STATIC AND WIND-ON TESTS OF AN UPPER-SURFACE-BLOWN JET-FLAP NOZZLE ARRANGEMENT FOR USE ON THE QUIET CLEAN SHORT-HAUL EXPERIMENTAL ENGINE (QCSEE)

摘要

A simulated wing was used to evaluate installation losses for the nozzles. A smoothly curved flap (Coanda flap) was attached to the trailing edge of the simu¬lated wing to allow an evaluation of the static turning characteristics of the nozzle arrangement. Forward-speed effects on the jet turning characteristics of the QCSEE nozzles were evaluated by mounting a single engine on a semispan wing designed to be representative of a four-engine STOL transport configuration. The low-speed longitudinal aerodynamic performance of the semispan wing equipped with the D-nozzle arrangement was in agreement with the performance obtained with a rectangular nozzle in a previous investigation of a similar wing configuration.