Tuesday, 10 February 2009

Light Combat Helicopter encounters delays




(photos: courtesy Ajai Shukla)

(Top right: A view of the armament boom, flare dispensers and the EW housing on the new weaponised Dhruv)

(Bottom right: the GIAT 20mm cannon turret, and the sensor housing on the nose of the Dhruv. This was initially a fixed gun, before the IAF requested redesign into a turret)



(Bottom left: A long shot of the display-painted WSI Dhruv that will be seen at Aero India 2009)




By Ajai Shukla
HAL, Bangalore
Business Standard, 10th Feb 09

Visitors to Aero India 2009, being held in Bangalore from 11th to 15th February 09, who hoped to catch a first-ever glimpse of India’s high-tech Light Combat Helicopter (LCH), will go back disappointed. Hindustan Aeronautics Limited (HAL) has told Business Standard that design glitches --- including extra weight and delays in manufacturing the tooling on which the LCH will be fabricated --- have pushed back the first flight by up to a year.

Some consolation will be afforded to enthusiasts of indigenous production from the first display flights of a black leopard-painted prototype of the armed Dhruv Advanced Light Helicopter. Called the Weapons Systems Integrated Dhruv (WSI Dhruv) this is the machine on which the LCH’s armaments and sensors are being perfected, even as designers struggle to pare down the extra 250 kilos that have come up on the LCH.

“An extra 250 kilos may not seem much on a 5.5 ton helicopter, but it really is a serious problem”, explains HAL’s helicopter design chief, N Seshadri. “At altitudes of 6000 metres (almost 20,000 feet), which the LCH must operate at, the air is so thin that it can only carry a weapons payload of about 350-500 kg. If the helicopter ends up 250 kg heavier than planned, its high altitude firepower will be dramatically reduced.”

Being built on the basic design of the Dhruv ALH, the LCH is currently HAL’s most prestigious project. Many of its components, including the engine, crucial moving parts like the rotor, and the instrumentation of the LCH have already been tested on the Dhruv. Armaments and sensors are taking shape on the WSI-Dhruv. With much of this already done, HAL had planned to fly its first LCH prototype by December 08; a second prototype was to be readied in the first half of this year. But that timeline has turned out to be too ambitious.

One reason is that the LCH is technologically far more complex than the Dhruv. The Dhruv is a utility helicopter, designed for simple tasks like reconnaissance, casualty evacuation and for conveying small teams of up to 7 soldiers. In contrast, the LCH is an attack helicopter, a flying weapons platform built purely for combat. It must fly and fight by day and by night, bringing down missile, rocket and cannon fire on dangerous enemy targets like tanks. To avoid detection by radars and by individuals it must fly almost at ground level; its crew needs bulletproofing against ground fire. It must have sophisticated electronics to confuse enemy radars.

The private sector company that has designed the LCH’s fuselage, Plexion Technologies, is working overtime to cut down the extra 250 kg. Meanwhile HAL is trying to convince the air force to accept the first prototype with some extra weight, so that flight tests can begin even as Plexion slims down the LCH.

There are some delays also in selecting the weapons systems that the LCH will carry. The air-to-air missile, which will be bought from abroad, has not been selected. The LCH was to be fitted with the DRDO’s Nag anti-tank missile, but the services want a missile that can hit tanks at 7 kilometers, compared with the 4 km range of the Nag. So while the DRDO works on a longer-range version of the Nag (called the HELINA, or Helicopter-mounted Nag), a foreign missile will have to be bought as an interim solution.

Tomorrow: Aero India spotlight on the Light Combat Aircraft (LCA)

14 comments:

Anonymous said...

Thank you sir for the detailed report on LCH. Eagerly awaiting for LCA report.

Your detailed reporting is admirable.

Anonymous said...

ajai do u have a more specific date when the LCH will be tested (month / yr)?

Thank u

Prasun K Sengupta said...

Isn't it premature to even arrive at an estimated figure for the overweightedness when 1) the mission avioonics/sensor fit have not yet been selected, and 2) the weapons fit has yet to be finalised, this excluding the Nexter Systems-built 20mm cannon that has already been selected? For the AAM, the MBDA-built Mistral ATAM has also been down-selected, while the primary anti-srmour guided-missile is most likely to be the Joint Common Missile (JCM) with tri-mode seeker, which is also being offered for the Super Hornet.

Rahul Singh said...

'JCM' Gosh! Hadn't you regularly reported in FORCE that LCH's primary anti-amour missile will be AIR-NAG.

Prasun K Sengupta said...

The LCH's primary armament will be the MBDA-built Mistral ATAM air-to-air missile, as the LCH's primary role is that of anti-UAV ops. The secondary mission is anti-armour but to date all LCH mockups and scale models have only shown it with Forges de Zeebrugge-built 2.75-inch rocket pods and Mistral ATAMs. But for the Dhruv ALH's armed variant, the Nag/Helina system is being developed. The LCH will use the Nag if you believe what the DRDO is saying, but the end-user wants something else which is lighter but more lethal.

neosumit said...

This is another bull shit talk by DRDO ..what does he mean by turret gun ..don't these DRDO guys have any user side vision ..I am sure this quota system has screwed DRDO ..in my point of view these are just brain less people that drdo has filled

Broadsword said...

Lots of misperceptions about the LCH floating around. I'll put in another post with clarifications... and a pic of the latest mockup of the LCH.

thanks!

Anonymous said...

Ajai, can I upload the last image of the Weaponised ALH to Wikimedia commons? Thank you.

Anonymous said...

neosumit, BLOCKHEAD, wtf are you talking about idiot ??

Broadsword said...

Please feel free to post the WSI photo on Wikipedia if you want.

thanks!

Anonymous said...

PKS u said LCH will use LAHAT!!

Anonymous said...

Does the Dhruv WSI house armed soldiers too?

ivan said...

its very dissapoint to see that our project is getting delayed year by year, why don't our country work jointly wth foreign companies, we are already suffering a big threats from china and pakistan.china is developing their military power, same goes with pakistan and projects delays make them laugh and nothing else. we have lost our ground in arjun tank, lca delayed by almost 10 years. the threats are so worst that the war can break out at any time, so we should fastened our projects too. atleast happy with my country's naval project. all i will like to say that we should gear up as soon as possible

Anonymous said...

None of the Military appratus is unique in first instance as such induction of LCH should be implemented with further refinement in due course. That brings a level of confidence to the manufacturers and users to that stage.

In no case it should be kept hanging indefinetely as expert consultants can find a solution in due course.