Dismiss Notice
Welcome to IDF- Indian Defence Forum , register for free to join this friendly community of defence enthusiastic from around the world. Make your opinion heard and appreciated.

Attack Helicopters of IAF - Light Combat Helicopter (LCH), AH-64D Apache : Updates & Discussions

Discussion in 'Indian Air Force' started by flanker143, Mar 16, 2011.

Tags:
  1. LonewolfSandeep

    LonewolfSandeep Lieutenant FULL MEMBER

    Joined:
    Jan 4, 2017
    Messages:
    493
    Likes Received:
    626
    Country Flag:
    India
    HAL Light Combat Helicopter ( LCH ) : Light-Lethal-Multirole (Part4 of 4)
    Engines :

    [​IMG]

    HAL LCH is powered by two HAL/Turbomeca Shakti turboshaft engines, each of which can generate up to 871kW and can run for up to 3,000 hours without maintenance. Each engine weighs 205kg and has an output speed of 21,000rpm.

    Shakti features a remarkably compact modular architecture. The gas generator includes two centrifugal stages attached to a reverse-flow combustion chamber, a single-stage gas generator turbine and a two-stage power turbine. This design ensures that the engine remains very cost-effective, particularly in terms of maintenance and cost of ownership. The engine received European Aviation Safety Agency certification in 2007. It features a Full Authority Digital Electronic Control system, which decreases the work of the pilot by automatically counting engine cycles. It is called Ardiden 1H1 by Turbomeca and its engines have a radial air intake and a two-stage centrifugal compressor driven by a single stage axial gas generator turbine. Airflow is directed through a reverse flow annular combustion chamber, through the gas generator turbine and then through and a two-stage axial free power turbine. Output power is transmitted to a front-mounted reduction gearbox by a shaft concentrically mounted within the gas generator rotor assembly. The accessory gearbox, also mounted at the front end, is driven by the gas generator. Control is by means of a dual-channel DECU.

    Its Specifications are :

    Power :-

    Emergency Power: 1,204 kW (1,614 hp)
    Max Continuous Power: 880 kW (1,180 hp)
    Max Power at TakeOff: 1,053 kW (1,412 hp)
    OEI 2 min: 1,099 kW (1,473 shp)
    OEI Continuous: 1,024 kW (1,373 shp)

    Time :-

    Time Between Overhaul: 3,000 hour

    Weight :-

    Dry Weight: 180 kilogram (397 pound)
    [​IMG]




    Comparison to other Attack Helicopters :

    1. AH-64 Apache
    [​IMG]

    India has ordered AH-64E for it as well when development of LCH was underway. While this procurement raised many eyebrows towards the capability of LCH , the role-difference was found the reason for the procurement. The Apache will be the first ( imported ) pure attack helicopter in India's possession. While the Russian origin Mi 35 has been operated for years and is now on the verge of retirement, it was an assault chopper that was designed to carry troops into heavily defended territories. Since India is phasing out its vintage Mi-35 fleet India needed a heavy-attack helicopter which can be filled by Apaches.
    [​IMG]

    The rate-of-climb (ROC, measured here in meters/second) is a true measure of the maneuvering capability of an attack helicopter. Typically, a ROC of 0.5 m/sec is used to evaluate service ceiling conditions. If the hover performance is evaluated at altitudes varying from 0 ft (SL) to 25,000 ft. Altitudes in the Himalayan Mountains regularly require flights above 10,000 ft and often up to 22,000 ft. The data is presented for the LCH and the Apache for payload and available maximum ROC capability versus altitude. A threshold ROC line is shown for the reference 8 m/sec combat ROC. sea-level performance of the LCH and the Apache are similar. The Apache, with a 1,000 kg payload is able to generate a maximum vertical ROC capability of 12.77 m/sec. By comparison, at sea-level, the LCH is able to carry the 1,000 kg and is able to provide a power excess for a theoretical max ROC of 15.16 m/sec. It is instantly apparent how the Apache is able to use its outstanding source of power to lift its much heavier mass and still come close to the LCH performance. This heavier bulk involves greater armor and protection for the Apache pilots.

    Now consider how the change in altitude affects both helicopters. The Apache, trying to maintain the 1,000 kg payload, begins to tail-off its ROC capability from 12.77 m/sec at sea-level to 0 m/sec ROC at ~18,000 ft. Beyond 18,000 ft altitude, the Apache also cannot carry its 1,000 kg payload and the tail-off in that capacity is visible, although less dramatic than the Z-10 from the previous articles. The Z-10 cannot operate beyond 10,000 ft under any conditions. The Apache, on the other hand, flies and fights up till ~15,000 ft altitude.

    The LCH, on the other hand, once again utilizes its light-weight structure to great effect. It can not only maintain the 1,000 kg payload for another 3,000 ft altitude (i.e. up to ~21,000 ft), the tail-off in the ROC does not drop below 8 m/sec until ~11,000 ft. The tail-off does not drop below the minimum 2.5 m/sec until ~15,000 ft.

    In rest feature comparison Apache edges out LCH in almost every aspect. The LCH will turn out to be more agile and have higher performance in general because it is custom-designed to fight at higher altitudes. The Apache, on the other hand, is a brute-force machine, matching the LCH up to the Himalayas for payload, but losing out in agility. The Apache will be less agile than the LCH but will take more hits and keep flying. Where the LCH will look to evade and survive, the Apache will turn to its armor.

    2. Z-10 :
    [​IMG]


    The Z-10 is already operational and in service with the PLA but very little is known about its operations after induction into service and the problems being encountered which is normal in a newly manufactured aircraft – every new aircraft needs a period of two to three years to stabilise. The LCH, on the other hand, is still in its final developmental stage and yet to become operational and enter service. However, going by the comparative analysis of the stated capabilities of both attack helicopters as brought out earlier in the article, the basic configuration and key specifications are almost similar. Even the design features related to the cockpit, avionics, sensor suites and weapons /armament package are similar barring the different types/ origin of equipment being used. The present engine of the Z-10, the WZ- 9 is, in fact, a liability, restricting the full exploitation of the combat potential of the helicopter. However, the development of the WZ-16 engine for the Z-10 is going to be a complete game changer, giving it enhanced weapon carriage capability( 16 missiles compared to the earlier 8) as well greater flexibility to operate in mountainous terrain. Its stated flyby-wire capability gives it a clear edge over the LCH as it reduces the load of the pilot, thereby facilitating efficient mission management. The main weapon of the AH is the Air-to-Ground Missile (ATGM) and the Chinese HJ-10 missile being comparable to the Hellfire is a very potent weapon with range of more than 7 km. The Helina anti-tank missile for equipping the Rudra and LCH is not likely to be ready in the near future, leaving a critical void in the capability of the above Indian armed/attack helicopters. The targeting systems in both AHs are electo-optical which have similar capability but if the MMW radar is installed on the Z-10 as claimed in the documents, it will give a distinct edge for multiple targeting even in adverse weather conditions, However, the MMW with the present technology needs a bigger platform like the Apache. This claim/development by the Chinese needs to be closely monitored. The only aspect where the LCH scores over the Z-10 is in its high altitude operations capability but this will only manifest itself once the LCH enters service and actually operates at these altitudes. Hence, based on the above facts in the overall analysis, presently, the Z-10 certainly has an edge over the LCH – however, this assessment could undergo a change once the LCH is fielded and justifies its stated claims.
    [​IMG]


    Going by the way LCH was compared to AH-64 "Apache" if LCH is compared to Z-10 the hover performance is evaluated at altitudes varying from 0 ft (SL) to 25,000 ft. Altitudes in the Himalayan Mountains regularly require flights above 10,000 ft and often up to 22,000 ft. The data is presented for the LCH and the Z-10 for payload and available maximum ROC capability versus altitude. A threshold ROC line is shown for the reference 8 m/sec combat ROC. Notice how the sea-level performance of the LCH and the Z-10 are significantly different. The Z-10, with a 500 kg payload (not counting weapons and fuel) is able to generate a maximum vertical ROC capability of 3.6 m/sec. By comparison, at sea-level, the LCH is able to carry the 500 kg and is able to provide a power excess for a theoretical max ROC of 21 m/sec! Of course, this will not be allowed in reality. The LCH powertrain transmission limitations will bring that max ROC to about ~10 m/sec for structural safety reasons. Both helicopters are able to lift the 500 kg requirement at sea-level.

    Now consider how the change in altitude affects both helicopters. The Z-10, trying to maintain the 500 kg payload, begins to tail-off its ROC capability from 3.6 m/sec at sea-level to 0 m/sec ROC at ~8,000 ft. Beyond 8,000 ft altitude, the Z-10 also cannot carry its 500 kg payload and the tail-off in that capacity is dramatic. The Z-10 cannot operate beyond 10,000 ft under any conditions.

    The LCH, on the other hand, utilizes its light-weight structure to great effect. It can not only maintain the 500 kg payload for all altitudes from sea-level to the Himalayan mountain tops, the tail-off in the ROC does not drop below 8 m/sec until ~12,000 ft. The tail-off does not drop below the minimum 2.5 m/sec until ~19,000 ft. The LCH can fly, and fight, at all altitudes in the Himalayas. Mi-35 performance numbers is because Pakistanis went for the Mi-35 option when the spanking-new Z-10s were on the table.

    This shows that LCH is well above the cut than Z-10 in terms of maneuverability.
    [​IMG]

    Comparison with other attack helicopters is shown above in the table based upon specifications.

    Since India envisions HAL LCH to be exported to other countries as well so , TAI/AgustaWestland T129, Euro-copter Tiger and Harbin Z-19 are some of the helicopters which can directly complete with HAL’s LCH in Light attack helicopter categories in Export market, but each helicopter has different technical parameters and its own set of technical advantages which will leave it to Users requirements to decide which Gunship will suit their needs . LCH specifically designed for support of ground troops at high altitudes will also find prospective customers in South America which have similar terrain, African countries too in lookout of cheaper attack helicopters can be potential clients along with Countries in Asia .

    Achievements :
    Currently HAL is manufacturing SU-30 MKI, HAWK, DO-228, Advanced Light Helicopter (ALH), Cheetah / Chetak / Cheetal Helicopters and pilotless target aircraft. Besides it undertakes repairs and overhaul of these aircraft / helicopters and other aircraft like Jaguar, Mirage, Kiran, Mig-21, HS-748, AN-32. HAL has taken up design and development of Light Combat Helicopter (LCH), Light Utility Helicopter (LUH) and Basic Turboprop Trainer (HTT-40). Co-development of Fifth Generation Fighter Aircraft (FGFA) and Multirole Transport Aircraft (MTA) with Russia is also under progress.

    The basic achievement of LCH programme was to cater to IAF and Indian Army needs for a dedicated attack helicopter which can operate at high altitudes like Himalayas which act as a border between India and Pakistan-China with which India has hostile relations and has fought wars as well. The development of ecosystem for helicopter development with HAL successful development of HAL Dhruva was successfully utilized in development of HAL LCH by using some of the advanced developmental procedures to develop the HAL LCH. Also, a need has been felt to increase the numbers beyond the present two squadron strength to cater for the current employment philosophy in support of the Cold Start Doctrine which India has been allegedly planning against Pakistan for which attack helicopters need to be an integral part.

    Speaking to Mathrubhumi, Dr M Vijaya Kumar, Executive Director, Rotary Wing Research and Design Centre, HAL said that the fourth technology demonstrator (TD-4) is very close to the delivery standards. “The IOC is expected any time now and the first limited series production (LSP) copter should be coming out by 2018.” says Dr Kumar. He said the production drawings for LSP have been finalised.

    Part of a handout brochure on the day of the inaugural flight :


    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    HAL LCH by standards is one of the best attack helicopters and not a low-end solution to "what a desperate air force and army needs" as is claimed by some. Its high maneuverability coupled with ability to operate at high altitudes and rugged conditions with an impressive EW suite makes it one of the most formidable weapons platform in India. HAL start work on it from 3rd October 2006 and the design and development of LCH, and completed the task over a 24-month period. They reduced its weight from 5 ton to 2.5 ton to achieve grant it the caption of light helicopter. For India it is a military-marvel after LCA Tejas with which India has ushered in a new area of military modernization as well as self-reliance as this will pave way for development for future developments. HAL has committed to "Make-in-India" drive as HAL has finalised a major plan to manufacture nearly 1,000 military helicopters and over a hundred planes, in tune with government's focus on speeding up defence indigenisation. "We are going to build around 1,000 helicopters including Kamov 226, LCH (Light Combat Helicopter) ALH (Advanced Light Helicopter) in the next 10 years," HAL Chairman and Managing Director T Suvarna Raju told PTI in an interview.
    [​IMG]

    What’s the most important thing to develop a technology/ product? Different peoples have different opinions some may say money, someone may find human resource is the most important thing. Yes all these are very important but one thing stood up above all these that is the research and test facilities; these are the most important thing to develop anything.

    HAL well utilised the ecosystem already started with Dhruv in development of HAL LCH. The ecosystem started with HAL LCH now will be well continued by future plans forthwith.


    In Service :

    On 26th August 2017 HAL LCH was dedicated to nation by Defence Minister Arun Jaitley. The mass production of LCH started in full swing. An initial order of 15 units was given.

    With Light Combat Helicopter India and HAL has established itself as a major player in aviation industry. HAL played well in development of LCH catering to the armed forces demands in making a combat helicopter much above the world standards and capable to wreak havoc on enemy hardware and defend itself with much survivability features in hostile environment. Its composite airframe makes it light,durable yet sturdy and well armoured comparing to any helicopter gunship of 21st century era.

    Myanmar Armed Forces Commander-in-Chief Senior General Min Aung Hlaing checking the India's HAL Light Combat Helicopter (LCH) :
    [​IMG]


    Specifications :-

    Length : 15.8 metres
    Main rotor diameter : 13.3 metres
    Height : 4.7 metres
    Weight (empty) : 2250 kg
    Weight (maximum take off) : 5800 kg
    Maximum speed: 265 Kmph
    Range: 550 Km
    Service Ceiling: 6.5 km
    Climb rate: 5 m/s
     
    Last edited: Aug 27, 2017
    ashkum2278, Sancho, Pundrick and 2 others like this.
  2. LonewolfSandeep

    LonewolfSandeep Lieutenant FULL MEMBER

    Joined:
    Jan 4, 2017
    Messages:
    493
    Likes Received:
    626
    Country Flag:
    India
    HAL Light Combat Aircraft Enthralling Pictures :-
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    my fav pic below :)
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  3. SDV

    SDV IDF NewBie

    Joined:
    Aug 23, 2017
    Messages:
    1
    Likes Received:
    0
    Country Flag:
    India
    ^^^
    where r pics ??
     
  4. Blackjay

    Blackjay Developers Guild Developers -IT and R&D

    Joined:
    Nov 16, 2016
    Messages:
    400
    Likes Received:
    767
    Country Flag:
    India
    The site fullafterburner.weebly.com where these pictures are hosted is blocked by DOT.You will have to open them using a proxy.
     
  5. Gessler

    Gessler Mod MODERATOR

    Joined:
    Mar 16, 2012
    Messages:
    9,423
    Likes Received:
    8,501
    Country Flag:
    India
    Arun Jaitley inaugurates LCH production line -

    [​IMG]
     
    Art90, GSLV Mk III, Pundrick and 6 others like this.
  6. snehil aditya

    snehil aditya IDF NewBie

    Joined:
    Dec 21, 2016
    Messages:
    4
    Likes Received:
    9
    Country Flag:
    India
    Jaitley be like-bhai log kaam badhiya karna.

    ============================================
     
    Sahil ecclstone likes this.
  7. Robinhood Pandey

    Robinhood Pandey SECOND IN COMMAND Staff Member SECTION CHIEF

    Joined:
    Oct 16, 2016
    Messages:
    559
    Likes Received:
    1,519
    Country Flag:
    India
  8. X_Killer

    X_Killer Lieutenant FULL MEMBER

    Joined:
    Apr 2, 2017
    Messages:
    917
    Likes Received:
    1,101
    Country Flag:
    India
    High speed variant of Mil Mi-24

    Russian Helicopters To Develop High-Speed Attack Helicopter based on technology from the Mi-24K test flights.

    #Russian #Helicopters’ Mil Moscow design bureau has been contracted by the Russian defense ministry to work on the concept of a high-speed attack helicopter.

    As part of the SBV program, #Mil will spend two years refining designs for a high-speed attack helicopter. This will build on the company’s recent experience flying a highly-modified Mi-24 “Hind” attack helicopter, designated Mi-24LL PSV. It was originally developed to experiment with technologies for the company’s high-speed Russian Advanced Commercial Helicopter (Rachel).

    Mi-24LL flight trials conducted in 2016 saw the aircraft attain speeds of around 219 kt. (405 km/hr.). This was slightly faster than the 216 kt. achieved by a modified Westland Lynx in 1986, which still holds the official world speed record for a conventional helicopter.

    The Mi-24LL was fitted with more powerful Klimov VK-2500 engines and new-design composite rotor blades with curved tips. The aircraft has been fitted with several different wing configurations, but it is unclear which configuration it was using when it completed the high-speed flight.

    At the time of the flights, senior Russian government officials were openly talking about the procurement of a fleet of high-speed attack helicopters capable of cruising at 350-360 km/hr. that could perhaps enter production during the next round of state arms purchases, set for 2018-2025.

    Russian Helicopters “has developed a series of scientific and technical reserve [knowledge] for a promising high-speed helicopter,” said Andrey Boginsky, Russian Helicopters’ director general. “With the indicators and experience gained during the tests, both the Ministry of Defense and our holding believe the parameters received during the tests and the experience gained to be enough to move on to the next stage.”

    It is not clear if this will lead to a new-design attack helicopter or modified derivatives of the attack helicopters already operational in the Russian inventory. The Russian Army Air Force already has three types of attack helicopters operational, including the Kamov Ka-52, Mil Mi-28 and Mi-24/35. Ka-52s also have been adapted for naval use.

    Meanwhile, the general designer of Klimov, Alexey Grigoriev, described the development of a new generation of helicopter engines making greater use of additive manufacturing processes. Grigoriev also said consideration is being given to replacing the main gearbox with an electric drive similar to that tested last year on a modified Robinson R44 in the U.S. But it is not clear if Grigoriev is talking about a hybrid system using a turbine to provide electrical power for an electric motor or eliminating the engines altogether.

    “The power plant no longer includes an engine and a main reducer, but a DC motor that rotates the screw directly,” he said through a translator. “We are striving to make not just an evolutionary, but a revolutionary step in the development of power plants for helicopters.”

    Russia has become more reliant on the #Klimov bureau for helicopter turboshafts after being cut off from #Ukrainian supplier Motor Sich because of Moscow’s annexation of Crimea and its support for the insurrection in Eastern Ukraine.

    [​IMG]
    . .
     
    LonewolfSandeep and GuardianRED like this.
  9. Sancho

    Sancho Lt. Colonel Technical Analyst

    Joined:
    May 3, 2011
    Messages:
    4,887
    Likes Received:
    2,961
    CLGM is based on LAHAT, as said the same design in a large form factor, to suit IA requirements, with some Indian components. LAHAT (original) => CLGM (customized version for Arjun) => SAMHO (man portable version).

    http://www.newindianexpress.com/nat...non-launched-laser-guided-missile-445637.html

    LAHAT:
    [​IMG]

    CLGM/SAMHO:
    [​IMG]

    None of the helicopters have LAHAT integrated yet, IAI only offered them for Indian and foreign forces, while IA specifically aimed on Helina and wanted to procure PARS 3 as a stop gap!

    http://indiatoday.intoday.in/story/...tion-council-army-navy-airforce/1/919085.html
     
    Last edited: Aug 29, 2017
  10. X_Killer

    X_Killer Lieutenant FULL MEMBER

    Joined:
    Apr 2, 2017
    Messages:
    917
    Likes Received:
    1,101
    Country Flag:
    India
    LAHAT is already used by Cortian OH-58 and Azerbaijan's Mi-17s.
    one of the pic is already shared by you
    Israel Aerospace Industries (IAI) has recently successfully completed a series of demonstrations of LAHAT missiles firing from helicopters.


    there is not way to reinvent the wheel. Only technology can be modified or improved.

    There are various missiles which can be launched from cannon in a guided mode.
    MGM-51 Shillelagh, 9K112 Kobra,AT-11 Sniper, french ACRA, Ukrainian Kombat , XM1111 Mid-Range Munition, Сockerill Falarick-105 , LAHAT , CLGM etc.

    All of them are cannon launch with guided mode.

    I can say that CLGM is solely developed by After the failure of the laser homing anti-tank (LAHAT) missile.
     
  11. Sancho

    Sancho Lt. Colonel Technical Analyst

    Joined:
    May 3, 2011
    Messages:
    4,887
    Likes Received:
    2,961
    Just that we were talking about IA, Rudra and LCH.
     
  12. LonewolfSandeep

    LonewolfSandeep Lieutenant FULL MEMBER

    Joined:
    Jan 4, 2017
    Messages:
    493
    Likes Received:
    626
    Country Flag:
    India
  13. Sancho

    Sancho Lt. Colonel Technical Analyst

    Joined:
    May 3, 2011
    Messages:
    4,887
    Likes Received:
    2,961
    https://thediplomat.com/2017/09/india-successfully-tests-anti-tank-guided-missile/
     
  14. Gessler

    Gessler Mod MODERATOR

    Joined:
    Mar 16, 2012
    Messages:
    9,423
    Likes Received:
    8,501
    Country Flag:
    India
    via Livefist

    LCH will conduct test-firings of Mistral ATAM (air-to-air missile) by end-2017 from Chandipur. LCH in these tests will be carrying 4 ATAMs per wing unlike Rudra which carried two per wing.

    [​IMG]
     
    Sancho and Blackjay like this.
  15. GuardianRED

    GuardianRED Lieutenant FULL MEMBER

    Joined:
    Oct 13, 2016
    Messages:
    849
    Likes Received:
    1,239
    Country Flag:
    India
    4 under each wing?? just a quick search ... no other aerial platform that uses this missile carries that , the LCH will?
     
    Blackjay likes this.

Share This Page