[1] A small monoplane powered by a 200 hp (150 kW) Armstrong Siddeley Lynx IV engine, it had a top speed of 200 mph (320 km/h), faster than contemporary fighters.
[2] It used autopilot principles developed by Professor Archibald Low[citation needed] and already used in the Ruston Proctor AT, a radio controlled biplane that was intended to be used against German Zeppelin bombers.
[citation needed] Data from [2]General characteristics Performance The RAF began work on a true "flying bomb" in September 1925.
Compared with the RAE 1921 Target missile, the Larynx (Long Range Gun with Lynx Engine) was smaller, heavier, and faster.
In fact, a 200 hp (150 kW) Lynx IV engine gave the device a top speed of about 200 mph (322 km/h), making it faster than contemporary fighters.