Optimisation and characteristics of a sailwing windmill rotor. Final Report.

Within this fourth and final quarter progress report are comprehensively discussed all of the research efforts undertaken by the Princeton windmill group over the past year. This includes a detailed accounting of the deveopment and operational techniques of the Princeton moving-vehicle windmill testing facility. Also presented is a complete documentation of the performance build -up (CPmax equals .06 to CPmax equals .40) of a 12ft. diameter two-bladed Sailwing rotor. This report further includes an examination of an exploratory research effort directed toward using a small, first-stage, co-axial rotor to augment windmill performance. Finally considered are the results and conclusions of an extensive wind-tunnel test program aimed at a quantitative determination of the aerodynamic penalties associated with numerous simplifications of the basic double-membraned Sailwing cross-section. (A)(Microfiche)