Airscrew Body Interference: An Examination of a Method of Calculating the Mutual Effect of Airscrew and Body by the Strip Theory

THE present paper deals with a semi‐empirical method of using airscrew strip theory to take account of the mutual interference of a body and tractor airscrew. It also contains a brief account of the successive wind tunnel experiments, starting from the original tests of the “family of airscrews,” which have led up to the theory and which provide the evidence for its accuracy over the somewhat limited range which they cover. The majority of the work has been published at intervals extending over the past six years, and I have to thank the Aeronautical Research Committee for permission to include some recent experimental work not yet published.