A derivative of the YHC-1A with more cabin space, meeting the requirement of carrying an entire platoon [Ref Hirschberg. The American Helicopter, pg 50].  Developed in 1959, the YHC-1B Chinook was redesignated CH-47A in 1962; the commercial version designation is Model 234.  The helicopter had won a competition for 'Army medium transport helicopter June 1959'; the cabin capacity is either 32 troops, 24 litters, or 2 to 3 U.S. customary tons of cargo [Ref 312].

Overview

Data on design, manufacture and status

Design authority: The Boeing Company - Vertol Division

Primary manufacturer: The Boeing Company - Vertol Division

Parent type: Boeing-Vertol Model 234/H-47 Chinook

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Tandem (Fore/aft) (x2)

Crew required: 3

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Overall Dimensions

Data on aircraft size

Overall Length: 30.14 m (98.9 ft)

Overall Width: 17.37 m (57.0 ft)

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 2

Engine designation: Lycoming T55-L-5 turbine

Engine manufacturer: Lycoming Engines

Max continuous power: 1642 kW (2201 hp)

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 14969 kg (33000 lb)

Max Range: 185 km (100 nm)

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