§ 95. Wing Commander Bullusasked the Minister of Supply what research is taking place to limit and eventually to eliminate 123W the noise caused by aircraft; and what progress has been made.
§ Mr. LowWork has been going on for some years at a number of research establishments and firms, under the direction of the Aircraft Noise Suppression Committee of the Ministry of Supply. The making of noise is unavoidable since aircraft propulsion depends upon the transfer of energy to a stream of air. However, the noise of piston-engined aircraft has been reduced and propellor turbines will probably be quieter than piston engines. Experiments are proceeding on jet engines.
The Ministry of Civil Aviation are studying methods of reducing noise at airports and a prototype sound screening wall is shortly to be built at London Airport. It is hoped that this will reduce the nuisance caused by aircraft engines being run up after maintenance.