Sikorsky CH-37 Mojave - Variants

Variants

XHR2S-1

Prototype Assault Transport for the US Marine Corps, powered by two 1,900 hp (1,400 kW) R-2800-54 engines, four built.

HR2S-1

Production model with modified engine nacelles, twin mainwheels and dorsal fin, redesignated CH-37C in 1962, 55 built (order for additional 36 cancelled).

HR2S-1W

Airborne early warning aircraft for the US Navy, two built.

YH-37

One HR2S-1 helicopter evaluated by the US Army.

H-37A Mojave

Military transport version of the HR2S for the US Army, changes included dorsal fin and modified rotor head fairing, redesignated CH-37A in 1962, 94 built.

H-37B Mojave

All but four of the H-37As were modified with a re-designed cargo door, automatic stabilization equipment and crashproof fuel cells. Later redesignated CH-37B.

CH-37A

H-37A redesignated in 1962.

CH-37B

H-37B redesignated in 1962.

CH-37C

HR2S-1 redesignated in 1962.

S-56

Sikorsky company designation for H-37.