Author(s)

J. Becker, H. Bergmann & W. Luber

Abstract

Dynamic hammershock effects on the air intake design of supersonic aircraft J. Becker, H. Bergmann & W. Luber Deutsche Aerospace AG, Military Aircraft, 1 Introduction The design of an intake structure for supersonic aircraft is highly dependent on assumptions to be defined in the early design phase and in the subsequent check stress and structural clearance phases. The assumptions to be made are related mainly to the dynamic hammershock pressure wave and its dynamic behaviour in terms of magnitude depending on the pressure at the engine face, the shape of the intake / duct, the flight condition, the change of magnitude during its travel from the air intake to the engine along the duct to the forward intake and the effect of surge interaction in case of two engine intake / ducts. The assumptions have to be based on the extrapolation of known data from other existing projects and a statistical approach has to be chosen with respect to the probability of occurance of the hammer

Keywords