Hawker P.1121 Staff having been unable to understand the concept of the multi-purpose functionality of the aircraft, which would become commonplace on later aircraft. While seeking a new project to take the place of the P.1121, Camm soon began work upon another new and radical aircraft design, designated as the Hawker Siddeley P.1127. The P.1127 would become the Hawker Siddeley Harrier, the first effective vertical take-off and landing (VTOL) combat aircraft. The Hawker P.1121 was envisioned as being one of the first British-built supersonic fighter aircraft, being projected to be capable of speeds of up to Mach 2.5. It was to have
Maurice Brennan assistant chief engineer working with Barnes Wallis on variable-geometry aircraft projects that would eventually become the basis of the AFVG project. However, he resigned again after ten months, joining Folland in 1960, replacing Teddy Petter as director and chief engineer. By this time Folland was part of Hawker Siddley, and he was responsible for developing the two-seat Gnat T.1, various twin engined and variable wing geometry Gnat proposals and the GERM hovercraft project (Ground Effect Research Machine). In 1961 he moved to Avro (also part of Hawker Siddley) succeeding Roy Ewans as a director and chief engineer. From 1961-1969 his