Light Combat Helicopter: News & Discussion: 10 August 2020

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nachiket
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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby nachiket » 19 Aug 2020 21:32

sankum wrote:The LCH in ladakh is operating with only 450kg external payload

That is not surprising. External fuel tanks not necessary for these flights and ATGM's are not available. So 2 rocket pods is all it carries.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby sankum » 19 Aug 2020 22:17

2 rocket pods + 4 mistral AAM.
2*170kg+2*55kg= 450kg

MTOW=4750kg
@4500kg service ceiling 6500m

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby nachiket » 19 Aug 2020 22:45

I didn't see Mistrals in the video. I don't think we have bought any beyond what were acquired for the testing and integration. I haven't seen Rudras carrying them in service as well. I'm guessing they will be bought after the LCH order is signed. Still no clarity about Helina though.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby SajeevJino » 20 Aug 2020 13:07

Last edited by Rakesh on 25 Aug 2020 01:29, edited 1 time in total.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Rakesh » 25 Aug 2020 01:28


sankum
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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby sankum » 25 Aug 2020 02:37

https://www.defexpo.gov.in/assets/dpsu/ ... oucher.pdf


Rakesh,kindly put the official LCH brochure link in the first post. Images can be taken from the brochure.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby tsarkar » 25 Aug 2020 13:12

Question for Helicopter Gurus and HAL Folks -

Why do we de-rate engines of our helicopters?

I understand HAL Cheetah has de-rated engines.

Seeing the HAL Brochure above, I see the LCH has slightly de-rated engines.

What are the benefits of using de-rated engines? Why not use peak power of the engines?

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby ks_sachin » 25 Aug 2020 13:50

tsarkar wrote:Question for Helicopter Gurus and HAL Folks -

Why do we de-rate engines of our helicopters?

I understand HAL Cheetah has de-rated engines.

Seeing the HAL Brochure above, I see the LCH has slightly de-rated engines.

What are the benefits of using de-rated engines? Why not use peak power of the engines?

Tsarkar sir,

There was a very informative post by Hari Nair Sir which touched upon this. This issue came while there was discussion on gearboxes. Indranil and I think Jay were involved in that discussion.

We should make such discussions pinned to a IA Heptr FAQ

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby dinesh_kimar » 25 Aug 2020 18:45

^ They match the power to the Transmission power/ torque.

The gearbox is the Achilles heel in helicopters.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Indranil » 25 Aug 2020 21:04

Tsarkar sahab,

You meet the requirements first. After that you preserve life of the components for obvious reasons.

For example many AJT trainers (like Mako and Boeing's T-7) use the derated F404 engine for increased life and availability with lower maintenance and operational costs.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby tsarkar » 26 Aug 2020 19:45

Thank you, Sachin, Dinesh & Indranil for the informative responses. All points make sense.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Kakarat » 30 Sep 2020 14:23

https://twitter.com/livefist/status/1311176433616564225
FIRST PHOTO: The first Light Combat Helicopter limited series production (LSP) airframe that had its inaugural ground-run yesterday. In the cockpit are Gp Capts Hari Nair & CG Narasimha Prasad. https://livefistdefence.com/2020/06/1st ... opter.html


Image

https://twitter.com/livefist/status/1311184848552247296
FIRST ON LIVEFIST: The first Light Combat Helicopter limited series production (LCH-LSP) airframe on on its first ground run yesterday in Bengaluru. https://bit.ly/3489jVG


Image
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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Kakarat » 30 Sep 2020 14:35

tsarkar wrote:The exhausts look modified upwards in the LSP

Sir, It seems the new exhaust setup was tested before on the TD-4 but we didnt notice it as a clear side view was not available
Image

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby John » 04 Oct 2020 08:50

Kakarat wrote:
tsarkar wrote:The exhausts look modified upwards in the LSP

Sir, It seems the new exhaust setup was tested before on the TD-4 but we didnt notice it as a clear side view was not available
Image

I think someone spotted it and we have discussed it. Because it wasn’t a surprise to me when I saw it.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Indranil » 04 Oct 2020 10:51

The most important change has not been discussed here or anywhere else that I have seen. The glass on LCH is now bulletproof and these have now been tested at high altitude.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Rahul M » 04 Oct 2020 11:01

Upto which calibre ? 7.62?

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Indranil » 04 Oct 2020 11:30

I don't exactly know. Earlier the armor below the side glass was armored. Also the flat glass panels in the front were armored. Now, everything is.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby basant » 04 Oct 2020 11:35

Indranil wrote:The most important change has not been discussed here or anywhere else that I have seen. The glass on LCH is now bulletproof and these have now been tested at high altitude.

(OT) While on the topic, it reminds me of 16 vs 24mm glass for Tejas FOC canopy for bird-hit protection. Guess that was also done.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Kartik » 04 Oct 2020 18:02

Indranil wrote:I don't exactly know. Earlier the armor below the side glass was armored. Also the flat glass panels in the front were armored. Now, everything is.


Thanks for the info, IR! Very happy to hear that crew protection has been improved with bullet proof glass. Low flying gunships are especially prone to being hit by small arms fire and I would've been ok with smaller glass panes if it had meant reducing the chances of a bullet shattering the glass and hitting a pilot.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Prem Kumar » 05 Oct 2020 00:10

Since the powers-that-be, seem to be accelerating the testing/induction of armaments these past few weeks (maybe they're reading BRF), here's a plug:

1) Hope a big order for LCH is placed ASAP, cutting through the red tape
2) Rapid testing/induction of Helina mated with LCH/Rudra

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby asbchakri » 05 Oct 2020 00:31

So do we know where we are with Helina. How close are we to integrate it to a Helicopter for testing. The below article does not exactly tell about it.

https://www.financialexpress.com/defence/dhruvastra-drdo-test-fires-made-in-india-anti-tank-guided-nag-missile/2031568/

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Thakur_B » 05 Oct 2020 10:06

Rahul M wrote:Upto which calibre ? 7.62?


IIRC 0.50 cal.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Rakesh » 22 Nov 2020 00:02

https://twitter.com/HALHQBLR/status/132 ... 35652?s=20 ---> Air Chief reviews LCH program and takes a sortie.

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Rakesh » 22 Nov 2020 00:06

Some more pics of the above flight...

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Re: Light Combat Helicopter: News & Discussion: 10 August 2020

Postby Rakesh » 22 Nov 2020 00:11



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