Bespoke 2021 Rolls Royce Boat Tail unveiled | Autocar India
Tempest Mk III - a Hawker Tempest prototype which used a Rolls-Royce Griffon engine with two contra-rotating props rather than a Napier Sabre or Bristol Centaurus. Project was discontinued since Spitfires had
Boeing and Rolls-Royce back British hypersonic spaceplane venture