Frank Whittle
 /ˌfræŋk ˈwɪtl/
  /ˌfræŋk ˈwɪtl/
- (1907-96) an English engineer, best known for inventing the jet engine, the type of engine now used in most aircraft, which gives forward movement by releasing a stream of gases at high speed behind it. He was made a knight in 1948.