Piasecki H-21 - Specifications (CH-21C)

Specifications (CH-21C)

Data from U.S. Army Aircraft Since 1947

General characteristics

• Crew: 3–5 (Pilot, co-pilot, crew chief and one or two gunners in Vietnam)
• Capacity:
  
  • 20 troops or
  • 12 stretchers
• Length: 52 ft 6 in (16.01 m)
• Rotor diameter: 44 ft 0 in (13.41 m)
• Height: 15 ft 9 in (4.80 m)
• Disc area: 3,041 ft² (282.6 m²)
• Empty weight: 8,950 lb (4,058 kg)
• Loaded weight: 15,200 lb (6,893 kg)
• Max. takeoff weight: 15,200 lb (6,609 kg)
• Powerplant: 1 × Wright R-1820-103 radial engine, 1,425 hp (1,063 kW) driving 2 rotors

Performance

• Maximum speed: 127 mph (110 knot, 204 km/h)
• Cruise speed: 98 mph (85 knots, 158 km/h)
• Range: 265 mi (230 nmi, 427 km)
• Service ceiling: 9,450 ft (2,880 m)
• Disc loading: 5 lb/ft² (24 kg/m²)
• Power/mass: 0.09 hp/lb (150 W/kg)

Armament

• Varying, but usually one or two .50 (12.7 mm) or 7.62 mm M60 machine guns.