASERT Award F49620-93-1-0465
References
[l] W. Shen, J. E. Scharer, IV. T. Lam, B. G. Porter and K . L.
Kelly, "Properties of a VUV Laser Created Plasma Sheet
for a Microwave Reflector", Journal of Applied Physics.
October 1995.
while denouncing the RU work as unviable for psyops...kinda like they
wailed about Alfa class SSN when they very well knew 688I was way better than public specs.
A Conceptual Study of
Stealth Plasma Antenna *
Weng Lock Kang, Mark Rader, and Igor Alexeff
UTK Plasma Science Laboratory
Department of Electrical and Computer Engineering
University of Tennessee
Knoxville, TN 37996-2100
The University of Tennessee Plasma Science Laboratory had
involved in the studies of cloaking application of plasma
discharge in the past. It had been shown that cloaking could be
achieved by modifying the frequency of the propagating r.f.
signal using a pulse plasma discharge. Two frequency shifting
mechanisms were studied, one by using the plasma a:; a
nonphysical plunger to upshift the frequency (I), the other by
the phase velocity increase to change the frequency of the
incoming radiation (2).
We are recently however involved in the conceptual study of
stealth plasma antenna. Stealth plasma antenna achieves its
cloaking property without depending on frequency shifting. It
depends instead on the behavior of an electromagnetic wave
propagating in the plasma medium.
We have actually demonstrated that it is feasible to constriict
an antenna out of a glass tube filled with low-pressure gas,
such as a fluorescent tube (3). When the gas is ionized, %we
have an efficient, highly directional receiving and transmitting
antenna. When the gas de-ionizes, the structure reverts tci a
simple structure of a glass tube, with negligible radar crosssection,
rendering it the stealth or cloaking property.
* Supported in part by AFOSR
1. I. Alexeff, F. Dyer, and Mark Rader, "Frequency
Modulation of Free Space R.F. Signal," IEEE Internatiorial
Conference on Plasma Science, ISBN 0-7803-0147-1 (199 I),
p.86
2. Mark Rader, "Frequency Modification of RF Signals Using
an Ionized Gas," Ph.D. dissertation, The University of
Tennessee, May 1991.
3. W.L. Kang, M. Rader, and I. Alexeff, "A Microwave Plasma
Closing Switch and Stealth Plasma Antenna," IEEIE
International Conference on Plasma Science, ISBN 0-7803-
2669-5 (1995), p.141.
Acknowledgments
This work was supported in part by AFOSR Grant F49620-
94-1-0054 and AFOSR AASERT Award F49620-93-1-0465
References
[l] W. Shen, J. E. Scharer, IV. T. Lam, B. G. Porter and K . L.
Kelly, "Properties of a VUV Laser Created Plasma Sheet
for a Microwave Reflector", Journal of Applied Physics.
October 1995.
Bulgarians as usual....heavily into math work during ussr days.
Digital Avionics Systems Conference, 2004. DASC 04. The 23rd
Volume 1, 24-28 Oct. 2004 Page(s):
COMPLEMENTARY CODE ISAR TECHNIQUE FOR STEALTH TARGET
DETECTION AND IDENTIFICATION
Andon D. Lazarov, Burgas Free Universiv, Burgas, Bulgaria
Chavdar N. Minchev, National Military Universiv, AADCISD, Shumen. Bulgaria
Abstract
In this paper an original ISAR technique for
stealth target detection and image reconstruction is
analyzed. Geometry of 2-D ISAR scenario and
analytical expressions for trajectory target
determination are suggested. A model of the
complementary phase code ISAR signal reflected
by environment in the presence of the stealth target
is created. Autofocusing procedure using first point
with the lower intensity is applied. Correlation
range compression and FFT azimuth compression
image reconstruction is performed. To verify the
correctness of the model and ability of the ISAR
technique for stealth target detection and image
reconstruction numerical experiment is
accomplished.
Introduction
One of the most prospective applications of
ISAR technique seems to he detection and
identification of targets built by “stealthâ€
Digital Avionics Systems Conference, 2004. DASC 04. The 23rd
Volume 1, 24-28 Oct. 2004 Page(s):
COMPLEMENTARY CODE ISAR TECHNIQUE FOR STEALTH TARGET
DETECTION AND IDENTIFICATION
Andon D. Lazarov, Burgas Free Universiv, Burgas, Bulgaria
Chavdar N. Minchev, National Military Universiv, AADCISD, Shumen. Bulgaria
Abstract
In this paper an original ISAR technique for
stealth target detection and image reconstruction is
analyzed. Geometry of 2-D ISAR scenario and
analytical expressions for trajectory target
determination are suggested. A model of the
complementary phase code ISAR signal reflected
by environment in the presence of the stealth target
is created. Autofocusing procedure using first point
with the lower intensity is applied. Correlation
range compression and FFT azimuth compression
image reconstruction is performed. To verify the
correctness of the model and ability of the ISAR
technique for stealth target detection and image
reconstruction numerical experiment is
accomplished.
Introduction
One of the most prospective applications of
ISAR technique seems to he detection and
identification of targets built by “stealthâ€
This paper has diagrams and charts of how to deal with a F117A with
SAMs....so helpful of Serbia to provide one sample
Proceedings of ICSP '98
A Preliminary Research into the Netted Radar Seekers
for Anti-stealth Aircraft
Jian Jinlei Ren Hongbin Gao Fuli Dang Huaisuo
The Air Force Institute of Missile, Sanyuan, Shaanxi, 713800, China
Abstract: The anti-stealth ofthe radar seeker is
U dgjcrtlt problem in the present air-defense missile
area. AJer studying in depth and using the anti-stealth
iechnology of ground radar for reference, we originally
present an anti-stealth technology with the netted
active radar seekers borne double missiles. This is
more feasible and pragmatic anti-stealth technology of
radar seeker in the near future.
Introduction - ~
Some of the modern operational planes, tactical
ballistic missile (TBM) and aerodynamic missile are
stealthy or quasi-stealthy. In addition, the coming all
targets will be stealthy, quasi-stealthy even stealthy
in all directions. The anti-radar stealth and antiinfrared
stealth of aircraft (adding electromagnetic
jamming and anti-radiation missile -ARM) will
scriously threat the air-defense missile weapon
system. This requires that the modern and coming
airdefense missile weapon system should have the
capability of the anti-stealth target.
One of main threats of the stealth target against
the air-defense missile is to make the acceptance
range of the radar seeker become small. It leads
shortness of shifting time from midcourse guidance
to terminal guidance. The initial error of the terminal
guidance can not be removed within so short time so
that the guidance accuracy is lowered, i.e. singleshot
kill probability is reduced. To reduce or remove
the effect of stealth target on the killing zone and the
guiding accuracy, it is necessary to take some antistealth
steps for the seeker. Because seeker is the
kind of missile-borne radar whose weight and size
are strictly limited and acceptance range is shorter
(only 5-20km), some anti-stealth technology and
steps used in ground radar are difficult to realize in
the missile-borne radar. This makes the anti-stealth
of the radar seeker become a difficult problem in the
present air-defense missile area. Even so, the recent
research achievements on anti-radar-stealth lay the
foundations for the anti-stealth technology of the
netted radar seeker.
Basis idea of antcsfealth technology of the
netted radar seekets borne double tnides
The key to the anti-radar stealth aircraft lies in
reducing its radar cross section (RCS). The antiradar
stealth is mainly realized by designing a
special configuration, painting electromagnetic-wave
absorbing material and repressing electromagnetic
radiation technology and so on. However, the present
stealth aircrafi are not stealth in all direction and are
stealth only in its nose direction to reduce the
acceptance range of head-on shot (frequently used in
the air-defense missile). Generally, RSC in the nose
(k45' azimuth angle and f30° pitch angle) is
decreased by two orders of magnitude so as to form
a stealth effect. And RCS in other directions (such as
its back, flank, and belly) is not reduced or reduced
less, even increased in some directions. For example,
it is reported in reference [2] that F-117A's RCS
within the range of +30° in front is reduced by
28dB to 0.01 m2 and in its back, flank, belly
directions only by less than 8dB to 1 m2 above and in
other directions by less than 18dB to 0.1 m2 above.
Thus it can be seen that the stealth technology
results that the reduction in RCS of stealth target is
not same in all directions. According to this weak
point, the seekers of double missiles of continuous
firing can be netted to observe target in
directions. Then data of two seekers are exch
by using the data communication system.
exchanged data are fused in each seeker to get
continuos steady tracking €or the target and to obtain
the greater acceptance range and the more accurate
parameters of target motion
................
The system with the netted seekers borne
week point that the stealth targets have stealth effect double missiles has the following advantages as
only within a limited angle. If the detecting angles of compared to single seeker system.
two seekers are different in relation to a same target, (1) The covered track zone of netted system is
Fig.3 Compensation of two netted seekers
1567
larger than one of single seeker system.
(2) Track starts early.
(3) Track has continuity.
(4) The data rate is high; the accuracy of track
parameter estimation is also high.
( 5 ) The detecting probability within overlaying
zone of two seekers is large.
(6) The anti-jamming capability is great.
(7) It is beneficial to antagonism against ARM.
(8) It is beneficial to detecting stealth target.
The following crucial technology and difficult
problems need to be solved when the netted seeker is
used for anti-stealth
( I ) Data-firsion technology
The netted anti-stealth need to apply point set
data fusion, which includes correlation analysis and
data fusion algorithm. At present, we need to make a
hrthcr and thorough research into the data fusion
technology and make the existing technology (such
as fusion. filter, transform, correlation and SO on)
engineering.
(2) Communication technology and hme base
problem
It includes information transmission and share
bctween two seekers and the high-capacity real-time
conimunication technology. At the same time, some
technology (such as communication anti-jamming
technology. enciphering communication technology
and electromagnetic compatible technology) should
be used in raising information transmission quality.
(3) Accurate location of seekers
The locating error of seeker will be directly fed
to the information processing system to generate a
system error. It will affect the seeker’s tracking
accuracy. This is of great importance to the radar
seeker in airdefense missile.
(4) Trackrng accuracy of target
Because the locating error of the seeker, time
synchronization error and signal delay may make
target measuring error become more large than
single seeker system, the tracking accuracy of target
appears very important when the seekers are netted.
This needs to be solved by using filter technology
and algorithm technology.
SAMs....so helpful of Serbia to provide one sample
Proceedings of ICSP '98
A Preliminary Research into the Netted Radar Seekers
for Anti-stealth Aircraft
Jian Jinlei Ren Hongbin Gao Fuli Dang Huaisuo
The Air Force Institute of Missile, Sanyuan, Shaanxi, 713800, China
Abstract: The anti-stealth ofthe radar seeker is
U dgjcrtlt problem in the present air-defense missile
area. AJer studying in depth and using the anti-stealth
iechnology of ground radar for reference, we originally
present an anti-stealth technology with the netted
active radar seekers borne double missiles. This is
more feasible and pragmatic anti-stealth technology of
radar seeker in the near future.
Introduction - ~
Some of the modern operational planes, tactical
ballistic missile (TBM) and aerodynamic missile are
stealthy or quasi-stealthy. In addition, the coming all
targets will be stealthy, quasi-stealthy even stealthy
in all directions. The anti-radar stealth and antiinfrared
stealth of aircraft (adding electromagnetic
jamming and anti-radiation missile -ARM) will
scriously threat the air-defense missile weapon
system. This requires that the modern and coming
airdefense missile weapon system should have the
capability of the anti-stealth target.
One of main threats of the stealth target against
the air-defense missile is to make the acceptance
range of the radar seeker become small. It leads
shortness of shifting time from midcourse guidance
to terminal guidance. The initial error of the terminal
guidance can not be removed within so short time so
that the guidance accuracy is lowered, i.e. singleshot
kill probability is reduced. To reduce or remove
the effect of stealth target on the killing zone and the
guiding accuracy, it is necessary to take some antistealth
steps for the seeker. Because seeker is the
kind of missile-borne radar whose weight and size
are strictly limited and acceptance range is shorter
(only 5-20km), some anti-stealth technology and
steps used in ground radar are difficult to realize in
the missile-borne radar. This makes the anti-stealth
of the radar seeker become a difficult problem in the
present air-defense missile area. Even so, the recent
research achievements on anti-radar-stealth lay the
foundations for the anti-stealth technology of the
netted radar seeker.
Basis idea of antcsfealth technology of the
netted radar seekets borne double tnides
The key to the anti-radar stealth aircraft lies in
reducing its radar cross section (RCS). The antiradar
stealth is mainly realized by designing a
special configuration, painting electromagnetic-wave
absorbing material and repressing electromagnetic
radiation technology and so on. However, the present
stealth aircrafi are not stealth in all direction and are
stealth only in its nose direction to reduce the
acceptance range of head-on shot (frequently used in
the air-defense missile). Generally, RSC in the nose
(k45' azimuth angle and f30° pitch angle) is
decreased by two orders of magnitude so as to form
a stealth effect. And RCS in other directions (such as
its back, flank, and belly) is not reduced or reduced
less, even increased in some directions. For example,
it is reported in reference [2] that F-117A's RCS
within the range of +30° in front is reduced by
28dB to 0.01 m2 and in its back, flank, belly
directions only by less than 8dB to 1 m2 above and in
other directions by less than 18dB to 0.1 m2 above.
Thus it can be seen that the stealth technology
results that the reduction in RCS of stealth target is
not same in all directions. According to this weak
point, the seekers of double missiles of continuous
firing can be netted to observe target in
directions. Then data of two seekers are exch
by using the data communication system.
exchanged data are fused in each seeker to get
continuos steady tracking €or the target and to obtain
the greater acceptance range and the more accurate
parameters of target motion
................
The system with the netted seekers borne
week point that the stealth targets have stealth effect double missiles has the following advantages as
only within a limited angle. If the detecting angles of compared to single seeker system.
two seekers are different in relation to a same target, (1) The covered track zone of netted system is
Fig.3 Compensation of two netted seekers
1567
larger than one of single seeker system.
(2) Track starts early.
(3) Track has continuity.
(4) The data rate is high; the accuracy of track
parameter estimation is also high.
( 5 ) The detecting probability within overlaying
zone of two seekers is large.
(6) The anti-jamming capability is great.
(7) It is beneficial to antagonism against ARM.
(8) It is beneficial to detecting stealth target.
The following crucial technology and difficult
problems need to be solved when the netted seeker is
used for anti-stealth
( I ) Data-firsion technology
The netted anti-stealth need to apply point set
data fusion, which includes correlation analysis and
data fusion algorithm. At present, we need to make a
hrthcr and thorough research into the data fusion
technology and make the existing technology (such
as fusion. filter, transform, correlation and SO on)
engineering.
(2) Communication technology and hme base
problem
It includes information transmission and share
bctween two seekers and the high-capacity real-time
conimunication technology. At the same time, some
technology (such as communication anti-jamming
technology. enciphering communication technology
and electromagnetic compatible technology) should
be used in raising information transmission quality.
(3) Accurate location of seekers
The locating error of seeker will be directly fed
to the information processing system to generate a
system error. It will affect the seeker’s tracking
accuracy. This is of great importance to the radar
seeker in airdefense missile.
(4) Trackrng accuracy of target
Because the locating error of the seeker, time
synchronization error and signal delay may make
target measuring error become more large than
single seeker system, the tracking accuracy of target
appears very important when the seekers are netted.
This needs to be solved by using filter technology
and algorithm technology.
Apologies if already posted
Irregular warfare: The war of the future (Economist)
Irregular warfare: The war of the future (Economist)
Irregular warfare may keep Western armies busy for decades. They will have to adapt if they are to overcome the odds that history suggests they are up against
Modern Western armies cannot, as the Romans did, make a wasteland and call it peace. Modern wars are complex affairs conducted “among the peopleâ€
International News
Russian Stealth Bomber, Fighter, MaRV
Claims new RAAF warplane outmatched
France backs off Saudi fighter sale
Libya's Col. Gadhafi to visit France - Another chance for Rafale?
More Radar P-3s
Korea's commerce, industry minister pitches T-50 jet to UAE
Is China Selling J-10s to Iran?
Syria was preparing itself for air force strike
CV-22 Osprey flies first search and recovery mission
Israel confirms interest in Bell Boeing V-22 tiltrotor
Reaper conducts first strike
High stakes: contestants jostle for BAMS UAV award
US Air Force requests funding for 20 more F-22 fighters
But No extra F-22s, C-17s for USAF in 2009
Airbus A400M Delay Poses Problem for German Army
EADS to give nod for replacement Barracuda UCAV
Russian Stealth Bomber, Fighter, MaRV
Claims new RAAF warplane outmatched
France backs off Saudi fighter sale
Libya's Col. Gadhafi to visit France - Another chance for Rafale?
More Radar P-3s
Korea's commerce, industry minister pitches T-50 jet to UAE
Is China Selling J-10s to Iran?
Syria was preparing itself for air force strike
CV-22 Osprey flies first search and recovery mission
Israel confirms interest in Bell Boeing V-22 tiltrotor
Reaper conducts first strike
High stakes: contestants jostle for BAMS UAV award
US Air Force requests funding for 20 more F-22 fighters
But No extra F-22s, C-17s for USAF in 2009
Airbus A400M Delay Poses Problem for German Army
EADS to give nod for replacement Barracuda UCAV
Tsar Bomba (Царь-бомба, literally "Emperor Bomb") is the Western name for the RDS-220, which was the largest, most powerful nuclear weapon ever detonated. Developed by the Soviet Union, the bomb had a yield of about 50 megatons of TNT and it was codenamed Ivan by its developers.
The bomb was tested on October 30, 1961, in Novaya Zemlya, an archipelago in the Arctic Sea. The device was scaled down from its original design of 100 megatons to reduce the resulting nuclear fallout.
The Tsar bomba never entered service. It was just a demonstration of Soviet scientific, technical and military power of that time. One real Tsar bomba and one mockup were constructed. The real bomb was tested, the mockup was stored in the Russian Nuclear Weapons Museum in the Russian town of Sarov.
krishnan, please always post along with a source.
Korean Defense Product Exports Soar This Year
(Source: Korea Overseas Information Service; issued Oct. 29, 2007)
Korea's exports of defense products have quadrupled this year compared to 2006, boosted by sales of its brand-new basic trainer jet and battle tank, the Defense Acquisition Program Administration (DAPA) said Monday (Oct. 29).
In a report to a parliamentary audit of the Defense Ministry, the agency said the country's defense exports totaled $1.9 billion as of September, a 430-percent increase from $260 million last year.
The increase is attributable to contracts with Turkey on the sales of KT-1 Woongbi trainer jets and XK-2 tanks, as well as deals with the Philippines on K-3 rifles, ammunition and military vehicles.
"It is a feat of the Korean defense industry which has constantly made efforts on research and development to achieve self-reliant national defense," said Rep. Lee Sang-deuk of the main opposition Grand National Party.
Korean Defense Product Exports Soar This Year
(Source: Korea Overseas Information Service; issued Oct. 29, 2007)
Korea's exports of defense products have quadrupled this year compared to 2006, boosted by sales of its brand-new basic trainer jet and battle tank, the Defense Acquisition Program Administration (DAPA) said Monday (Oct. 29).
In a report to a parliamentary audit of the Defense Ministry, the agency said the country's defense exports totaled $1.9 billion as of September, a 430-percent increase from $260 million last year.
The increase is attributable to contracts with Turkey on the sales of KT-1 Woongbi trainer jets and XK-2 tanks, as well as deals with the Philippines on K-3 rifles, ammunition and military vehicles.
"It is a feat of the Korean defense industry which has constantly made efforts on research and development to achieve self-reliant national defense," said Rep. Lee Sang-deuk of the main opposition Grand National Party.
Lockheed celebrates milestone
Lockheed Martin officials will celebrate today the milestone delivery of its 20,000th HELLFIRE missile at the Missiles and Fire Control facility in Troy.
The Hellfire missile is a modular missile system that has been used widely by U.S. armed forces as an anti-tank weapon fired from helicopters.
The HELLFIRE is assembled, integrated and tested at the Lockheed Martin's facility in Troy.
Lockheed Martin has had the development contract for the HELLFIRE missile since 1990, and the first missile was delivered five years later. At peak production, the Troy facility produced 600 missiles each month. Most recently, the Troy plant was able to meet an urgent request from the Army for 36 HELLFIRE missiles in just a few days, the company reported this week.
Lockheed Martin officials will celebrate today the milestone delivery of its 20,000th HELLFIRE missile at the Missiles and Fire Control facility in Troy.
The Hellfire missile is a modular missile system that has been used widely by U.S. armed forces as an anti-tank weapon fired from helicopters.
The HELLFIRE is assembled, integrated and tested at the Lockheed Martin's facility in Troy.
Lockheed Martin has had the development contract for the HELLFIRE missile since 1990, and the first missile was delivered five years later. At peak production, the Troy facility produced 600 missiles each month. Most recently, the Troy plant was able to meet an urgent request from the Army for 36 HELLFIRE missiles in just a few days, the company reported this week.
Anti-ballistic missile 53T6 Gazelle Test mission Launch.
Can any one guess the speed of the interceptor
Can any one guess the speed of the interceptor
-
gopal.suri
- BRFite
- Posts: 191
- Joined: 26 May 2007 17:22
Thanks for putting it up Gopal.gopal.suri wrote:Astute first dive
Spies: The Secret Agents Who Changed the Course of History
A well written review!
US Navy’s LCS Class Latest Procurement Casualty[quote]On November 1, 2007, the Navy announced that it had canceled the fourth Littoral Combat Ship (LCS), one of what was to have been a 55-ship class of new, “brown waterâ€
Arms Procurement Decision Making
-Ravinder Pal Singh
a 315 page book freely available online for reading. should be quite useful, especially considering the MMRCA tender coming up.
-Ravinder Pal Singh
a 315 page book freely available online for reading. should be quite useful, especially considering the MMRCA tender coming up.
"This study is a comparative analysis of the arms procurement decision-making processes in five countries (India, China, Israel, Japan, South Korea & Thailand). It examines whether or not national arms procurement processes, even as they involve sensitive security issues and complex systems, can become more responsive to the broader objectives of security and public accountability. The country case studies are based to a large extent on original research papers written by experts from the respective national academic and defense procurement communities."
http://www.boston.com/news/nation/washi ... _of_f_15s/
Air Force grounds entire fleet of F-15s
Air Force grounds entire fleet of F-15s
WASHINGTON - The US Air Force has grounded its entire fleet of F-15s, the service's premier fighter aircraft, after one of the planes disintegrated over eastern Missouri during a training mission, raising the possibility of a fatal flaw in the aging fighters' fuselage that could keep it out of the skies for months.
more stories like this
General T. Michael "Buzz" Moseley, the Air Force chief of staff, ordered the grounding Saturday after initial reports showed that the Missouri Air National Guard fighter plane broke apart Friday in midair during a simulated dogfight.
Although the 688 F-15s in the Air Force's arsenal gradually are being replaced by a new generation of aircraft - the F-22 - they remain the nation's most sophisticated front-line fighters. US officials said the F-15s are used heavily for protecting the continental United States from terrorist attack, as well as for combat missions in Iraq and Afghanistan.
Lieutenant General Gary
I don't understand Chinese, but it does look very much like the semi-planing monohull LCS design of Lockheed Martin.
Yup, it is the same. Check out the same pic in Wiki link:
http://en.wikipedia.org/wiki/USS_Freedom_%28LCS-1%29
Yup, it is the same. Check out the same pic in Wiki link:
http://en.wikipedia.org/wiki/USS_Freedom_%28LCS-1%29
Ayatollah Blog has a photo of latest Chinese SSBN taken in port by an anonymous photographer
http://www.fas.org/blog/ssp/images/JinSSBNx.jpg
http://www.fas.org/blog/ssp/images/JinSSBNx.jpg
Is it like the russian double hull designGerard wrote:Ayatollah Blog has a photo of latest Chinese SSBN taken in port by an anonymous photographer
http://www.fas.org/blog/ssp/images/JinSSBNx.jpg
http://www.guardian.co.uk/worldlatest/s ... 08,00.html
6 Workers Injured in Blast on Navy Ship
6 Workers Injured in Blast on Navy Ship
The uninvited guest: Chinese sub pops up in middle of U.S. Navy exercise, leaving military chiefs red-faced
By MATTHEW HICKLEY - More by this author » Last updated at 00:13am on 10th November 2007
When the U.S. Navy deploys a battle fleet on exercises, it takes the security of its aircraft carriers very seriously indeed.
At least a dozen warships provide a physical guard while the technical wizardry of the world's only military superpower offers an invisible shield to detect and deter any intruders.
That is the theory. Or, rather, was the theory.
American military chiefs have been left dumbstruck by an undetected Chinese submarine popping up at the heart of a recent Pacific exercise and close to the vast U.S.S. Kitty Hawk - a 1,000ft supercarrier with 4,500 personnel on board.
By the time it surfaced the 160ft Song Class diesel-electric attack submarine is understood to have sailed within viable range for launching torpedoes or missiles at the carrier.
According to senior Nato officials the incident caused consternation in the U.S. Navy.
The Americans had no idea China's fast-growing submarine fleet had reached such a level of sophistication, or that it posed such a threat.
One Nato figure said the effect was "as big a shock as the Russians launching Sputnik" - a reference to the Soviet Union's first orbiting satellite in 1957 which marked the start of the space age.
The incident, which took place in the ocean between southern Japan and Taiwan, is a major embarrassment for the Pentagon.
More at:
http://www.dailymail.co.uk/pages/live/a ... ge_id=1811
By MATTHEW HICKLEY - More by this author » Last updated at 00:13am on 10th November 2007
When the U.S. Navy deploys a battle fleet on exercises, it takes the security of its aircraft carriers very seriously indeed.
At least a dozen warships provide a physical guard while the technical wizardry of the world's only military superpower offers an invisible shield to detect and deter any intruders.
That is the theory. Or, rather, was the theory.
American military chiefs have been left dumbstruck by an undetected Chinese submarine popping up at the heart of a recent Pacific exercise and close to the vast U.S.S. Kitty Hawk - a 1,000ft supercarrier with 4,500 personnel on board.
By the time it surfaced the 160ft Song Class diesel-electric attack submarine is understood to have sailed within viable range for launching torpedoes or missiles at the carrier.
According to senior Nato officials the incident caused consternation in the U.S. Navy.
The Americans had no idea China's fast-growing submarine fleet had reached such a level of sophistication, or that it posed such a threat.
One Nato figure said the effect was "as big a shock as the Russians launching Sputnik" - a reference to the Soviet Union's first orbiting satellite in 1957 which marked the start of the space age.
The incident, which took place in the ocean between southern Japan and Taiwan, is a major embarrassment for the Pentagon.
More at:
http://www.dailymail.co.uk/pages/live/a ... ge_id=1811
Interesting to note that the chinese sub incident actually happened in late october of last year
Times of India
Washington Post
Times of India
Washington Post
http://www.defencetalk.com/news/publish ... 014140.phpNew F-35 Combat Helmet is a Vision of the Future
It will even superimpose infra-red imagery onto the visor which allows the pilot to ‘look through’ the cockpit floor at night and see the world below.