LCA News and Discussions
Re: LCA News and Discussions
Nice.. that should give enough O2 to carry out mission and return to base.(should be monitored by the health monitoring system as well).. you will see the power of requiring distributed computing now. /LCA being AMCA test bed
Re: LCA News and Discussions
There have been more than 2 separation tests. AFAIK, Goa sea-level trials had a bunch of R-73 releases at various flight profiles. I don't know the exact number though.Aditya_V wrote:There has not been much news on LCA's A To A tests apart from 1 or 2 r-73 firings for separation tests. So more news on AtoA will be welcome.
Combo Meal! A huge post for all Tarmak007 readers! Twin Treat: BrahMos Block-III+ test-fired from Chandipur; Tejas fires R-73 again in Goa, chaff & flare firing too tested
Re: LCA News and Discussions
I think you guys might like my article on the Gast gun. While the original concept dates back to World War I, it has an interesting connection with the LCA's autocannon.
Re: LCA News and Discussions
Kaveri flops, LCA-Tejas to fly on US engines
The dream of fitting Kaveri engine being developed indigenously into the home-grown Light Combat Aircraft LCA-Tejas appears to be as good as over.
"Kaveri engine as such will never come into LCA", P S Subramanyam, Director of Aeronautical Development Agency (ADA), a DRDO lab, which is the nodal agency for the design and development of LCA with HAL as the principal partner, told PTI here.
Noting that LCA-Mark 1 and Mark 2 will have engines from GE, he, however, said the LCA would support Kaveri engine's flight tests and demonstrations and certification.
"As and when there is support required by the Kaveri engine, LCA will give support of its flying test facilities", Subramanyam said. He expected flying tests of Kaveri engine to lead to its fitting into unmanned air systems.
Subramanyam said Kaveri engine-fitted LCA would not go into the Services. "In the production aircraft (LCA) going into the Services, Kaveri engine will not be there". Kaveri engine, originally intended to power the LCA, was taken up for development by Bangalore-based Gas Turbine Research Establishment (GTRE) about two-and-half-decades ago but the project has been dogged by delays, with the DRDO lab not being fully able to overcome technical challenges and development snags............
Re: LCA News and Discussions
Flight test update
From
LCA-Tejas has completed 1985 Test Flights Successfully. (23-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-94,LSP4-56,LSP5-118,LSP7-15,NP1-4)
to
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
Numbers are off by 4 it should be 1993
From
LCA-Tejas has completed 1985 Test Flights Successfully. (23-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-94,LSP4-56,LSP5-118,LSP7-15,NP1-4)
to
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
Numbers are off by 4 it should be 1993
Re: LCA News and Discussions
Astra BVR to be Integrated with Tejas aircraft by year end
Back from successful development trails of Astra Missile last month , Sources close to idrw.org have informed that Astra Bvraam will be integrated with Tejas aircraft by year end , but first test firing of the missile from an aircraft will likely take place in mid of this year from Sukhoi Su 30MKI .
The maximum range of Astra is 80 km in head-on chase and 20 km in tail chase. The missile could be launched from different altitudes – it can cover 80 km when launched from an altitude of 15 km, 44 km when fired from an altitude of eight km and 21 km when the altitude is sea-level . The missile can reportedly undertake 40 g turns close to sea level.
First test was carried out 10 years ago in 2003 but missile was more of a Technology Demonstrator then and many of the Technology was yet to be developed . missile has lost lot of weight and new missile sensor had to be developed . Initially missile range was around 40km in head-on chase but advancement in missile technology over the years and development of the missile enabled it to achieve 80 km in head-on chase , Missile will find its way into Sukhoi Su-30MKI first and later in Tejas MK-1/MK-2, first test firing from Tejas might take place next year after series of in flight testings are carried out of the missile on-board aircraft.
Astra will also will be integrated with Mirage-2000 and Mig-29 in near future after missile hits production line most likely in 2015 . DRDO is also planning of more advance variant of Astra MK-2 with 110-120 km range in near future .
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Re: LCA News and Discussions
The commercial airliners fly at 40K altitude with no oxygen generators. They just have pressurized cabins. The fighters also have the same pressurized cabin. So, why a regular flight need any oxygen supply? Also, Why pilots breath pure oxygen? I couldn't find answers in a brief search.
Also, during the old space race days, the russians were breathing regular sea level air and americans were breathing pressurized oxygen. This caused some problem for the first apollo-soyuz docking. Then there was this fire accident of Apollo 1 because of pressurized oxygen.
So, does the russian planes serve air or oxygen? Just thinking!
Also, during the old space race days, the russians were breathing regular sea level air and americans were breathing pressurized oxygen. This caused some problem for the first apollo-soyuz docking. Then there was this fire accident of Apollo 1 because of pressurized oxygen.
So, does the russian planes serve air or oxygen? Just thinking!
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Re: LCA News and Discussions
The root of your puzzlement lies in the bolded part of the quote. The designer of a fighter cockpit has to cater to the possibility of an explosive decompression on being shot at. Therefore the fighter cockpits are not as highly pressurized as commercial plane cabins are. Additionally, the fighter crew need more oxygen than a passenger in a commercial airline; they are far more active physically and mentally. Thus, a fighter aircrew would need oxygen and a normal air passenger wouldnot.Dileep wrote:The commercial airliners fly at 40K altitude with no oxygen generators. They just have pressurized cabins. The fighters also have the same pressurized cabin. So, why a regular flight need any oxygen supply? Also, Why pilots breath pure oxygen? I couldn't find answers in a brief search.
Re: LCA News and Discussions
Saar, just taking a stab with out any thing to back me up. You don't do 9G maneuvers in a commercial airliner. The risk of blackout is more in a dogfight without enough oxygen and may be pressurized cabin can't keep up with demand?! Thus need for pure O2.Dileep wrote:The commercial airliners fly at 40K altitude with no oxygen generators. They just have pressurized cabins. The fighters also have the same pressurized cabin. So, why a regular flight need any oxygen supply? Also, Why pilots breath pure oxygen? I couldn't find answers in a brief search.
Also, during the old space race days, the russians were breathing regular sea level air and americans were breathing pressurized oxygen. This caused some problem for the first apollo-soyuz docking. Then there was this fire accident of Apollo 1 because of pressurized oxygen.
So, does the russian planes serve air or oxygen? Just thinking!
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Re: LCA News and Discussions
Abhibhushan wrote:The root of your puzzlement lies in the bolded part of the quote. The designer of a fighter cockpit has to cater to the possibility of an explosive decompression on being shot at. Therefore the fighter cockpits are not as highly pressurized as commercial plane cabins are. Additionally, the fighter crew need more oxygen than a passenger in a commercial airline; they are far more active physically and mentally. Thus, a fighter aircrew would need oxygen and a normal air passenger wouldnot.Dileep wrote:The commercial airliners fly at 40K altitude with no oxygen generators. They just have pressurized cabins. The fighters also have the same pressurized cabin. So, why a regular flight need any oxygen supply? Also, Why pilots breath pure oxygen? I couldn't find answers in a brief search.
What is the composition of air in these bottles. Is it different from what we here on bhoomi enjoy?
BTW thanks for other things.
Re: LCA News and Discussions
That is 3 and 4 flights in a day for LSP7 and LSP5 respectively.suryag wrote:Flight test update
From
LCA-Tejas has completed 1985 Test Flights Successfully. (23-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-94,LSP4-56,LSP5-118,LSP7-15,NP1-4)
to
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
Numbers are off by 4 it should be 1993
Re: LCA News and Discussions
http://en.wikipedia.org/wiki/Cabin_pressurizationAbhibhushan wrote:Therefore the fighter cockpits are not as highly pressurized as commercial plane cabins are.
this wiki is good.
Re: LCA News and Discussions
Flight test update
From
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
to
LCA-Tejas has completed 1995 Test Flights Successfully. (29-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-239,PV5-36,LSP3-95,LSP4-57,LSP5-122,LSP7-18,NP1-4)
They have corrected the numbers, LSP2 and 4 have started flying again after a long time
From
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
to
LCA-Tejas has completed 1995 Test Flights Successfully. (29-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-239,PV5-36,LSP3-95,LSP4-57,LSP5-122,LSP7-18,NP1-4)
They have corrected the numbers, LSP2 and 4 have started flying again after a long time
Re: LCA News and Discussions
dont get it, both have flown once, that is 2 flight test, but there should be 6 flight tests as per the record
1989 - 1995
1989 - 1995
Re: LCA News and Discussions
25-jan-13 flight data has a totaling error by 4.krishnan wrote:dont get it, both have flown once, that is 2 flight test, but there should be 6 flight tests as per the record
1989 - 1995
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Re: LCA News and Discussions
We are getting tantalizingly close to the 2000 #suryag wrote:Flight test update
From
LCA-Tejas has completed 1989 Test Flights Successfully. (24-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-238,PV5-36,LSP3-95,LSP4-56,LSP5-122,LSP7-18,NP1-4)
to
LCA-Tejas has completed 1995 Test Flights Successfully. (29-Jan-2013).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-348,LSP1-74,LSP2-239,PV5-36,LSP3-95,LSP4-57,LSP5-122,LSP7-18,NP1-4)
They have corrected the numbers, LSP2 and 4 have started flying again after a long time
Re: LCA News and Discussions
Does the same hold true for a very high altitude aircraft like Mig-25 ? Or instead of the pressurizing the cabin, do the pilots wear pressurized suits ?Abhibhushan wrote:The root of your puzzlement lies in the bolded part of the quote. The designer of a fighter cockpit has to cater to the possibility of an explosive decompression on being shot at. Therefore the fighter cockpits are not as highly pressurized as commercial plane cabins are. Additionally, the fighter crew need more oxygen than a passenger in a commercial airline; they are far more active physically and mentally. Thus, a fighter aircrew would need oxygen and a normal air passenger wouldnot.Dileep wrote:The commercial airliners fly at 40K altitude with no oxygen generators. They just have pressurized cabins. The fighters also have the same pressurized cabin. So, why a regular flight need any oxygen supply? Also, Why pilots breath pure oxygen? I couldn't find answers in a brief search.
Re: LCA News and Discussions
I am getting this feeling that 2000th flight will be by LSP-8Shrinivasan wrote:
They have corrected the numbers, LSP2 and 4 have started flying again after a long time We are getting tantalizingly close to the 2000 #
Re: LCA News and Discussions
Not to rain on the parade but IIRC only Engine ground run was reported on LSP-8 a few days ago. It still needs to progress through low speed and high speed taxi trials before first flight. It should be here in Feb, but may be not the 2000th flight. There were some reports of weight savings from new components and final tweaks to get to production configuration. Would be good to see what has been achieved.
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Re: LCA News and Discussions
Hmm. Roar of turbojet engines.. sounds like the GE404, and continuous, consistent with aircraft maneuvering. Sounds like Tejas is up in the air and practising for AI show maybe ?
Re: LCA News and Discussions
first one landed few mts back and now the second one is up in the air
Re: LCA News and Discussions
From this link, Tejas can carry on 2-R73 and 2 Derby's. SHould not there flexiblity and multiple racks to carry 4 R-73/Python V, 2 R-73/ Python V or 4 derby, 2 R-73/ Python V etc. or 4 R-73 and 4- Derby (jingo wishes derby replaced by Astra).
Re: LCA News and Discussions
boils down to have dual derby/astra pylons on the 2nd pylons out from fuselage.
and as yet we continue to ignore this worldwide trend to dual, triple(assm, brimstone)
looks how a ordinary harrier has been loaded to the gunwales with ordnance here
http://2.bp.blogspot.com/-0F6L0hjtm5s/T ... mstone.jpg
its packing 2 cannons, 2 aim9, 2 drop tanks and 12 brimstone
and as yet we continue to ignore this worldwide trend to dual, triple(assm, brimstone)
looks how a ordinary harrier has been loaded to the gunwales with ordnance here
http://2.bp.blogspot.com/-0F6L0hjtm5s/T ... mstone.jpg
its packing 2 cannons, 2 aim9, 2 drop tanks and 12 brimstone
Re: LCA News and Discussions
Multi racks increases drag and RCS, while the idea should be to reduce both. In interception role a single centerline fuel tank is enough for LCA, which leaves 6 x wingstations for 2 x R73 and 4 x Derby / Astra. More than enough for a fighter of this class, the problem only comes in A2G roles, when more fuel tanks have to be added. The only hope is, that the new fuel tanks of MK2 are big enough to free some hardpoints.Aditya_V wrote:From this link, Tejas can carry on 2-R73 and 2 Derby's. SHould not there flexiblity and multiple racks to carry 4 R-73/Python V, 2 R-73/ Python V or 4 derby, 2 R-73/ Python V etc. or 4 R-73 and 4- Derby (jingo wishes derby replaced by Astra).
Re: LCA News and Discussions
Thank you very much indranilroy ji for the link.indranilroy wrote:FromLCA 2013 calendar
Specially for this photograph. Tejas with my all time favorite fighter jet MiG-21
Re: LCA News and Discussions
what an awesome shot is that where the Tejas reveals the colors under her belly. Which fort is that on the ground.. superb!
Re: LCA News and Discussions
Listening to Capt. Malonkar's speech saddened me a bit that the NP1 has completed only 4 flights since that speech. Any news on the Navy program.....
Re: LCA News and Discussions
is the pic with mountains in back from Thoise?
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Re: LCA News and Discussions
The fort is Jaisalmer fort. One of the few living forts left in the world, you can even rent a hotel room there with a super awesome view.
Re: LCA News and Discussions
Just looking at the size of the Tejas when compared to the MiG-21, its amazing just how much of a capability jump it offers for nearly the same size in every aspect except for top speed, which is not that relevant anyway.
Re: LCA News and Discussions
That Tejas over Jaisalmer is superb.
Re: LCA News and Discussions
What about the external pods for EW, laser guidance pod etc. Either these needs to go internal or we need additional hard points (not additional loads) to make LCA truley multi/omni role bird. For Mk1 I think it is more than adequate but mk2 needs at least couple more hard points or twin missile launchers IMO.Sancho wrote:Multi racks increases drag and RCS, while the idea should be to reduce both. In interception role a single centerline fuel tank is enough for LCA, which leaves 6 x wingstations for 2 x R73 and 4 x Derby / Astra. More than enough for a fighter of this class, the problem only comes in A2G roles, when more fuel tanks have to be added. The only hope is, that the new fuel tanks of MK2 are big enough to free some hardpoints.Aditya_V wrote:^from tarmak link
[img= http://1.bp.blogspot.com/_5sP7XwykNSM/T ... /tejas.jpg[/img]
From this link, Tejas can carry on 2-R73 and 2 Derby's. SHould not there flexiblity and multiple racks to carry 4 R-73/Python V, 2 R-73/ Python V or 4 derby, 2 R-73/ Python V etc. or 4 R-73 and 4- Derby (jingo wishes derby replaced by Astra).
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Re: LCA News and Discussions
curiosity question : has the LCA been flight tested in rain and other bad weather environment (apart from hot / cold temp, like very cloudy conditions etc).
Re: LCA News and Discussions
Ghven that many LCA's have taken off from Bengaluru, my guess is this would have definitely happenned
Re: LCA News and Discussions
would bangalore, goa, sulur, leh fit your requirements? done.
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Re: LCA News and Discussions
yes , i am aware , my query was for flight during heavy rain, not seen a video of such flight , so the question, not doubting any capabilitySaiK wrote:would bangalore, goa, sulur, leh fit your requirements? done.
Re: LCA News and Discussions
it did night flights which is lesser in visibility condition but really a bad weather condition. there are night flight videos on tube.
i am not sure I have seen one video on bad weather flight.
i am not sure I have seen one video on bad weather flight.
Re: LCA News and Discussions
the biggest enemy is water reducing the thrusts.
civil aviation engine test have been done: available on the tube
http://www.youtube.com/watch?v=zXfQnQWeTzk
I guess it is hard to take video during bad weather, and I am sure the super teens have done extensively run through bad weather. no other place other than massan and russian land, we can get such data.
civil aviation engine test have been done: available on the tube
http://www.youtube.com/watch?v=zXfQnQWeTzk
I guess it is hard to take video during bad weather, and I am sure the super teens have done extensively run through bad weather. no other place other than massan and russian land, we can get such data.