XH-20 Little Henry
McDonnell XH-20 in flight.jpg
Role Experimental ramjet-rotor powered helicopter
National origin United States
Manufacturer McDonnell Aircraft
First flight 29 August 1947
Primary user United States Air Force
Number built 2

The McDonnell XH-20 Little Henry was a 1940s American experimental lightweight helicopter designed and built by McDonnell Aircraft.[1]

Development

The McDonnell Model 38 was a lightweight experimental helicopter sponsored by the United States Army Air Force to test the concept of using small ramjets at the tips of the rotor blades.[1] As a functional helicopter it was a simple open-frame steel-tube construction.[1] Allotted the military designation XH-20 the first of two first flew on the 29 August 1947.[1]

Although the XH-20 flew successfully the ramjets were noisy and burnt a large amount of fuel and plans to build a larger two-seat XH-29 were abandoned.

Variants

Data from: U.S.Military Aircraft Designations and Serials since 1909[2]

XH-29
XH-20
McDonnell Model 38
experimental lightweight helicopter, two built.
McDonnell Model 79
a proposed two-seat development, cancelled.

Operator

 United States

Aircraft on display

XH-20 at the NMUSAF
XH-20 at the NMUSAF

Specifications

Data from [1]

General characteristics

Performance

See also

Aircraft of comparable role, configuration, and era

Related lists

References

Media related to McDonnell XH-20 at Wikimedia Commons

  1. ^ a b c d e "XH-20 Little Henry Research Helicopter". Boeing. Archived from the original on 2009-12-17. Retrieved 2009-12-20.
  2. ^ Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications. pp. 119–121. ISBN 0-904597-22-9.