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by Shalav
11 Mar 2017 03:50
Forum: Military Issues & History Forum
Topic: International Military Discussion
Replies: 2882
Views: 284485

Re: International Military Discussion

It had to happen sometime!

I like the also notice the non-slip coating on top of the ERA blocks. These attentions to minor detail contribute towards TFTA'ness and expen$$$e of their militarized hardware.
by Shalav
11 Mar 2017 03:28
Forum: Military Issues & History Forum
Topic: Small Arms Thread
Replies: 4133
Views: 666825

Re: Small Arms Thread

I don't begrudge the IA better arms. I only resent their (to me) cavalier attitude when actually making the selections. There seems to be no long term plan, no research. The IA has thousands if not 10 of thousands of people working in machine shops and armories. They have a budget of 10 of thousands...
by Shalav
11 Mar 2017 03:20
Forum: Military Issues & History Forum
Topic: Small Arms Thread
Replies: 4133
Views: 666825

Re: Small Arms Thread

Shouldn't the IA have thought about it BEFORE changing to 5.56? After all they are the professionals! They told us they needed the 5.56 because it had better terminal ballistics amongst other best of brochure characteristics. Heck right here in the forum everyone in favour of the change stated the s...
by Shalav
10 Mar 2017 12:31
Forum: Military Issues & History Forum
Topic: International Military Discussion
Replies: 2882
Views: 284485

Re: International Military Discussion

]Reactive armour being fitted on an M1A2.

Interestingly note the blast deflection semi-tubes to protect dismounted infantry.

https://youtu.be/MN7EAG-7Pj0?t=2m40s
by Shalav
10 Mar 2017 12:10
Forum: Military Issues & History Forum
Topic: Small Arms Thread
Replies: 4133
Views: 666825

Re: Small Arms Thread

I'm very sure that's not it. IIRC One of the reasons to justify the calibre change was the 7.62x51 had terminal ballistics which penetrated flesh but did not cause great wound damage before passing through the body. The justification for 5.56x45 was that it's terminal ballistics caused it to tumble ...
by Shalav
10 Mar 2017 11:04
Forum: Military Issues & History Forum
Topic: Small Arms Thread
Replies: 4133
Views: 666825

Re: Small Arms Thread

Too true. Someone may have seen the brochure for the Baretta ARX160 and sent that onwards and upwards to an RFP. Eventually the ARX 160 ended up as the ARX 200 for the 7.62x51 calibre. Presently the ARX 160 can only do 5.56x45 and 7.62x39 and ONLY with a complete Barrel + Bolt + Lower receiver chang...
by Shalav
10 Mar 2017 09:14
Forum: Military Issues & History Forum
Topic: Small Arms Thread
Replies: 4133
Views: 666825

Re: Small Arms Thread

So 20 years ago the IA decided they wanted to retire their 7.62 x 51 FN FAL's (Ishapore 1A1) in favour of the 5.56 x 45 NATO. Some of the reasons given among many IIRC was that they wanted to reduce the burden on soldiers by using lighter calibre ammo and they wanted a more modern calibre ballistics...
by Shalav
29 Dec 2015 09:17
Forum: Military Issues & History Forum
Topic: International Military Discussion
Replies: 2882
Views: 284485

Re: International Military & Space Discussion

Inside a Saturn 1 kerosene fuel tank during flight.





One of the inside of a Hydrogen tank.

by Shalav
20 Dec 2015 14:02
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc) - II
Replies: 4115
Views: 98373

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc) - II

He was a Druze.

From Wikipedia "The Druze faith incorporates elements of Gnosticism, Neoplatonism, Pythagoreanism, Ismailism,[25] Judaism,[16] Christianity,[16] and Hinduism"
by Shalav
21 Oct 2015 10:53
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc)
Replies: 4033
Views: 90989

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc)

TOW has a achilles heel. the operator must be in a relatively clear firing position above the battlefield to both keep lasing... IIRC TOW is optically guided, it guides its missile by comparing a light on the missile body vs the LoS view of the launcher sight. The Soviet equivalent is the Konkurs. ...
by Shalav
15 Oct 2015 07:08
Forum: Strategic Issues & International Relations Forum
Topic: India-US Relations : News and Discussion- II
Replies: 4037
Views: 100570

Re: India-US Relations : News and Discussion- II

SS contributions are available after contributing for 40 credits. 1 calendar quarter = 1 credit. Hence 40 credits means 10 years of contribution. After this you will be eligible to receive SS benefits on reaching retirement age.
by Shalav
12 Oct 2015 20:39
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc)
Replies: 4033
Views: 90989

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc)

Singha wrote:Syed akbaruddin? Or is he slated for London or other big posting?


Permanent UN Rep.
by Shalav
09 Oct 2015 10:30
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc)
Replies: 4033
Views: 90989

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc)

thawks fell on TSP also and were promptly sold to china. being iran, the russians can ask for the wrecks be returned. the iranians might take a look for their own uses before returning. If this happened and the Iranians get a look at the tech. - a couple of 3 years from now suddenly the Iranians wi...
by Shalav
09 Oct 2015 10:25
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc)
Replies: 4033
Views: 90989

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc)

...we will probably go easier on these dense packed boast. We are going to see largish lightly armed ships, that can stay out at sea for long, with load outs of more refined (costly) longer range missiles. Sirji Our longest ranged naval missiles have 1/3rd the range of the Kalibr. :(( I'd rather ou...
by Shalav
05 Oct 2015 23:35
Forum: Strategic Issues & International Relations Forum
Topic: The Levant crisis.(Israel,SYRIA,Lebanon,etc)
Replies: 4033
Views: 90989

Re: The Levant crisis.(Israel,SYRIA,Lebanon,etc)

RE: Turkish Airspace Apparently last year Turkey imposed a unilateral buffer zone 5km deep into Syrian airspace, after (what they say) a SAAF MiG23 intruded into Turkish airspace. Since then SAAF aircraft have not flown within 5 km of the border with Turkey. To all practical purposes this also serve...
by Shalav
01 Oct 2015 10:50
Forum: Strategic Issues & International Relations Forum
Topic: Sunni Terrorist Fragments of Unstable Pakistan-Sept 05, 2015
Replies: 2850
Views: 73861

Re: Sunni Terrorist Fragments of Unstable Pakistan-Sept 05,

What's with the Taliban and Kunduz? General Dostum's the Afghani VP now isn't he?
by Shalav
25 Jun 2015 11:07
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

3-4 years ago I was trying to find out/demonstrate how a ski jump helps and made a video. I did not remember it or bother putting it online until today. It's not a world changing video - but its something :) https://www.youtube.com/watch?v=Nn_Yb1mySvo Nn_Yb1mySvo Perfect! This is the kind of "...
by Shalav
25 Jun 2015 04:17
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Nitpick accepted. Moving on Vina is incorrect. There is no such thing as airflow parallel to the wing in an angled takeoff. All airflow is always parallel to the ground . Airflow does not magically change direction to be parallel to the wing when AoA is changed for a climb rotation, then change dire...
by Shalav
24 Jun 2015 23:16
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Cosmo - the IN is impressively frugal, jugadu and innovative. They tend to get the best from their machines Indian or phoren. I'm betting the Vikrant will be used for a long time. so one could scrap it as bigger carriers are built, but it it more likely the IN will use it in some capacity till EoL. ...
by Shalav
24 Jun 2015 22:44
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

The "airflow" is the headwind (either due to the movement of ship or natural wind blowing or both), flowing horizontally; when the a/c takes off, this wind hits the bottom of the wing surface. Because of this, apart from the normal lift, the wing produces additional lift like that of a ki...
by Shalav
24 Jun 2015 22:34
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Err...That is what an increased AoA is supposed to do. Which according to Vina is not applicable and I am "mouthing off", as per him it is really airflow beneath the wing! Oh BTW you do realise this ski-jump principle works on land too right? See videos of N-LCA test or the latest F35 ski-...
by Shalav
24 Jun 2015 21:59
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

In Doc2 pg 6 When an airplane takes-off from a curved- deck it suddenly jumps into free air. The objective is to approximately reach the suitable speed and angle of attack, at the end of the ski- jump, without exactly respecting the airplane lift to weight equilibrium I don't see anything about airf...
by Shalav
24 Jun 2015 21:51
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

srin

No idea - don't even know if an EMALS can be be made to work efficiently on a ski-ramp. Theoretically it should be possible. Everything else will have to be tested once (if) the EMALS on ski-jump ever becomes reality.
by Shalav
24 Jun 2015 21:34
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

BTW these points from doc2 And the lift increment will be: (Equation) At the end of the ski-jump , corresponding to (Equation) are saying exactly what I initially stated on the previous page. However it was a precise calculation of the AoA hence the slope of the ski-jump combined with the minimum ve...
by Shalav
24 Jun 2015 21:22
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Moving on from blather, my main point still stands.

If an EMALS can be added to a ski-jump, you can get the required velocity and AoA from a shorter take-off run leaving the landing strip free for another waist located EMALS and a pocket sized USN type carrier - amongst other options.
by Shalav
24 Jun 2015 21:17
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Carrier based ski jump Carrier based ski jump 2 Looks like you read only the paragraph headers on page 4 of doc2 we have some details http://www.icas.org/ICAS_ARCHIVE/ICAS2012/PAPERS/167.PDF In the ski-jump, the wind increases the speed and the angle of attack , as shown in Fig. 2. The increase in ...
by Shalav
24 Jun 2015 10:04
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

... blah... blah... Have a nice day. err no - when a plane takes off at an angle the AoA is NOT zero. The airflow is STILL parallel to the ground. That sirji is why millions of planes land every year with a nose up attitude - hope you realise it is to increase the AoA to airflow for greater lift wh...
by Shalav
24 Jun 2015 06:10
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

1. The ski jump is exactly that, a ski jump, which launches you in the air in a ballistic trajectory and since you spend more time in the air, t he horizontal distance you travel will be higher before you hit the sea surface if you just went straight off the end of the bow . Of course, in the meant...
by Shalav
24 Jun 2015 06:01
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

----deleted----
by Shalav
23 Jun 2015 11:50
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

Sankum 50m/sec = 180 kph = ~98 knots 65m/sec = 235 kph = ~120 knots - is that what you say are the rotation velocity for a fully loaded MiG29? Where did you get these numbers from? Vertical velocity in a ski jump has no meaning - AoA and horizontal velocity is what allows for aircraft to t/o from a ...
by Shalav
22 Jun 2015 22:05
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

It makes no sense. The cat has enough power to get any aircraft up to flight speed, and you dont need the ski jump. The ski jump takes up parking space. You cant park any aircraft on the curved surface of the deck at the bow. If you have a cat , you dont need a ski jump for any reason. Even if you ...
by Shalav
22 Jun 2015 19:52
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

amit wrote:The fuel bunker, in terms of space will probably be able to house another 8-10 aircraft.


Fuel and other liquid consumables are stored in the double hulls of carriers.
by Shalav
21 Jun 2015 05:29
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

No dispute EMALS are more dynamic or "dialable" than steam cats. So much the better. The originals observation was directed at the comment that steam cats. cannot be adjusted, and one size fits all.
by Shalav
21 Jun 2015 04:59
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

NRai

Not with the supposed granularity and feedback of an EMALS. BUT YES they are "dialed " for the launch weight.
by Shalav
20 Jun 2015 22:59
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

^^^. The other EMALS cost saving is that you can dial in the force to the weight of the a/c. Steam is a one size fits all from E2Ds to SHornets to UCAVs. This results in stresses on the airframe for that EMALS will minimize. Hidden costs and savings and with hundreds of a/c gaining x number of extr...
by Shalav
20 Jun 2015 22:58
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1712
Views: 110209

Re: INS Vikrant News and Discussion

I'm dreaming of the day we see an EMALS on a ski jump. Theoretically it should be possible to use EMALS in a curved form factor. This is not possible with traditional steam launchers. NRao, Practically speaking while possible to do a simultaneous launch and recovery, IRL it almost never happens. I h...
by Shalav
20 Jun 2015 22:34
Forum: Military Issues & History Forum
Topic: Artillery: News & Discussion
Replies: 4565
Views: 558722

Re: Artillery Discussion Thread

turkey has licensed the K9 design into its own version. supposed to be lot cheaper than pzh2000 and I really hate the 'hand cutter' system of feeding charges in the pzh...the K9 has a automated system to load both shells and charges. see and shiver from around 1:00 https://www.youtube.com/watch?v=-...
by Shalav
15 Jun 2015 22:55
Forum: Trash Can Archive
Topic: International Aerospace Discussion
Replies: 4918
Views: 502723

Re: International Aerospace Discussion

Manish it appears photoshopped to me. There is no distortion behind the exhausts as would be expected from hot gases. The runway slab pattern appears to have been touched up where the front wheel ought to have been. There is no motion blurring of the background. It's a dull cloudy day judging from ...
by Shalav
05 Jun 2015 23:47
Forum: Trash Can Archive
Topic: IAF Rafale News and Discussions - 26 May 2015
Replies: 3973
Views: 180201

Re: IAF Rafale News and Discussions - 26 May 2015

Re-evaluating and negating earlier decisions about the LCA would bring into question what previous ACM's and their juniors were doing! Once the IAF starts saying the LCA is acceptable, the next obvious question would be - why was it not acceptable earlier? Uncomfortable conclusions would be reached ...
by Shalav
05 Jun 2015 01:39
Forum: Military Issues & History Forum
Topic: LCA Tejas: News and Discussions
Replies: 3980
Views: 99807

Re: LCA Tejas: News and Discussions

Sometimes I think Modi and MP are deliberately foisting the budget hardships IN had to face onto the IAF. This hardship made the IN move succesfully towards indigenisation! They still have a way to go, but the results are there for all to see. Capital spend-wise the IAF has the 2nd highest per-unit ...

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