Black Knight missiles of the United Kingdom was launched from the Australian range at Woomera to an altitude of over 500 km. Gamma engines were manufactured by Bristol Sidney and used on the Black Knight and Black Arrow launch vehicles. Propellants were High Test Peroxide and Kerosene. Black Knight used 4 chambers in two pairs on the Y and Z axes. The motors were gimballed to provide thrust in all axes. Black Knight was flown in both one and two stage versions. When fitted with a second stage, a solid propellant Cuckoo motor was used, manufactured at RPE Westcott.
Black Knight missile of the United Kingdom was launched from the Australian range at Woomera to an altitude of over 300 miles.
Second British Black Knight rocket reached 350-mile altitude at Woomera, Australia.