Air‐Cooled Heavy Oil Engines: An Account of some British Experiments, with Suggested Deductions to be Drawn Therefrom

WHEN I was honoured with an invitation to give a paper before this Fifth International Air Congress, I received also a letter from a member of the committee, who is a famous power in aviation in your country, asking if it would be possible for me to say something about air‐cooled compression ignition engines for aircraft, and whether they are likely to play an important part in the aircraft development of the near future.