Pratt & Whitney Wasp Jr. R-985-AN-14B
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.
Transferred from the Naval Aviation Museum.
Country of Origin: United States of America
117.5 x 117.5 x 109.4 cm (46.25 x 46.25 x 43.06 in.)
Overall - aluminum and steel.
Type: Radial, 9 cylinders, air cooled
Power rating: 336 kW (450 hp) at 2,300 rpm
Displacement: 16.1 L (985 cu in)
Weight: 309 kg (682 lb)
Manufacturer: Pratt & Whitney Aircraft, East Hartford, Conn.
Cutaway; with moving parts.