§ 55. Mr. CHORLTONasked the Under-Secretary of State for Air what progress in the use of aero-engines using heavy oil as a fuel, with its increased security against fire arising from an accident, has taken place in the Royal Air Force and in civil work?
§ Sir P. SASSOONSeveral types of compression ignition engine are available for use in civil aircraft. There is no present intention of adopting them in military aircraft in service as no types as yet existing can give the same performance as petrol engines. Research is continuously proceeding in regard to other types of compression ignition engines.
§ Mr. CHORLTONAre there no engines in the service, either military or civil, of this type?
§ Sir P. SASSOONWe are experimenting with this type of engine.