Lockheed XH-51 - Variants

Variants

XH-51A
four place, three-bladed rotor
XH-51A Compound
modified with a four-bladed rotor and stub wings and an auxiliary 2,900 hp Pratt & Whitney J60-2 engine.
XH-51N
five place, three-bladed rotor for NASA test purposes.
Model 286
five place civilian or military light helicopter offered for sale, none were sold.

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