Propeller Design A Simple System Based on Model Propeller Test Data III

This report, the third of a series of four, describes a simple system for designing propellers of a standard form. In this report, the system is based on tests of a family of model propellers of standard Navy form, the data from which have been extended by means of calculations to cover the complete range likely to be found in practice. However, it can be worked out for any family having propellers of on general form. This system can also be applied as given to propellers of different forms by means of form factors. Modifications are made for full scale flight conditions, i.e., the particular tip speed of the propeller, the body or fuselage interference.