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by sankum
27 May 2017 23:51
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

I think that the 100nos NLUH requirement is redundant in face of more capable Dhruv Helo ASW variant order which will go on next gen ASW corvette also. The NLUH was to be equipped with small weather radar with secondary sea surveillance capability and no sonar capability while ASW Dhruv is to be equ...
by sankum
27 May 2017 18:35
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

I just read the RFP for ALH radar. Intergration with sonar sensors diagram is given and the total order is for 42 radar sets for 32nos for CG and IN helicopter on order and may be 10 nos for old IN and CG helos or just spares. It is confirmed that no 360 degree surveillance is envisaged and we will ...
by sankum
27 May 2017 17:19
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

Indranil for ASW version of Dhruv the above radar will do or 360 degree coverage will be developed?
by sankum
26 May 2017 17:06
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

JayS, In LCH HAL has increased take off to 5.8T, so it can be taken that for Dhruv MTOW has been raised to 5.8T. For naval version category Cat A performance i.e, safe take off with one engine operative with old engine was 5.3T which can be expected to be raised to 5.8T with Shakti engine. If the MT...
by sankum
15 May 2017 20:00
Forum: Military Issues & History Forum
Topic: VayuSena Rafale: News and Discussions - 17 Oct 2016
Replies: 2233
Views: 354873

Re: VayuSena Rafale: News and Discussions - 17 Oct 2016

Rafale cant go on INS Vikrant unless lifts are broadened to 12m from present 10m because Rafales wings cant be folded.
by sankum
07 May 2017 16:19
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

Army looks to fast track process of acquiring anti-tank missiles for Rudra helicopter The previous tender had to be scrapped in 2015 as the twin-tube solutions could not be found and having a four-tube launcher would have resulted in the boom touching the ground while landing as the Rudra is not a ...
by sankum
03 May 2017 10:35
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

The DHRUV production at Bangalore at max produces 24 ALH/year and second line is coming up in Kanpur after which it can be expected that Bangalore line will start producing LCH and combined production is unlikely to exceed 48/year. It is not main gear box but reduction gear for each engine. Thus 110...
by sankum
02 May 2017 10:31
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

235 ALH have been delivered by Jan 2017 of approx. 200 to defence. the order stands for IA= 40+105+40=185 IAF=22+54+45=121 IN=8+1+16=25 CG=4+16=20 TOTAL =351 nos OTHERS say 50 total=400 nos. Engine spare are 25% of required. Same may be with gear box also. 280+221=501 nos final expected order. Minim...
by sankum
02 May 2017 10:21
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

The above production plan for lca is already delayed by a year and the delay will be covered only when rate goes up to 25 lca/year.
by sankum
02 May 2017 06:43
Forum: Technology & Economic Forum
Topic: Indian Real Estate Sector
Replies: 1091
Views: 115148

Re: Indian Real Estate Sector

The economics of scarcity since Independence have cost us 30years of lack of development of 70 years. Our builders work on 50% margin. Will this change that quickly?
by sankum
26 Apr 2017 16:20
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

Data from Defexpo 2001 mig 29 prototype could fly from 110m runway on carrier with 18.55T with 650Kg payload and from 190m with 22.4T with payload of 4.5T with 16.6 T thrust engines. Mig29k has larger wing and take off mass of 24.5T with 5.5T ( with 18T thrust )payload from full length runway on INS...
by sankum
26 Apr 2017 00:20
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

On extra large maybe transonic external fuel tank papers are already out on 1332lt optimized EFT may be using the entire 1200Kg weight possible on both inward wing stations. On supersonic tank 710lt centreline EFT paper was out. So far no paper on large supersonic EFT for inward wing stations but ta...
by sankum
23 Apr 2017 13:07
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

As per IN RFI for INS Viramaditya(inferred) it is 13 degree skijump with restraining gear launch distance @125m, 190m and 195m while for INS Vikrant it is 14 degree skijump with launch distance at 144m, 203m and 213m. As per AI2017 reports in this forum NLCAmk1 is 800Kg heavier than LCAmk1 so can be...
by sankum
20 Apr 2017 16:33
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

The aircraft is thrown up with the minimum required velocity so as to allow it to use thrust of engine and partial aerodynamic lift to accelerate to required velocity. If it is served by 14 degree ramp why 45 degree ramp is required. The vertical velocity imparted is= exit velocity sin14. Take the c...
by sankum
19 Apr 2017 13:44
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

Additional LCA Navy Fighter (NP6 & Np7): The cost element for the 3 additional aircraft (NP5, NP6 & NP7) has been provided by HAL and the cost committee duly constituted has had several discussions. This is expected to be finalised by end 2016. HAL has intimated that NP6 will be built in To...
by sankum
19 Apr 2017 07:29
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

The main contributors to improvement in LCA(Navy) Mk2 have been identified as higher thrust engine, an increased wing area, an area ruled and streamlined configuration, lighter landing gear and structure, and improved systems layout towards better safety and maintainability. Flight control features...
by sankum
17 Apr 2017 23:30
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

My estimate is that for 30knots WOD NLCAmk1 should have MTOW of 13.5T (payload 2.9T) and NLCAmk2 MTOW of 16T to 16.5T(payload of 4t to 4.5T for empty weight guess of 8T). For 20knots WOD I have my doubts.
by sankum
17 Apr 2017 22:39
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

The above is a very simplified simulation of ramp take of. Just see the AoA graph (First graph in the video at 26.40 min) "Designing And Testing Flight Control Laws Of Light Combat Aircraft [LCA] Tejas [Aero India 2013] " The angle of attack is maintained constant at max AoA of 19.5 degree...
by sankum
17 Apr 2017 16:38
Forum: Mil-Tech Archive
Topic: Naval LCA - News and Discussion
Replies: 997
Views: 172781

Re: Naval LCA - News and Discussion

It is from the slide in below URL for NLCA WOD is given as 15-20 knots while Cmdr Balaji said that it is relaxed for 57 fighter requirement. Automated Take-Off From Aircraft Carriers For India's Naval Light Combat Aircraft [LCA-Navy] As far as three distance in RFI it is 125m, 190m and 195m with 13 ...
by sankum
17 Apr 2017 10:44
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

The only advertised slide for STOBAR operations is for Sea Gripen were MTOW is limited to 16T for STOBAR while for normal NG version is 16.5T.
by sankum
17 Apr 2017 10:30
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

The IN RFI for 57 fighters is puzzling. IAC2 will not see service before 2030. Rafale will nor fit on either INS Vikramaditya or INS Vikrant as the wing span is around 11m with no wing folding and F35C with low thrust to weight ratio will not fit in STOBAR operations. Only Candidate is F18E/F for wh...
by sankum
11 Apr 2017 10:58
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1803
Views: 154386

Re: INS Vikrant News and Discussion

The above is a very simplified simulation. As the graph in below link shows the maximum AoA is maintained by NLCA for approx. 5 sec to maximize performance while in the above simulation its start decreasing at half the pitch rate as soon as the max. AoA is reached. Automated Take-Off From Aircraft C...
by sankum
07 Apr 2017 23:21
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

Armed forces lost 48 aircraft, 21 choppers since 2011 Defence Minister Arun Jaitley, replying to another query, said the ADA is also developing MK-II version of LCA for the Navy with a higher thrust engine than the one used in MK-I version of Tejas. “Final Operational Clearence (FOC) of LCA (Navy) ...
by sankum
31 Mar 2017 14:02
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

Thanks JayS and Kartik
by sankum
30 Mar 2017 15:21
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

A version of ALH with stretched fuselage, uprated transmission allowing higher MTOW and payload while keeping the overall dimensions nearly same can be built for low altitude operations.
by sankum
29 Mar 2017 12:50
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

It is ASW version of Dhruv for IN with associated sensors and weapons and therefore Rs8000 Cr. Bye-bye sea hawk unless Sea King 42B are retired.
by sankum
28 Mar 2017 21:11
Forum: Trash Can Archive
Topic: Indian Navy News & Discussion - 15 Dec 2016
Replies: 4822
Views: 838624

Re: Indian Navy News & Discussion - 15 Dec 2016

ASW version of naval Dhruv 16nos to be inducted by IN in 2020-22 timeframe. Providing a major boost to the maritime security capabilities of the Navy and Coast Guard, Prime Minister Narendra Modi has cleared a proposal worth around Rs 8,000 crore for acquiring 32 made in India ALH Dhruv helicopters ...
by sankum
20 Mar 2017 23:28
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

Final aim is increase the Lca production to 25/year and 125nos can be produced in 2025-30.
by sankum
19 Feb 2017 13:14
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

There was a news report that by Jan 2017 231 ALH has been produced while a earlier news report was 205nos ALH have been produced by Nov2015.
by sankum
18 Feb 2017 01:03
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

By January 2017, 231nos ALH have been delivered including Dhruv and Rudras. My estimate 35 nos is the delivery of Dhruv to non armed force including export The resultant number to armed force is 196nos. The difference 40nos will comprise of Rudras atleast 25nos on may2016 plus 15nos minimum ALH prod...
by sankum
18 Feb 2017 00:26
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

http://pib.nic.in/newsite/PrintRelease.aspx?relid=144971

06-May-2016

The details of Dhruv Advance Light Helicopters (ALH) inducted in Armed Forces so far is given below:-

IAF-66

Army-78

Navy-8

Coast Guard-4
by sankum
15 Feb 2017 16:07
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

REVEALED: The Indian LCA Navy’s Big Fight Back Two GE F414 engines — one for the AF prototype and one for the LCA Navy — arrived earlier this month, the first batch of eight engines contracted from GE for the Mk.2 programme. For starters, the team plans to move the wings outboard by about 350mm, in...
by sankum
15 Feb 2017 15:45
Forum: Military Issues Archive
Topic: 'Make in India' Single engined fighter
Replies: 5425
Views: 616647

Re: 'Make in India' Single engined fighter

Same as Gripen E class. Then what is the need for Gripen.

16T MTOW for STOBAR and 16.5T MTOW for CATOBAR is my estimate.
by sankum
15 Feb 2017 12:04
Forum: Trash Can Archive
Topic: LCA: News & Discussions - October 2016
Replies: 4125
Views: 745933

Re: LCA: News & Discussions - October 2016

https://twitter.com/delhidefence

Delhi Defence Review ‏@delhidefence · 5m5 minutes ago
Cmd Balaji (ADA) says LCA Mark 2 prototype expected by 2020. Parallel development for CATOBAR capability dev in parallel for IAC2.
by sankum
10 Feb 2017 00:50
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

For IMRH the engine will be in 2500-3000 shp class for twin engine configuration.
by sankum
07 Feb 2017 16:25
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 4193
Views: 669699

Re: Indian Military Helicopters

The tender means that IMRH will be restricted to 12T MTOW.

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