Abstract: The particle-surface interaction model in "hyperthermal free-molecule flow" postulated by Schamberg has been used to calculate drag coefficient of convex bodies.This paper further gives calculation formulas of aerodynamic moment of convex bodies using this model and proposes a functional expression of relationship between the half-angle of beam φ_0 and the angle ofincidence θ_i.

Key words: Aerodynamic moment, Convex body, Calculation method.