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USN Amphibious Utility Helicopter Competition of 1956

hesham

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From Spangenberg files,

In 1956 the USN issued a high demanding specification for a
fast amphibious utility helicopter,the contenders were Kaman,
Bell,Sikorsky,Vertol and Hiller.
The contenders were;


Kaman K-19 (single-engined) & K-20 (twin-engined)
Hiller Model-1070
Bell D-226 & D-227
Sikorsky S-62
Vertol V.80,V.81 & V.82

The winner was Kaman K-20 and built as Seasprite helicpter.
 

hesham

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From Ailes 30/7/1960,

here is a Model for Kaman Seasprite,but I suspect if it was K-19 single engined Project or K-20 ?.
 

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TomS

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According to the last post you made in this thread, the K-19 was a Synchrocopter, meaning two interleaved counter-rotating props. So this model with a top and tail rotor is clearly the K-20.
 
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