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Development [ edit ]
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] [1] 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 [ edit ]
Data from: U.S.Military Aircraft Designations and Serials since 1909[2]
Model 38 XH-20 Little Henry
experimental lightweight helicopter, two built.
Model 79 XH-29 Big Henry
proposed two-seat ramjet -powered development, canceled.[3]
Operator [ edit ]
United States
Aircraft on display [ edit ]
XH-20 at the NMUSAF
Specifications [ edit ]
Data from [1]
General characteristics
Crew: 1
Length: 12 ft 6 in (3.81 m )
Height: 6 ft 8 in (2.03 m )
Empty weight: 290 lb (132 kg )
Powerplant: 2 × McDonnell Ramjets
Main rotor diameter: 20 ft (6.1 m )
Performance
Maximum speed: 50 mph (80 km/h, 43 kn )
See also [ edit ]
Aircraft of comparable role, configuration, and era
Related lists
References [ edit ]
McDonnell XH-20 at Wikimedia Commons
^ Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909 . Midland Counties Publications. pp. 119–121. ISBN 0-904597-22-9
^ "McDonnell Model Numbers" (PDF) . McDonnell Douglas . July 1, 1974. Retrieved September 3, 2023 .
t
e
Numerical sequence used by USAAC/USAAF/USAF 1941–present; U.S. Army 1948–1956 and 1962–present; U.S. Navy 1962–present
Army/Air Force sequence(1941–1962)
Prefix R-, 1941–1948
Prefix H-, 1948–1962
Tri-service sequence (1962–present)
1962 redesignations
New designations
Alternate sequence
Non-sequential
1
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=McDonnell_XH-20_Little_Henry&oldid=1224125843 " C a t e g o r i e s : ● M c D o n n e l l a i r c r a f t ● 1 9 4 0 s U n i t e d S t a t e s h e l i c o p t e r s ● 1 9 4 0 s U n i t e d S t a t e s e x p e r i m e n t a l a i r c r a f t ● A i r c r a f t f i r s t f l o w n i n 1 9 4 7 ● T i p j e t - p o w e r e d h e l i c o p t e r s ● S i n g l e s e a t h e l i c o p t e r s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a ● C o m m o n s c a t e g o r y l i n k i s o n W i k i d a t a
● T h i s p a g e w a s l a s t e d i t e d o n 1 6 M a y 2 0 2 4 , a t 1 1 : 4 6 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
United States
Media related to McDonnell XH-20 at Wikimedia Commons
