HAL Light Combat Helicopter

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Light Combat Helicopter
HAL LCH at Aero india 2013.JPG
A HAL LCH Prototype
Role Attack helicopter
National origin India
Manufacturer Hindustan Aeronautics Limited
First flight 29 March 2010
Status Developmental trials
Primary users Indian Army
Indian Air Force
Produced 2010–present
Number built 3
Developed from HAL Dhruv

The HAL Light Combat Helicopter (LCH) is a multirole combat helicopter being developed in India by Hindustan Aeronautics Limited (HAL) for use by the Indian Air Force and the Indian Army.

Development

Origins

Combat in the Kargil War highlighted the requirement of an attack helicopter made for such high altitude operations.[citation needed] In 2006, HAL announced its plans to design and build the LCH; funds for designing and developing the LCH to meet the requirements of the Indian Army and the Indian Air Force were sanctioned later that year.[citation needed]

The LCH is a derivative of the HAL Dhruv, which was inducted into the Indian Armed Forces. Basing on an existing helicopter is expected to greatly reduce LCH project costs, which is estimated at ₹376 crore (US$55.9 million).[1] The Indian Air Force is to acquire 65 LCHs and Indian Army is to acquire 114 LCHs.[2]

Testing

The first prototype of LCH completed its first ground run on 4 February 2010.[3] HAL has a firm order to deliver 65 LCH to the IAF and 114 to the Army.[4] HAL has performed the maiden flight of its LCH on 29 March 2010. The first LCH Technology Demonstrator (TD-1) flew a 20-minute flight from HAL's Helicopter Complex, Bengaluru. It carried out low speed, low altitude checks on the systems on board. The crew reported that the performance of the helicopter and systems were satisfactory.[5][6]

The third test flight of the LCH was successfully made on 23 May 2010; it fulfilled the desired parameters and allowed for further armed tests to proceed. The second prototype, fitted with weaponry, was unveiled at Aero India 2011 in February 2011. The second LCH prototype (TD-2) featured substantial weight reductions over the earlier TD-1. Ashok Nayak, chairman of HAL, stated that the project has exceeded human and payload requirements mandated by IAF for the development.[7][8] Light Combat Helicopter TD-2 achieved its first flight on 28 June 2011.[9]

On 1 July 2012, the LCH begin a series of trials near Chennai; amongst other elements, the LCH's air speed measurement system will be trialled and various component stresses gauged measured.[10] The third prototype of the LCH is about to be delivered and is expected to be different from the LCH-1 and LCH-2. The third prototype is said to be significantly lighter than its predecessors.[10]

The LCH second prototype, TD-2 completed sea level trials conducted in late June to early July 2012. The trials covered helicopter performance, loads measurement, and handling qualities.[11]

The LCH was expected to be ready for the Initial Operational Clearance (IOC) by December 2010 with the Final Operational Clearance (FOC) in 2011. However, the revised timeframes for LCH should be ready for induction into IAF by 2012–2013.[12][needs update]

The LCH third prototype, TD-3 made its successful maiden flight on 12 November 2014. The flight was piloted by Wg Cdr Unni Pillai and co-piloted by Gp Capt SHK Nair. It took off at 15.20 hrs and flew for 20 minutes.[13]

The LCH fourth prototype, TD-4 is planned for its first flight in early 2015. ₹ 126 crore (US$20.2 million) is sanctioned for TD-4 development and structural build of the platform is already ready.[14]

The cold weather trials of the LCH were carried out at Air Force Station, Leh in early 2015. The engine starts were satisfactory in the temperature of -18 °C at 4.1 km altitude. The flights were also carried out to assess high altitude performance and low speed handling.The trials covered engine starts with internal batteries after overnight cold soak at 3 km altitude and 4.1 km altitude.[15]

In June 2015 the LCH successfully completed hot weather flight trials at Jodhpur with temperatures from 39 to 42 °C. The flight testing covered 'temperature survey of engine bay and hydraulic system', 'assessment of performance', 'handling qualities and loads' at different 'all up weights', 'low speed handling' and 'height-velocity diagram establishment'.[16]

In September 2015, the hot and high altitude trials of LCH were conducted successfully. The third prototype (TD-3) was taken to Leh for testing. Hover performance, low speed handling capability at extreme heights and temperature along with landing at forward locations were tested. The helicopter became the first attack helicopter to land in Siachen. The helicopter landed at high altitude helipads at 13,600 feet to 15,800 feet.[17] The weapon firing trials will be held during the middle of 2016.[18]

Design

Overview

The LCH is being designed to fit into an anti-infantry and anti-armour role and will be able to operate at high altitudes.[19] It has a maximum weight of 5.5 tonnes, and has a service ceiling of 6,500 metres.[20] The LCH design features a narrow fuselage with stealth profiling, armour protection, and will be equipped to conduct day-and-night combat operations. According to reports, the LCH features a digital camouflage system.[21] The LCH has a two-crew cockpit.[22]

Dr Prasad Sampath, general manager of HAL's Rotary Wing Research & Design Centre, told the press during Aero India 2011 that the LCH is "probably the most agile design in the world because of its rotor".[23] HAL said LCH is of 5.5 tonne class, like the Dhruv, it is powered by two HAL/Turbomeca Shakti turbo-shaft engines and inherits many technical features of the Advanced Light Helicopter. The features that are unique to LCH are sleek and narrow fuselage, tri-cycle crashworthy landing gear, crashworthy and self-sealing fuel tanks, armour protection, nuclear, and low visibility features which make the LCH lethal, agile and survivable.[24]

In 2006, HAL selected the M621 cannon incorporated in a Nexter THL 20 turret for the gun armament of the helicopter, operated by a helmet mounted sight.[25][26]

Cockpit and avionics

LCH TD2

The LCH is to have a glass cockpit with multifunction displays, a target acquisition and designation system with FLIR, Laser rangefinder and laser designator. Weapons will be aimed with a helmet mounted sight and there will be an electronic warfare suite with radar warning receiver, laser warning receiver and a missile approach warning system. The two pilots in the LCH sit one behind the other, compared to side-by-side in the Dhruv.[citation needed]

The LCH's modern sensor suite, developed in cooperation with Israel, consists of a CCD Camera, forward-looking infrared imaging sensors and a laser range finder to facilitate target acquisition in all weather conditions, including at night.[citation needed]

The helicopter is to be fitted with a data link for network-centric operations facilitating the transfer of mission data to the other airborne platforms and ground stations operating in the network, facilitating force multiplication.[27]

Roles

LCH is intended for use in air defence against slow moving aerial targets (e.g. aircraft and UAVs), Counter Surface Force Operation (CSFO),[27] destruction of enemy air defence operations, escort to special heliborne operations (SHBO), Counter-insurgency operations (COIN), offensive Employment in Urban Warfare, support of combat search and rescue operations (SAR) operations, anti-tank role and scout duties.[28] It will also be capable of high-altitude warfare (HAW) since its operational ceiling will be 6,000–6,500 metres (19,700–21,300 ft).[23]

Operators

 India

Specifications

Data from Globalsecurity[30]

General characteristics

Performance

Armament

See also

Related development
Aircraft of comparable role, configuration and era
Related lists

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ http://www.defenceaviation.com/2010/04/indias-light-combat-helicopter.html Light Combat Helicopter
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ HAL to flight test LCH prototype next month
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ 10.0 10.1 Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ [1]
  12. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  17. ↑ HAL completes hot, high altitude trials of LCH at Leh
  18. ↑ LCH becomes first attack helicopter to land at Siachen
  19. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  20. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  21. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  22. ↑ [2]
  23. ↑ 23.0 23.1 Lua error in package.lua at line 80: module 'strict' not found.
  24. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  25. ↑ "Missile Mirage", Aviation Week & Space Technology, 1 January 2007.
  26. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  27. ↑ 27.0 27.1 Lua error in package.lua at line 80: module 'strict' not found.
  28. ↑ 28.0 28.1 Lua error in package.lua at line 80: module 'strict' not found.
  29. ↑ 29.0 29.1 Lua error in package.lua at line 80: module 'strict' not found.
  30. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  31. ↑ http://www.turbomeca.com/IMG/pdf/fiche_moteur_ardiden_1h1.pdf
  32. ↑ http://www.forceindia.net/Interview_UnniPillai.aspx

External links

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