Waxwing was a British solid rocket motor used for apogee kick as the 3rd (upper) stage of the Black Arrow satellite launch vehicles. Waxwing was used to successfully place the Prospero X-3 satellite into low Earth orbit on 28 October 1971, Britain's only satellite launch on an indigenously-developed launch vehicle.
Another use of Waxwing was to increase the velocity of test re-entry vehicles on Black Knight during tests for the Blue Streak missile.[1]
Design was by the Rocket Propulsion Establishment (RPE) at Westcott and it was manufactured by Bristol Aerojet.[2] The casing was spherical and the propellant grain used an internal star profile to control the initial burn rate.
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