Nov 212012
 

EC725 is the last evolution of Eurocopter Cougar family (AS532), the military version of Super Puma (AS332). The helicopter was made famous by the French forces in Afghanistan.

EC225 is a civilian aircraft, mainly used in the oil and gas industry and serving also for utility transport.

EC225 ERA (USA)

EC225 ERA (USA) (source: EADS on Flickr.com)

EC225 ERA (USA)

EC225 ERA (USA) (source: EADS on Flickr.com)

 

EC725 Caracal flying for the French forces in Afghanistan

EC725 Caracal flying for the French forces in Afghanistan (source)

EC725 Caracal flying for the French forces in Afghanistan

EC725 Caracal flying for the French forces in Afghanistan (source)

EC725 Caracal and OH-58D Kiowa

EC725 Caracal and OH-58D Kiowa (source)

EC725 Caracal flying for the French forces in Afghanistan

EC725 Caracal flying for the French forces in Afghanistan (source)

EC725 Caracal flying for the French forces in Afghanistan

EC725 Caracal flying for the French forces in Afghanistan (source)

EC725_Afghanistan

EC725 Caracal flying for the French forces in Afghanistan (source)

Nov 042012
 

Attack helicopters are strong, powerful, sophisticated, fast and lethal. Because they are a major asset for the commanders on the field of battle, they are equipped with the most advanced technologies and generally define the new state of the art during the time of their development.

13 attack helicopters

Considering the models without the derivatives and evolutions, 13 different aircraft are actual attack helicopters. There are domestic and international programs.

These aircraft are often the symbol of diplomatic relationships, today as well as during the Cold War.

Airframe and armaments are generally domestic productions, but engines and equipment often come from the international market, regulated by diplomatic and political decisions (e.g. ITAR).

They are generally the fastest helicopter in a manufacturer’s range of products.

The first attack helicopters were imagined in the mid 1960s in both Soviet Russia and America. Bell launched the Model 209, which first flew in 1965 and then produced the Cobra. AH-1G was fielded for the first time in Vietnam.
USSR’s Mil design offices imagined the Mi-24 Hind as a battle tank, capable of carrying troops as well as combatting. It was followed by Mi-25, Mi-35 and many variants.

MI-24

MI-24 (source)

AH-1Z Cobra

AH-1Z Cobra

 

One decade later, new attack helicopter programs were launched. They were developed from the scratch, unlike the Cobra and Hind: Cobra has an airframe based on UH-1 Huey and Hind is also a troop transport helicopter.

Kamov Ka-50 “Chernaya Akula” (Black Shark) was launched in 1977 and made its maiden flight in 1982. Boeing AH-64 Apache (Hughes Model 77) flew in 1975 and the program started with official support during 1976.

Ka-50

Ka-50 Black Shark

AH-64 Apache

AH-64 Apache

 

Another decade later, USA started RAH-66 Comanche programme, which was eventually cancelled due to budgets cuts. This aircraft should have been the best attack helicopter ever made, providing high performance and stealth technologies. This aircraft has never really entered active duty, but it defined the state of the art. Some say that its technologies were used to develop the stealth Black Hawk.

RAH-66 Comanche

RAH-66 Comanche

 

Russia started Mil Mi-28 “Night Hunter” (NATO reporting name “Havoc”) in 1980 and flew it in 1984. This project was competing against Ka-50. Years later, the Russian government decided to slow down Mi-28 and to push Ka-50. After unsuccessful results of Ka-50, Mi-28 was pushed forward again.

Mi-28

Mi-28 (source)

 

Tiger is a multi-domestic programme launched in 1984 by both France and Germany (later with Spain). MBB and Aerospatiale later merged to become Eurocopter. The helicopter war first designed to slow down Soviet tanks in case of an invasion during the Cold War. The first flight happened in 1991.

Tiger

Tiger (source)

 

Italy also wanted its own attack helicopter, which resulted in the Agusta (later Agusta Westland) A129 Mangusta, flying for the first time in 1988. Turkey decided to integrate this aircraft to its armed forces too. Negotiations started in 2007 and the company TAI took the responsibility to adapt and modernize several systems.

A129 Mangusta

A129 Mangusta

 

After the lack of success of the Kamov Ka-50, the Ka-52 was launched with a wider consideration of the battefield, including missile systems and performing data links. Ka-50 and Ka-52 would operate together, for instance with a Ka-52 designating the target with a Laser beam and a Ka-50 launching the missile.

Ka-52

Ka-52

 

China decided to produce its domestic attack helicopters, which resulted in two parallel programmes : WZ-10 and WZ-19. WZ-19 is based on the airframe and mechanical parts of Eurocopter Dauphin, produced under licence in China (named Z-9).
The WZ-10 aircraft is a much more discreet programme: only few pictures and data have been released yet.

WZ-19

WZ-19

WZ-10

WZ-10

 

South African company Denel started the AH-2 Rooivalk in 1993 and flew it in 1997. Mechanical parts were originally based on Eurocopter Puma, produced under licence as Oryx.

Rooivalk

Rooivalk (source)

 

The youngest attack helicoper LCH (light Combat Helicopter) is developed by HAL in India. The programme started in 2001 and the aircraft made its maiden flight in 2010. The programme encountered several difficulties to meet the target MTOW of 5,500 kg.

LCH

LCH

 

Bonus:

Kawasaki OH-1 Ninja

The Ninja is not a real attack helicopter because its principal armament is primarily dedicated to aerial suppression. It is a Japanese domestic development.

 

OH-1 Ninja

OH-1 Ninja

 

Characteristics

  • All attack helicopters have air-to-air and air-to-ground combat capabilities.
  • All have a turret or mobile cannon.
  • All have rocket launchers.
  • All have at least 4 weapon stations.
  • All have TV and FLIR capabilities, as well as Laser designation and range finder.
  • All have 2 engines.
  • All have anti missile, chaff and flare protection, but not all have armoured ballistic protections.
  • Not all have a radar.
  • Not all are equipped with helmet mounted sight displays.

Heaviest: Mi-24, Mi-28 => 12 t
Lightest: Ninja OH-1  => 4 t
Max range (without auxiliary fuel tanks): Cobra, Tiger  => 750-800 km
Max endurance (without auxiliary fuel tanks): Rooivalk  => 04 hours
Max power/mass ratio: Comanche  => 0,4
Min power/mass ratio: Ka-52  => 0,2

The map below displays the countries with a national (and in cooperation) attack helicopter programme.

World Attack helicopters - Countries

World Attack helicopters – Countries

Nov 032012
 
OH-58D Kiowa

The US Army launched a competition to choose its future armed scout helicopter replacing the ageing OH-58D Kiowa.

This post describes the armament and mission systems proposed for each helicopter. The common characteristics are ballistic weapons (cannons, guns, rockets), guided rockets and anti-tank missiles.

Apparently, not all prototypes are equipped with missile/radar threat detection systems (chaff and flares), but aircraft eventually fielded may have it anyway.

All are equipped with emergency jettison systems.

Two aircraft are not presented here: OH-58D Kiowa and Sikorsky S-97 Raider. The first possibility is a simple no-go from the Army, choosing not to chosse and going only with a retrofit of the current Kiowa fleet. The second aircraft does not exist, except on paper. Therefore everything is still possible and not clearly defined.

OH-58D Kiowa

OH-58D Kiowa

For info: 2,75” = 70 mm; 0,5” = 12,7 mm; 0,3” = 7,62 mm

MD540F

MD540F

MD Helicopters: MD540F (link)

4 weapon stations:

  • 70 mm rockets
  • laser guided rockets (undefined)
  • Hellfire missiles (Laser-guided)
  • 12,7 mm machine gun

other equipment:

AH-6i

AH-6i (http://www.aviationtoday.com)

Boeing AH-6i (link)

2 or 4 weapon stations:

  •  7 x 70 mm rockets launcher (M260)
  • M-134 minigun (7,62 mm Gatling)
  • GAU-19 minigun (12,7 mm Gatling)
  • Hellfire missiles (Laser-guided)
  • laser guided rockets (probably Lockheed Martin DAGR, providing compatibility with Hellfire)

other equipment:

AW139M

AW139M

Agusta Westland AW139M (link)

2 weapon stations:

  • 12,7 mm machine gun
  • 70 mm rockets pods
  • Air-to-Surface Missile (Hellfire?)

other equipment:

  • Electro-Optic / Infra Red (EO/IR) device (looks like a SAFIRE on this picture [source])
  • Missile Approach Warning System (MAWS) and Counter Measures Dispensing System (CMDS)
  • Modular armour, armoured crew seats and armoured floor (link, click “Equipment”)
  • door or window machine guns: 5,56 mm, 7,62 mm or 12,7 mm
AAS-72X

AAS-72X

 Eurocopter AAS-72X and AAS-72X+ (link)

2 weapon stations:

  • 12,7 mm machine gun pod (HMP400)
  • 7 x 70 mm rockets launcher (M260)
  • Hellfire missiles (Laser-guided)
  • DAGR Laser-guided rockets from Lockheed-Martin

other equipment

OH-58F

OH-58F

 Bell OH-58F and Bell OH-58F Block II Kiowa (link)

2 weapon stations

  • M3P 12,7 mm machine gun
  • 7 x 70 mm rockets launcher (M260)
  • Hellfire missiles (Laser-guided)

other equipment

 

Conclusion

All aircraft fulfil the basic requirements. The current Kiowa flies with rockets, 0.5 caliber machine guns and Hellfire missiles. This is the minimum required for the future armed scout. Nevertheless, the guided rockets capability will be welcome.

The question of a bigger caliber weapon may be raised and the answer must consider the definition of an armed scout. This helicopter will need only short range weapons for its self defense within 1 km. 30mm cannon is obviously too powerful for a thin and small aircraft. 20mm caliber have already been seen on UH-1 and EC635, but the weight and the recoil forces make it difficult to install; furthermore, the range capability of the 20mm does not imply a sufficient accuracy ensuring the safety of nearby friendly ground troops. Firing from a distance will be made preferably by attack helicopters providing better cannon accuracy.

Considering the entire mission package, you obviously need missile threat detector and ballistic protection is a big advantage.

Agusta Westland AW139M has still to demonstrate the full weapon system, particularly in the definition of the missile performance which has apparently not been tested yet. On the contrary, the equipment package is very complete and provides mission capability as well as sufficient protection to the crew.

Boeing AH-6i did not show everything. Unmanned capability will be available as well as powerful sensor systems. The choice of 2 or 4 weapon stations is a great advantage, but the performance must still be demonstrated in hot and high conditions.

Eurocopter AAS-72X has promising specifications. Laser guided rockets will be welcome. They have not been announced yet, but since Lockheed-Martin received the responsibility of the mission system development, it would be surprising not to see them on this helicopter. A big strength of this aircraft is a configuration combining a complete weapon package and ballistic protections. If American Eurocopter and Lockheed Martin demonstrate the capability, there is no doubt that pilots will be highly interested in an aircraft that keeps their buttocks in a safe seat.

MD540F is a new aircraft but the equipment looks to be unfortunately limited to the minimal requirements, such as the standard weapons and a FLIR/video camera. This configuration would not correspond to a significant improvement of the current Kiowa.

Last but not least is the Kiowa Block II. The new weapon package provides improved sensors, but only the same weapons as the current Kiowa. It is still not clear if the helicopter will be proposed with Lockheed Martin DAGR, even if the capability has been proven 2 years ago. It would be also interesting to determinate whether Kiowa Block II can be equipped with armour plates in hot and high conditions.

Considering all these arguments, the top aircraft is AAS-72X. All performances are promising, even in hot and high conditions. AW139M is performing as well, but it may be too big to correspond to a realistic armed scout.
Boeing AH-6i could be too light. Nevertheless, the future drone version should be highly interesting.
Kiowa OH-58F Block II would be the second best choice. Beside the performance and the weapon package, the experience of the Bell Helicopter company will work in its favor.