Military Wiki
Register
m (→‎External links: Add Wikipedia atribution template and cleanup)
Tag: apiedit
m (→‎See also: Delink non military terms and cleanup)
Line 144: Line 144:
   
 
==See also==
 
==See also==
*[[List of rotorcraft]]
+
*List of rotorcraft
   
 
==References==
 
==References==

Revision as of 00:35, 2 October 2018

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 a 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]

Variants

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

Aircraft on display

The sole XHJH-1 is held by the National Air and Space Museum.[citation needed]

Specifications

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)

Performance

  • 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

  • List of rotorcraft

References

Notes
  1. 1.0 1.1 1.2 Andrade 1979, p. 194
  2. 2.0 2.1 2.2 2.3 "American airplanes - McDonnell". www.aerofiles.com. 25 March 2008. http://aerofiles.com/_mcdon.html. Retrieved 2010-02-16. 
  3. http://www.boeing.com/history/narrative/n028mcd.html
Bibliography
  • Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications. ISBN 0-904597-22-9. 

External links

All or a portion of this article consists of text from Wikipedia, and is therefore Creative Commons Licensed under GFDL.
The original article can be found at McDonnell XHJH Whirlaway and the edit history here.