Pratt & Whitney R-1535 Twin Wasp Junior radial engine
E926490
The Pratt & Whitney R-1535 Twin Wasp Junior is a 14-cylinder, air-cooled radial aircraft engine developed in the 1930s, widely used in high-performance racing and military aircraft of its era.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pratt & Whitney R-1535 Twin Wasp Junior radial engine canonical | 1 |
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft piston engine
ⓘ
air‑cooled engine ⓘ radial engine ⓘ |
| applicationRole |
high‑performance racing
ⓘ
military service ⓘ |
| boreStrokeConfiguration | two‑row 14‑cylinder radial layout ⓘ |
| configuration | radial ⓘ |
| coolingSystem | air‑cooled ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cycle | four‑stroke ⓘ |
| cylinderArrangement | two‑row radial ⓘ |
| cylinderCount | 14 ⓘ |
| designation | R‑1535 NERFINISHED ⓘ |
| designedFor | medium‑power aircraft applications ⓘ |
| displacement |
1535 cubic inches
ⓘ
approximately 25.2 liters ⓘ |
| era | 1930s ⓘ |
| family |
Pratt & Whitney Twin Wasp Junior family
NERFINISHED
ⓘ
Pratt & Whitney Wasp series NERFINISHED ⓘ |
| firstRun | early 1930s ⓘ |
| fuelType | aviation gasoline ⓘ |
| ignitionSystem | dual ignition ⓘ |
| manufacturer | Pratt & Whitney NERFINISHED ⓘ |
| materialUse |
aluminum alloy components
ⓘ
steel components ⓘ |
| nickname | Twin Wasp Junior NERFINISHED ⓘ |
| notableCharacteristic |
compact two‑row radial design
ⓘ
reliable operation in military service ⓘ widely used in 1930s racing aircraft ⓘ |
| primaryUsePeriod |
1930s
ⓘ
early 1940s ⓘ |
| propellerDrive | direct drive ⓘ |
| successorInFamily | Pratt & Whitney R‑1830 Twin Wasp NERFINISHED ⓘ |
| supercharging | single‑stage supercharger ⓘ |
| typicalCompressionRatio | around 6:1 to 6.7:1 ⓘ |
| typicalMounting | nose‑mounted on aircraft ⓘ |
| typicalPowerOutput | approximately 700 horsepower ⓘ |
| usedBy |
United States military
NERFINISHED
ⓘ
foreign military operators ⓘ |
| usedIn |
military aircraft
ⓘ
racing aircraft ⓘ transport aircraft ⓘ |
| usedInConflict | World War II ⓘ |
| valveTrain | overhead valve ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.