Pratt & Whitney Wasp R-1340 SC1, Radial 9 Engine

Object Details

Manufacturer

Pratt & Whitney

Physical Description

Type: Reciprocating, Radial, 9 cylinders, air-cooled

Power rating: 336 kW (450 hp) at 2,100 rpm

Displacement: 22.2 L (1344 cu in)

Bore and Stroke: 146 mm (5.8 in) x 146 mm (5.8 in)

Weight: 295 kg (650 lb)

manufactured circa 1932-36; has data plate; missing carburetor, starter, generator, magneto, 2 spark plugs, top half of exhaust system, crankshaft nut, no. 7 cylinder pushrod housing nuts (housing is broken), and gas primer lines missing; push rod no. 8 broken; no. 3 cylinder has broken fins; no. 5 and no. 9 cylinder intake manifolds dented; no. 5 and no. 6 cylinder oil lines flattened; exhaust manifold dented; front spark plug harness dented

Summary

The Navy's interest in air-cooled radial engines encouraged Frederick Rentschler to establish the Pratt & Whitney Aircraft Company in 1925. The first Wasp was completed and tested in December of that year, and a second Wasp first flew in May 1926 in a Wright F3W-1 Apache aircraft. Two hundred production engines were delivered before the end of 1926.

The Boeing F2B-1 was the first operational aircraft to use the Wasp, which became known for its reliability, and was dominant in Navy and Army Air Corps fighter planes. It also made commercial air transportation profitable in the Boeing 40A. The Wasp R-1340 remained in production until 1960, later models producing up to 447 kW (600 shp).

The Wasp R-1340 SC1 powered the Bellanca Model F-2 and CH-400; Boeing Alpha 4-A; Boeing 4E; Curtiss 6000A; Detroit DL1; Douglas Dolphin 8-114; Fairchild FC-2-W2 and C-96; Laird CL-RW-450; Lockheed Model 5C, 10C, and C-101; Sikorsky S-36BS, S-38B, and S-38C.

Credit Line

Gift of Gateway Technical Institute

Circa 1932 -1936

Inventory Number

A19761915000

Restrictions & Rights

Usage conditions apply

Type

PROPULSION-Reciprocating & Rotary

Materials

Steel, Aluminum, Paint, Copper, Rubber, Ceramic, Magnesium, Leather

Dimensions

Approximate: 151.13 x 157.48 x 121.92cm (4ft 11 1/2in. x 5ft 2in. x 4ft)

Overall: 1066lb. (483.5kg)

Country of Origin

United States of America

See more items in

National Air and Space Museum Collection

National Air and Space Museum

Record ID

nasm_A19761915000

Metadata Usage (text)

Not determined

GUID (Link to Original Record)

http://n2t.net/ark:/65665/nv979285d53-9369-448e-9851-03ae5b36261a