Object Details
- Manufacturer
- Pratt & Whitney
- Physical Description
- Type: Reciprocating, Radial, 9 cylinders, air cooled
- Power rating: 336 kW (450 hp) at 2,300 rpm
- Displacement: 16.1 L (985 cu in)
- Bore and Stroke: 132 mm (5.2in.) x 132 mm (5.2 in.)
- Weight: 309 kg (682 lb)
- Summary
- Begun in 1925 by former Wright Aeronautical employees as a spinoff from a machine tool company, Pratt & Whitney became one of the world’s largest manufacturers of aircraft engines, and the Wasp Jr. is one of the most successful reciprocating engines ever built. Pratt & Whitney introduced it as a complement to the highly successful Wasp and Hornet families of engines in 1930. The Wasp Jr. was essentially a Wasp of reduced dimensions. Pratt & Whitney and its licensees manufactured over 39,000 versions of the R-985 until 1953 for a wide variety of military and commercial aircraft, including light transports, trainers, sport aircraft, and helicopters.
- The R-985-AN-14B powered the McDonnell XHJH-1 and XHJD-1 Whirlaway helicopters and the Avro Anson V trainer. This Wasp Jr.-aptly nicknamed "The Dancing Engine"- has been sectionalized and motorized to demonstrate the movements of its internal components.
- Credit Line
- Transferred from the Naval Aviation Museum
- 1942
- Inventory Number
- A19761858000
- Restrictions & Rights
- CC0
- Type
- PROPULSION-Reciprocating & Rotary
- Materials
- Overall - aluminum and steel.
- Dimensions
- Height: 117.5 cm (46.25 in.), Width: 117.5 cm (46.25 in.), Depth: 109.4 cm (43.06 in.)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- Location
- Steven F. Udvar-Hazy Center in Chantilly, VA
- Hangar
- Boeing Aviation Hangar
- National Air and Space Museum
- Record ID
- nasm_A19761858000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv993a1a3c0-8d6d-4e19-b40f-9ce86dcb17b2
