A radial engine is a reciprocating internal combustion engine whose cylinders radiate outward from a central crankcase like the spokes of a wheel, giving it a star-shaped profile when viewed from the front; it was the dominant configuration for aircraft engines before gas turbines took over. Charles M. Manly built the earliest known radial engine in 1901, a water-cooled five-cylinder design producing 52 horsepower for Samuel Langley's Aerodrome aircraft, and the inventor Jacob Ellehammer built what is recognized as the first air-cooled radial engine between 1903 and 1904, later fitting a five-cylinder version to his triplane around 1907. Alessandro Anzani's three-cylinder radial engine powered Louis Bleriot's crossing of the English Channel in 1909, and Anzani went on to build radial engines up to twenty cylinders and 200 horsepower by 1914, helping establish the configuration through aviation's early decades.
Facts
SignificanceThe radial configuration became the dominant aircraft engine layout before gas turbines, and the Wright J-5 Whirlwind of 1925 was widely regarded as the first truly reliable aircraft engine, powering Charles Lindbergh's solo trans-Atlantic flight. 1 FAQs
How many cylinders can a radial engine have and is it still built?
Five to as many as 28 cylinders, depending on size; once dominant, radials are now in limited production.
A radial engine mounts its cylinders in a circle around the crankshaft, and sometimes in banks of two or more. The number of cylinders ranges from five to as many as 28, depending on engine size. Radials were once the dominant piston-engine type for aircraft, but they are now in only limited production, and most new requirements are met by remanufacturing existing stock.
Connections
In Field
Source Radial Engine (Wikipedia)Wikipedia contributors
Sources
1. Radial Engine (Wikipedia)
Wikipedia contributors, Wikimedia FoundationHistory section, early development
C. M. Manly constructed a water-cooled five-cylinder radial engine in 1901, a conversion of one of Stephen Balzer's rotary engines, for Langley's Aerodrome aircraft.
Overview section
The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant.
In Group: Piston Aircraft Engines, Intro
The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant.
In Field: Aerospace Engineering, Introduction
The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant.
View the Source Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.