RAeS Lecture: RAF Defford - Telecommunications Research Establishment

This RAeS lecture explores the fascinating history of flight trials for government research and development of radar, tracing back to 1935 when radio waves from a BBC transmitter were reflected by a Heyford bomber, enabling its detection by a ground receiver.

During World War II, the Special Duty Flight provided aircraft to serve as targets for ground radar systems and to conduct trials of airborne radar for the RAF and Fleet Air Arm. As the conflict progressed, the Telecommunications Flying Unit, and later its successor the Radar Research Flying Unit, tested and evaluated systems for government radar establishments until the unit's disbandment in 1977.

The lecture describes the diverse range of aircraft employed for these critical tasks and illustrates unique examples of engineering innovation that were required—often on a scale otherwise unknown outside the aircraft industry. Dr Dennis Williams, a materials scientist with lifelong aviation passion and current Trustee of the Malvern Radar and Technology History Society, will present this compelling account of RAF Defford's contributions to radar research.

The event is free for both members and non-members. Lectures form an important part of the Royal Aeronautical Society's charitable mission, sharing aerospace knowledge, inspiring future professionals, and promoting understanding of aviation, aerospace and space across the wider community. Under 18s are welcome when accompanied by a guardian.

Event timings: Registration 18:00–18:30, Lecture 18:30–19:30.