Back Hiller UH-4 "Commuter"
1946

UH-4

This was a development of the XH-44, of which it retained the co-axial contra-rotating two-bladed rotors, though the latter's diameter was considerably increased.

P.Lambermont "Helicopters and Autogyros of the World", 1958

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Two-seat all-metal helicopter with tricycle u/c and coaxial twin rotors. Prot. N67706. Three built.

J.P.Spencer "Whirlybirds: A History of the U.S. Helicopter Pioneers", 1998

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Photo Gallery 

UH-4 Commuter

UH-4 Commuter

UH-4 Commuter

UH-4 Commuter

UH-4 Commuter

UH-4 Commuter

Technical data for UH-4 Commuter

Engine: Lycoming O-290-0, 150hp, rotor diameter: 10.08m, max ceiling: 3660m, cruising speed: 120km/h, range: 320km

Comments 
Scott Ruggels, e-mail, 27.05.2015

I am looking for a fuselage length, as well as a Width, wheel to wheel of this, for the construction of a 3D model. any other specification such a swheel diameter, or Type of Tires used would be usefull.

joe smoe, e-mail, 28.08.2014

YA UP YOUR GAY FAGGOTY ASS LOL

p, e-mail, 11.06.2011

I have designed a rubber powered free flight model of this machine.

Ray Kierna, e-mail, 23.07.2009

I have designed a rubber powered free flight model of this machine, I am looking for a 3-view of this machine, anybody knows where I could find one?

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