Hill Pterodactyl tailles aeroplane, 1925.
© Science Museum / Science & Society Picture Library
Designed by Captain G T R Hill, with the object of being highly controllable but free from stalling characteristics, this tailles pusher, powered by a Bristol Cherub engine, had 30 degree swept wings similar to Dunne's earlier design. It maintained an almost stationary centre of presure. Various versions were tested, primarily at Farnborough.