Intake Characteristics and Inhomogeneity of Supersonic Passage

Abstract

The type, quantity, location, geometry and size of the intake passage will directly affect the quality of the engine, and then affect the whole propulsion system and even the performance of the aircraft. In this paper, the intake characteristics and inhomogeneity of three different passage structures are studied under supersonic conditions. The numerical simulation models of the intake passages of F-16, F-18 and J-10 were established, and the steady-state calculations were carried out under the condition of Mach number 1.2. In the three intake passages, the total pressure decreases gradually along the flow direction, and the pressure loss near the wall is large, while the total pressure value far from the wall is large, and the pressure field is relatively uniform. The F-18 intake passage has relatively small inlet pressure and total inlet and outlet pressure loss. In terms of inlet uniformity, the intake passage of F-16 has the highest value, F-18 has lower value, and J-10 has the lowest level of inhomogeneity.