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by Indranil
19 Jan 2019 14:31
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

It is interesting to see the continuing optimizations on PSLV. By fattening the third and fourth stages, there is a chance of enhancing payload significantly (by 20-30%) over time. This would require a taller second stage and fatter boosters than the current 6XS12s. Probably, two S85s (from SSLV)?!!!
by Indranil
19 Jan 2019 09:47
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

Dileep Sir, I agree with you on many aspects. First of all, who asks for such requirements in such an ad how manner? What are the SQRs for? This doesn’t reflect highly on professionalism. Having said that, the 32 mm windscreen is present on the Su-30 (only other IAF bird to have it AFAIK). Also, the...
by Indranil
18 Jan 2019 23:39
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

Subsequent costs may be lower due to economies of scale and amortization of development costs. There is no reason why LCH should cost twice of Rudra.
by Indranil
18 Jan 2019 20:02
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

HAL successfully test-fires air-to-air missile from Light Combat Helicopter New part. The LCH obtained “initial operational certification” (IOC) in August 2017. The army has committed to ordering 114 LCHs and the air force 65 – totally 179 helicopters. But, so far, the ministry of defence (MoD) has...
by Indranil
18 Jan 2019 19:55
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

I have to correct myself first. The fuel loading of PS4 was progressively moved up to 2.12 tons for CA and 2.52 tons for XL. And with the HP version (2nd stage powered by HTVE and 42 tons of fuel), the CA version can take 2.52 tons of fuel. This was the config tested in C42 and C43. C-44 is kind of ...
by Indranil
18 Jan 2019 19:04
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

I was very interested to know the fuel loading of the 4th stage of the PSLV-DL version. It is 1.6 tons for CA and 2 tons for XL. I don't know what it used to be for the regular version. It is 1.6 tons for the DL version. The aluminium tank is great news. Along with the upgraded 2nd stage (42.5 ton f...
by Indranil
18 Jan 2019 14:27
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

ADA folks are confident that they can affect the changes and get them certified by June.
by Indranil
18 Jan 2019 14:24
Forum: Military Issues & History Forum
Topic: Indian Air Force News & Discussion - 15 Dec 2016
Replies: 2091
Views: 389024

Re: Indian Air Force News & Discussion - 15 Dec 2016

Please change your name to a human-sounding name in accordance to forum rules. You have three days.
by Indranil
16 Jan 2019 13:02
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

Everything is fine. But why not specify these requirements on time? The IAF is clearly in the loop for all the testing feom day 1.
by Indranil
15 Jan 2019 20:11
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

Prasanna sir, TSTO has always been described as a winged first stage, and a parachute/vertically landing second stage. All the schematics that you presented above depict the same. Dr. Sivan has now said that the first stage will be recovered vertically by landing on a barge, while the second stage w...
by Indranil
15 Jan 2019 13:04
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

The scheme that Dr. Sivan laid out is the inverse of what TSTO has been touted for years. Probably, learnings from SpaceX experiments.

Also, this upcoming PSLV launch is a complete mystery. Microsat cannot be the only satellite that is being launched. Too small for that!
by Indranil
14 Jan 2019 16:28
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

Jay, We know that this conversion can be done and works quite well. So, I don't think that they need to change the CG too much. The Andover was used for paradrops. No less than Price Charles jumped off it. The following link has a good video of STOL operations https://46squadron.org/1966/09/andover-...
by Indranil
14 Jan 2019 11:22
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

Interesting PSLV launch coming up, called the PSLV-DL. 1. 2 strapons only. 2. 4 stage to be retained in orbit for additional experimentation. This one will be powered by lithium-ion batteries, but subsequent ones to be powered by solar panels. 3. Will the fourth stage of the fuel loading of the CA-v...
by Indranil
14 Jan 2019 10:55
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

Low set tail plane makes it very risky for paradropping. Otoh, I believe it's a presurrized cabin. Also I think tail ramp is structurally possible. Albeit fuselage is too high (that is the reason it's tail conic is not chopped slant, as at max AOA tail is too high to risk touching runway. Very unli...
by Indranil
13 Jan 2019 23:06
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

Its not new, It has been there for at least a couple of years now Are these the new low drag pylons? No. But using the tandem arrangement gives significant form drag reduction. One thing that I am keenly looking forward to is the pinched 1300 ltr DFTs. That will reduce drag. But, more importantly, ...
by Indranil
13 Jan 2019 10:49
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

It is always a multitude of corrections. In atmospheric winged flight, yaw will always lead to roll and roll will always lead to yaw.

In an unstable aircraft like LCA, it is much more complex. There is no way for a human to correct such an aircraft. There is no option but for the FCS to correct it.
by Indranil
13 Jan 2019 08:26
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

What kind of Jingos are you :P

SP-12 flew at the end of Nov. It joined the squadron yesterday. SP13 and 14 to roll out soon.

As for asymmetric loads, the FCS takes care of it. No load is passed to the pilot.
by Indranil
12 Jan 2019 08:56
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

Kuala Lumpir has invited Tejas to its air show. Its defense minister has expressed interest to fly in it. How else to perceive this but an interest to buy Tejas. Of course they are shopping around. Just like we did for our MMRCA. But didn’t the MMRCA competitors market their candidacy? What’s wrong ...
by Indranil
12 Jan 2019 08:45
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

Jay,

There’s your answer to the periodicity of launch window to the moon. About 2 months. I would love to learn the principle constituents to this calculation.
by Indranil
12 Jan 2019 08:35
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

The Sqn personnel had to change one main rotor blade, which was broken, when the aircraft tipped over in static condition when parked (not whilst landing). They changed lubricants of the engines, gear boxes, installed fresh batteries and achored it errect. A temporary arrangement was made to reinfo...
by Indranil
10 Jan 2019 19:35
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

HAridasji, you are right. You are actually describing the differences between the 748 and the Andover. Hence, my suggestion.
by Indranil
09 Jan 2019 11:28
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

The Andovers have a cargo ramp. The 748s (in IAF) have oversized cargo doors at the rear. To load through this door efficiently, one has to use pallet handlers which may not be present at ALGs. https://www.ssbcrack.com/wp-content/uploads/2015/12/Hawker-Siddeley-HS-748-iaf-768x587.jpg The new engines...
by Indranil
09 Jan 2019 09:55
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

Get both.C-295 new-gen birds and upgrade as many airworthy AVROs.The IAF's logistic capability increases proportionate to the threat from the Sino- Pak axis. " All hands to the pump", is an old saying.In a crisis even civil birds are utilised for troop movements. Old crocks still have the...
by Indranil
07 Jan 2019 21:20
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

There is no way that IAF/babus will pay more than 1.5x for MK1A than what they are paying for LCA MK1 FOC. This 400 crore per plane cannot be The flyaway cost. IAF/MOD created a committee to look into the price escalation by HAL for MK1A. Nothing has come out which suggest that the committee found a...
by Indranil
04 Jan 2019 12:40
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

I actually like the JF17. The Chinese did a very pragmatic thing there. We went for the exotic. Result: we have a better aircraft, but it took us way more time. Many in the IAF wanted us to go the JF-17 route, i.e. take more incremental steps. By the way, Paul sir, most humbly, your question is very...
by Indranil
04 Jan 2019 10:00
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4345
Views: 410524

Re: Indian Military Aviation - 21 Sept 2015

You can’t be serious. Which F-16/Mirage pilot does not respect the MiG-29? Mig-29s are not as multirole as the former two. But in A2A, it is one of the best fighters ever designed, built and flown. Mig-29s provided air cover for the Mirages in Kargil against F-16s. If Mirages were better, Mirages wo...
by Indranil
03 Jan 2019 15:17
Forum: Military Issues & History Forum
Topic: Naval LCA - News and Discussion
Replies: 964
Views: 150098

Re: Naval LCA - News and Discussion

Correct. Thanks for the correction.
by Indranil
03 Jan 2019 12:44
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

In the expendable mode, the above TSTO should be slightly enlarged version of the Firefly Alpha/Falcon 1e.
by Indranil
03 Jan 2019 12:33
Forum: Military Issues & History Forum
Topic: Naval LCA - News and Discussion
Replies: 964
Views: 150098

Re: Naval LCA - News and Discussion

It gives better stability and lower L/D at higher AoA. So it would aid in better sustained turn rates.
by Indranil
03 Jan 2019 12:29
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

The picture for ADMIRE is from the brochure and poster of ASET2018 arranged by VSSC. The website had other diagrams for L40 used as a booster for tests on the human capsule, RLV etc. Unfortunately, the website has been pulled down and I can't find those diagrams anywhere else. They are very seriousl...
by Indranil
03 Jan 2019 10:22
Forum: Military Issues & History Forum
Topic: Naval LCA - News and Discussion
Replies: 964
Views: 150098

Re: Naval LCA - News and Discussion

Some of these, I knew. For others, I went wow!

NOBODY will give us these know-whys. LCA-Navy is the only way forward.I can tell you that the LCA Navy test team is bouyed by recent successes.
by Indranil
31 Dec 2018 16:44
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

Kakarat sahab, wonderful clicks.

I agree with you (and Disha), GSLV Mk2 is the most goodlooking of ISRO launchers.
by Indranil
20 Dec 2018 05:54
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3455
Views: 728574

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

It will happen Kartik. Before the year-end, or just therafter.
by Indranil
20 Dec 2018 05:11
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

Today, ISRO has all the building blocks to create all liquid LVs from 250-ton to 425-ton class using GSLV Mk3 core and 2-6 L40 strapons. But the focus is to consolidate all manufacturing efforts increasing launch rates of the existing LVs: PSLV, GSLV Mk2 and GSLV Mk3. The RnD focus is almost solely ...
by Indranil
20 Dec 2018 04:28
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3499
Views: 649427

Re: Indian Space Program: News & Discussion - Sept 2016

I agree with you on several things here: 1. GSLV Mk2 as it was launched today could probably lift close to 2.35 tons to GTO. Also, going to super-synchronous orbit to save on fuel for subsequent orbit raising and inclination correction shows ISROs growing mastery on optimization. This technique will...
by Indranil
20 Dec 2018 01:54
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

At sea level, the MGB on both LUH and ALH cannot handle the full power of their respective engines. This is a compromise made for the high altitude performance. If they go for an MGB which can bear the full load at sea level, it would become heavier and larger. High altitude performance would suffer...
by Indranil
18 Dec 2018 18:33
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

Looks more like a Bell 429 to me.
by Indranil
18 Dec 2018 06:11
Forum: Military Issues & History Forum
Topic: Military Flight Safety
Replies: 2063
Views: 238713

Re: Military Flight Safety

Would somebody tweet him and ask, what is the accident rate of Migs? How does it compare to other aircraft?
by Indranil
18 Dec 2018 06:07
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3832
Views: 527346

Re: Indian Military Helicopters

The disc on top of the rotor are fitments for testing. Will be removed in operational copters.

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