Performance of a 2D-CD nonaxisymmetric exhaust nozzle on a turbojet engine at altitude

Abstract

This paper presents baseline thrust and cooling data obtained with a 2D-CD versatile research exhaust nozzle mounted on a turbojet engine in an altitude chamber. The tests covered a range of nozzle pressure ratios, nozzle throat areas, and internal expansion area ratios. The thrust data obtained show good agreement with theory and scale model results after correcting the data for leakage and bypass coolant flows. Additional work is needed to improve predictability of cooling performance.