AH-56 Cheyenne

The Lockheed CL-840 first flew on September 21, 1967 and was the winner of the US Army 's 1965 Advanced Aerial Fire Support System, AAFSS , competition.

Grown from the experimental helicopter XH-51 was equipped with an additional pusher prop on the tail and had a max. speed of 400 Km/h.

XH-51 helicopter

By 1968, 10 pre-production units (serial numbers 66-8826 / 8835) were delivered and others 375 units were approved, but meanwhile the Army acquired AH-1G Huey Cobras, a private - venture design of Bell.

Finally, by the end of 1969, with Cobras already in Vietnam, the US Army cancelled the AH-56s request.

Functions: Gunship
First Flight : Sep 21, 1967
Crew: 2

AH-56A :
Engines: 1 * 3435 shp General Electric T64-GE-16
Speed: 370 km/h -- Max: 408
Range: 1400 km
Rate of Climb: 1000 m/min
Weight: Empty: 5320 kg -- Max: 13600
Rotor Span: 15.36 m
Length: 18.30 m
Height: 4.10 m

The AH-56 crash down moments after these pictures were taken by Lee Jones for NASA during a full power test on Sept 17, 1969
AH-56 wind tunnel

See Also:

Bell AH-1 Cobra

AH-64 Apache


The Lockheed CL-840 first flew on September 21, 1967 and was the winner of the US Army 's 1965 Advanced Aerial Fire Support System, AAFSS , competition. Grown from the experimental helicopter XH-51 was equipped with an additional pusher prop on the tail and had a max. speed of 400 Km/h. XH-51 helicopter By 1968, 10 pre-production units (serial numbers 66-8826 / 8835) were delivered and others 375 units were approved, but meanwhile the Army acquired AH-1G Huey Cobras, a private - venture design of Bell. Finally, by the end of 1969, with Cobras already in Vietnam, the US Army cancelled the AH-56s request. Functions: Gunship First Flight : Sep 21, 1967 Crew: 2 AH-56A : Engines: 1 * 3435 shp General Electric T64-GE-16 Speed: 370 km/h -- Max: 408 Range: 1400 km Rate of Climb: 1000 m/min Weight: Empty: 5320 kg -- Max: 13600 Rotor Span: 15.36 m Length: 18.30 m Height: 4.10 m The AH-56 crash down moments after these pictures were taken by Lee Jones for NASA during a full power test on Sept 17, 1969 See Also: Bell AH-1 Cobra AH-64 Apache		Helicopters for sale Accidents Acronyms Airshows Future helicopters Flying a helicopter Helicopter stories TV and movies Helicopter books Helicopter patches Helicopter model kits

Lockheed AH-56 Cheyenne