World Library  
Flag as Inappropriate
Email this Article

McDonnell XHJH Whirlaway

Article Id: WHEBN0026224889
Reproduction Date:

Title: McDonnell XHJH Whirlaway  
Author: World Heritage Encyclopedia
Language: English
Subject: Kaman SH-2 Seasprite, Sikorsky XHJS, Kaman K-225, Sikorsky S-61R, McDonnell Douglas A-4G Skyhawk
Publisher: World Heritage Encyclopedia

McDonnell XHJH Whirlaway

XHJH Whirlaway
Role Experimental twin-rotor helicopter
National origin United States
Manufacturer McDonnell Aircraft
First flight August 1944
Number built 1

The McDonnell XHJH Whirlaway was a 1940s American experimental twin-rotor helicopter designed and built by McDonnell Aircraft for the United States Navy.[1][2] It was the first successful twin-engined, twin rotor helicopter in the world.[2] The Whirlaway was the largest helicopter flown up to that time.[3]

Design and development

In 1944, the United States Navy issued a requirement for a large rescue helicopter with capacity for ten occupants. The design was originally designated XHJD-1; shortly after flying it was re-designated the XHJH-1. The XHJH-1 first flew in August 1944, and had twin side-by-side 46 ft (14 m) rotors at the end of pylon wings which turned in opposite directions. Each rotor was powered by a 450 hp (336 kW) Pratt & Whitney R-985 engine.[2]


Original United States Navy designation.[1]
Designation changed before first flight.[1]

Aircraft on display

The sole XHJH-1 is held by the National Air and Space Museum.


Data from [2]

General characteristics
  • Length: 32 ft 2 in (9.80 m)
  • Powerplant: 2 × Pratt & Whitney R-985 , 450 hp (340 kW) each
  • Main rotor diameter: 2× 46 ft 0 in (14.02 m)


  • Maximum speed: 120 mph (193 km/h; 104 kn)
  • Cruise speed: 90 mph (78 kn; 145 km/h)
  • Range: 300 mi (261 nmi; 483 km)

See also

Related lists


  1. ^ a b c Andrade 1979, p. 194
  2. ^ a b c d "American airplanes - McDonnell". 25 March 2008. Retrieved 2010-02-16. 
  3. ^
  • Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications.  

External links

  • McDonnell XHJD-1 Whirlaway in NAMS Collection
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.