Abstract
An extensive nonaxisymmetric nozzle design and performance data base were utilized to evaluate the performance of a vehicle designed for an air-to-air mission. Performance was evaluated through comparative sizing analysis for selected nonaxisymmetric nozzle installations vs a baseline axisymmetric nozzle installation. The nonaxisymmetric nozzle/vehicle with a single, external expansion ramp was found to be lighter in takeoff gross weight (TOGW) than the axisymmetric baseline. The lighter TOGW resulted primarily from the use of thrust vectoring at the transonic maneuver condition used for engine sizing. Both jet lift and thrust-induced lift or supercirculation were the main contributors to improved performance at this flight condition.
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