The Bell YAH-63, known inside the company as the Model 409, was an experimental attack helicopter that Bell Helicopter built for the United States Army's Advanced Attack Helicopter competition. The Army issued its request for proposals in 1972 and asked for an aircraft that beat the AH-1 Cobra in firepower, performance and range while flying nap-of-the-earth missions, powered by twin General Electric T700 turboshaft engines and armed with a 30 millimeter cannon and anti-tank missiles. In June 1973 Bell and Hughes were chosen as finalists and each received a contract for two prototypes. The YAH-63 borrowed Cobra technology where it could but was largely a new machine, with tandem crew seating, stub wings for armament, a tricycle landing gear, a tee tail and a three-barrelled XM-188 cannon. The first prototype flew on 1 October 1975 and crashed in June 1976. The Hughes YAH-64 was selected in December 1976 and became the AH-64 Apache.
Facts
Engine Class Top Speed (km/h) Maximum Mass (kg) Comparison
Body StyleAircraft (no road body style) 1 Connections
Of Make
Source Bell YAH-63 (Wikipedia)
In the Other Atlases
Manufactured By
Also in Business Atlas: the manufacturer of this subject.
Source Bell YAH-63 (Wikipedia)Design and development, builderQuote, Design and development, builder
The Bell entry, the Model 409 (YAH-63), was by no means "just another Cobra design" though it utilized Cobra technology where possible.
Originated In
Also in Geography Atlas: where this subject originated.
Source Bell YAH-63 (Wikipedia)Advanced Attack Helicopter, programmeQuote, Advanced Attack Helicopter, programme
the U.S. Army issued a request for proposals (RFP) for an Advanced Attack Helicopter (AAH) in 1972
Sources
1. Bell YAH-63 (Wikipedia)
Specifications, empty weight
Empty weight: 6,600 lb (2,994 kg)
Specifications, maximum take-off weight
Max takeoff weight: 14,750 lb (6,690 kg)
Specifications, maximum speed
Maximum speed: 170 kn (200 mph, 310 km/h)
Specifications, powerplant
General Electric T700 turboshaft engines, 1,680 shp (1,250 kW)
Lead
The Bell YAH-63 (Model 409) was an experimental attack helicopter for the Advanced Attack Helicopter (AAH) competition.
Design and development, builder
The Bell entry, the Model 409 (YAH-63), was by no means "just another Cobra design" though it utilized Cobra technology where possible.
Advanced Attack Helicopter, programme
the U.S. Army issued a request for proposals (RFP) for an Advanced Attack Helicopter (AAH) in 1972
Of Make: Bell Helicopter, Design and development, make
The Bell entry, the Model 409 (YAH-63), was by no means "just another Cobra design" though it utilized Cobra technology where possible.
In Group: Attack Helicopters, Lead, vehicle type
The Bell YAH-63 (Model 409) was an experimental attack helicopter for the Advanced Attack Helicopter (AAH) competition.
View the Source2. GlobalSecurity.org: YAH-63
GlobalSecurity.orgYAH-63, first flight
made its maiden flight on 1 October 1975
YAH-63, powerplant
Power was provided by two widely separated 1500shp General Electric YT700-GE-700 turboshafts
YAH-63, fly-off outcome
On 10 December 1976 the Hughes machine was selected as the winning AAH design, and both YAH-63 prototypes were subsequently returned to Bell for disposal.
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