Avro 707

The Avro 707 (also known as Type 707) is an experimental aircraft designed and produced by the British aircraft manufacturer Avro. It was developed to test the tailless thick delta wing configuration chosen for the Avro 698 jet bomber, later named the Vulcan. In particular, the low-speed characteristics of such aircraft were not well known at the time. Aerodynamically, it was a one-third scale version of the Vulcan. The second prototype, VX790, was built to the 707B configuration, featuring a longer nose, alternative cockpit canopy, a modified wing with (51°) sweep, and an elongated nose wheel leg for a greater angle of incidence during both landing and take offs. The twin-seat 707C, the final variant, which had been designed to perform delta wing orientation training with the Royal Air Force; however, no production aircraft would ultimately be produced. The handful of 707s that were produced were largely used for flight testing purposes. On 4 September 1949, the first Avro 707 performed its maiden flight from RAF Boscombe Down; low-speed testing began shortly thereafter. Higher speed testing commenced in late 1953 using the third aircraft, the first 707A. After development of the Vulcan had been completed, the four surviving 707s continued to be flown as general research aircraft. The prototype 707C was involved in various research programmes, the majority of which were unconnected to the Vulcan. Numerous tests involving the type were conducted by both the Royal Aircraft Establishment (R.A.E) and the Aeronautical Research Laboratories in Australia. During the early 1950s, the Avro 707 performed several public appearances at the Farnborough Airshows. The last flying Avro 707 was grounded during 1967; three aircraft have been preserved and placed on static display in museums.