 The rocket was driven by a liquid fuelled engine using Tonka 250, a hypergolic mixture comprising 57 percent of raw xylidine and 43 of triethylamine fed into the combustion chamber under pressure.The pressure was provided by small cordite charges fired into the fuel tanks, in the process bursting a pair of thin diaphragms to allow the fuel and oxidizer to flow into the combustion chamber, and launched the rocket.The burn was 2.5 seconds, by which time the rocket had achieved a speed of .