Problems in ram air wing modeling and their solution in the three dimensional simulation code 'PARA3D'

摘要

The shape of an ram air wing in flight cannot be calculated unless the pressure distribution on each individual structural part of the wing is known. ^On the other hand, the pressure distribution cannot be calculated unless the geometrically exact shape of the wing is known. ^It follows that both the aerodynamic and the structural problem must be solved simultaneously. ^This problem, in similar form, appears in aeroelastic modeling of nearly all types of aeroelastic decelerator systems. ^Although recent publications show that the problem can be solved with well-known numerical methods on high-end workstations or supercomputers, the research engineer discovers soon that additional modeling and numerical problems, unknown or with limited influence in usual aerodynamic or structural analysis, must be solved. ^This paper focuses on ten of these problems and describes how they are solved in the three dimensional simulation code PARA3D. ^(Author)