'In the 1920s, Frank Whittle, who grew up making model airplanes, designed the first working engine of this type'
a jet engine
INVENTORS & INVENTIONS: In the 1920s, Frank Whittle, who grew up making model airplanes, designed the first working engine of this type
In the 1920s, Frank Whittle, who grew up making model airplanes, designed the first working engine of this type
In the 1920s, Frank Whittle, who grew up making model airplanes, designed the first working engine of this type
INVENTORS & INVENTIONS
a jet engine
INVENTORS & INVENTIONS