Designation: CH-37B

Sikorsky CH-37B

Sikorsky CH-37B Mojave

A picture of the Sikorsky CH-37B Mojave

In 1951 the U.S. Marines issued a requirement for a new heavy assault helicopter.  Sikorsky’s offering was its first twin-engine helicopter, designated HR2S-1 by the Navy and H-37 by the Army.  The Mojave was a radical design for its time.  It had fully retractable main landing gear and a front opening clamshell door, with the engines in large pods on each side of the main fuselage.  The large five blade rotor was specially designed to allow the helicopter to continue flying if one of the blades was shot off.  The Mojave began testing with both the Army and Marines in 1953.  Deliveries to both services began in 1956, and production continued until 1960.  Mojave’s served as heavy-lift transports until the early 1970s.

Wingspan 72 ft

Rotor Diameter

Length 64 ft 3 in.


Height 22 ft


Weight 31,000 (loaded)


Max. Speed 130 MPH

Maximum Speed

Service Ceiling 8,700 ft

Service Ceiling

Range 145 miles


Engines Two Pratt & Whitney R-2800 radials with 2,100 horsepower each


Crew 2 with 23 passengers



90th Transportation Company, Illesheim, West Germany, 1965

Serial Number

CH-37B “Tired Dude”

Pima Air & Space Museum

Creating unlimited horizons in aerospace education through the preservation and presentation of the history of flight.

Charity EIN: 86-6031135

Copyright ©
Website by CS Design Studios

Contact Info


6000 E Valencia Rd, Tucson, AZ 85756

Operating Hours:
Open 9 AM – 5 PM Daily
Last Admittance at 3:00 PM