Aircraft Data Sheet: Pterodactyl lA & lB (1928)

First flight:	June 1928
Span:	13.87m/45ft 6ins
Length:	5.18m/17ft 0ins
Max weight:	408kg/900lb
Max level speed:	61knots/113kph
Power plant:	One 32shp/48kW Bristol Cherub lll. (Pterodactyl la) One 70shp/52kW Armstrong Siddeley Genet. (Pterodactyl lb)
Total built:	One

The Pterodactyl l was the first of a series of experimental designs undertaken by Westland working with Capt. Geoffrey Hill to investigate the handling qualities of tailess aircraft. A control system consisting of wing tip 'elevons' and trailing edge flap/rudders was perfected and an extensive flight programme followed. A single prototype was built.