Replica of 1903 Wright aero engine.

This four-cylinder engine is a working reproduction of the original of 1903, used for the first powered flights by Orville and Wilbur Wright. The engine was built in Britain for the Museum by the technical school of the de Havilland aircraft company in 1951. The major structural parts of the engine block and crankcase were cast from original patterns and supplied to the Museum by Orville Wright. The original engine drove two wooden propellers by chain drive as can be seen in the Science Museum's replica of the 1903 Wright Flyer. It produced 11hp (8kw) at 1100 rpm.