Sikorsky Aircraft S-56 (H-37 / CH-37 Mojave)

Heavy Transport Helicopter

Sikorsky CH-37B Mojave United States Army 58-1005 © Karsten Palt
Photo ©: Karsten Palt
The Sikorsky S-56 is a heavy twin-engined transport helicopter with a capacity of 36 passengers built by the American manufacturer Sikorsky Aircraft. Main productions variant were the CH-37A (H-37A) of the US Army and the CH-37C (HR2S-1) of the US Marine Corps.
The Sikorsky S-56 is the largest piston-engine helicopter ever built. Nearly all (90 of the 94 built) CH-37A helicopters were later modified to the CH-37B version. Some S-56 were operated after military service by Keystone Helicopters.
Crew2
Passengers36
Propulsion2 Radial Engines
Engine ModelPratt & Whitney R-2800-54 Double Wasp
Engine Power (each)1566 kW2100 hp
max. Cruise Speed211 km/h114 kts
  131 mph
max. Speed (vne)241 km/h130 kts
  150 mph
Service Ceiling2.652 m8.700 ft
Rate of climb528 m/min1732 ft/min
Range400 km216 NM
249 mi.
Empty Weight9.072 kg20.000 lbs
max. Takeoff Weight14.061 kg31.000 lbs
Rotor Blades (main/tail)5/4
Main Rotor Diameter22,00 m72 ft 2 in
Tail Rotor Diameter4,75 m15 ft 7 in
Rotor Disc Area380,1 m4091 ft
Length (Fuselage)19,80 m64 ft 12 in
Length26,80 m87 ft 11 in
Height6,71 m22 ft 0 in
First Flight18.12.1953
Production Statusout of production
Total Production154
Data for (Version)Sikorsky S-56
VariantsCH-37A, CH-37B, CH-37C

[Photo-ID: 11188] Karsten Palt 2015-06-03
Sikorsky CH-37B Mojave, United States Army, 58-1005, c/n 56-150, Karsten Palt, 2015Sikorsky
CH-37B Mojave
United States Army
Reg.: 58-1005
c/n: 56-150
 
Pima Air and Space Museum [Tucson, AZ]
[Photo-ID: 11189] Karsten Palt 2015-06-03
Sikorsky CH-37B Mojave, United States Army, 58-1005, c/n 56-150, Karsten Palt, 2015Sikorsky
CH-37B Mojave
United States Army
Reg.: 58-1005
c/n: 56-150
 
Pima Air and Space Museum [Tucson, AZ]