New Computational Method to Determine Trim Angle of Attack for Reentry Vehicles

摘要

A new method to directly determine the trim angle of attack (AOA) for spacecraft using dynamic unstructured grid technique was developed. Grid movement was controlled by improved spring analogy. Euler equations in arbitrary lagrangian-Eulerian description were solved using a MUSCL-type finite volume scheme. As a validation, the trim AOA of reentry capsule was correctly calculated. This new method has the potential to be applied for complex geometries caused by unstructured grid framework and has relatively high efficiency because single computation is needed.