radial engine

Star-shaped aircraft motor

A radial engine is an internal combustion engine with cylinders arranged in a circle around a central crankshaft, like spokes radiating from a hub.

This configuration was standard in propeller aircraft through World War II, prized for its power-to-weight ratio and air-cooling efficiency.

The distinctive round profile of vintage warplanes comes from housing these engines.

aviation

propeller

Rotating blades creating thrust

crankcase · airframe · fuselage · throttle · manifold · carburetor · magneto · supercharger · horsepower · torque

vintage

biplane

Aircraft with two wing levels

airshow · antique · classic · taildragger · golden age · aerodrome · hangar · aviatrix · pioneer · collectible

design

concentric

Sharing one center

crankshaft · pushrod · rocker arm · cooling fins · compact · symmetrical · vibration · counterweight · reliability · simplicity

Categories
Opposites
cylinder arrangement geometry

radial engineinline engine

Engine with aligned cylinders

straight engine · V engine

engine design philosophy

radial enginejet engine

Thrust-producing aircraft powerplant

turboprop · rotary engine · turbofan · turbojet · electric motor

Family

engine, radiant, radiate, radiation, radiator, radial, radius, radiating, radially

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G