Dust Collection Efficiency for Power Law bodies in h ypersonic 2flight

摘要

A numerical and analytical study predicts (i) the collection efficiency of conical and blunted axisymmetric bodies of the power law family in hypersonic flight through dust clouds, and (ii) the impact angle and velocity. Collection efficiencies of cones using the exact conical flow field solutions are shown for particles obeying a particular dray law. most of the data can be correlated by three dimensionless groups. Results show large variations from collection efficiency based on the less realistic standard drag laws Drag coefficient. Collection efficiency of power law bodies has been determined in the hypersonic slender body approximation for the realistic drag law. An approximate model provides a qualitative description of the collection efficiency and impact angle dependence on the main parameters.