Span = 25' 1"
Span over missiles = 28' 1"
Length = 45'
Height = 10' 10"
Maximum speed: M2.0 at 35,000ft or more
Climb to 50,000 ft: 2.2mins
2 Firestreak missiles on wings
Weight empty: 7,400lbs
Rocket Fuel: 10,500lbs
Jet Fuel: 500lbs
Armstrong Siddeley Viper A.S.V.8 turbojet of thrust 1,640lb
De Havilland Spectre rocket motor 8,000lbs thrust
The jet intakes are mounted high in the fuselage just behind the cockpit, and the jet pipe runs aft. Below the jet is the rocket motor.
Of the three prototypes, 2 were completed. XD145 first flew 16May 1957, and is now in the RAF Museum at Cosford. XD151 first flew on 5 December 1957, but crashed on 5 August 1958, killing the pilot. No cause for the crash was established.
The information for this page comes from "From Sea to Air", the history of Saunders Roe, published by Crossprint, IoW, and available from GKN Westland Aerospace, Castle Street, E. Cowes, IoW. Permission applied for.