The Bell D-292 was an American experimental helicopter developed by Bell Helicopters for the United States Army Advanced Composite Airframe Program (ACAP), as part of the studies involved in the Light Helicopter Experimental (LHX) program.

D-292
Role	Experimental helicopter Type of aircraft
National origin	United States
Manufacturer	Bell Helicopter
First flight	30 August 1985
Number built	1
Developed from	Bell 222

Design and development

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The Bell D-292 was developed under the US Army's Advanced Composite Airframe Program (ACAP), which was a project to develop an all-composite helicopter fuselage, considerably lighter and less costly to build than predominantly metal airframes, in support of the LHX program.[1][2] In February 1981, contracts were awarded to Sikorsky and Bell Helicopters, with Sikorsky submitting the S-75.[3] Both companies were to build three airframes, one tool-proof version, one static-test version and a flight-test vehicle.[3]

The Bell D-292 used the Avco Lycoming engines, transmission, two-bladed main and tail rotors, tailboom, vertical fin, and rotor pylon from the Bell 222. The new airframe replaced metal with composites for greater strength, reduced weight and both lower manufacturing and maintenance costs.

The D-292 serial number 85-24371 flew for the first time on 30 August 1985[4] following delays due to funding and industrial problems.[3]

Specifications

General characteristics

• Crew: four
• Length: 40 ft 5 in (12.32 m)
• Height: 11 ft 2 in (3.40 m)
• Empty weight: 5,765 lb (2,615 kg)
• Max takeoff weight: 7,485 lb (3,395 kg)
• Powerplant: 2 × Avco Lycoming LTS 101-750C-1 turboshaft, 684 hp (510 kW) each
• Main rotor diameter: 42 ft 0 in (12.80 m)

See also

Related development

• Bell 222

Aircraft of comparable role, configuration, and era

• Boeing Model 360
• Sikorsky S-75

Related lists

• List of helicopters

References

Notes

Bibliography