Doblhoff Wnf 342 V4 Helicopter—Evaluation by General Electric (1948)
 

A new post is up at RetroMechanix.com on the evaluation of the Doblhoff Wnf 342 V4 helicopter by General Electric in 1948:

http://farm6.staticflickr.com/5038/7...d6af6c6b_o.jpg

This captured German helicopter employed blade-tip jets to drive the rotor; it was bailed to General Electric by the USAAF in late 1946 in connection with the development of the XR-17 helicopter, which later became the Hughes XH-17. The article reproduces the majority of the evaluation report, which offers a detailed critique of the design, and includes 9 photos of the helicopter under test.

-Jared

Re: Doblhoff Wnf 342 V4 Helicopter—Evaluation by General Electric (1948)
 

Thanks for posting this up. I have seen this report before, albeit in a later and marginally diferently worded version.