Air Force STOL Tactical Aircraft Investigation: Evaluation of Externally Blown Flaps

A study of externally blown flaps for application to a medium-sized STOL transport has been completed as part of the U.S. Air Force STOL Tactical Aircraft Investigation program.

Partial results of wind tunnel tests, design trade studies, and flight simulation tests are presented to illustrate the status of externally blown flap technology relative to Air Force STOL transport requirements. It was concluded that the basic technology is adequately developed for attainment of the performance goals. Continuing engineering work is indicated in the areas of flight control system synthesis and component reliability.