HIGH FLYING ON THE GROUND: at the Rolls Royce Altitude Test Plant Available to Purchase

The NEW ROLLS‐ROYCE ALTITUDE TEST PLANT at Sinfin, Derby, was opened in September by the Prime Minister, The Rt. Hon. Harold MacMillan, P.C., M.P., and is designed to establish performance and characteristics of turbo‐jet and turbo‐propellor engines at all operating altitudes and forward speeds likely to be encountered during the next few years. It can simulate altitude and forward speed conditions up to 2.5 mach at altitudes from 36,000 ft. to 70,000 ft. This plant will enable rapid development to proceed by avoiding weather and physical testing problems and it is expected that this will maintain Britain's lead in aero engine design.