关键词: 流体力学, 气动特性, 数值模拟, 座舱盖, 非定常效应

Abstract: The steady and unsteady aerodynamics of aircraft canopy are simulated by solving the N-S equation for analysing the influence of unsteady aerodynamic effect, the orientation of the body and Mach number of the free flow on aerodynamic coefficients. Furthermore, the aerodynamic look-up graph is established. The result shows that the unsteady aerodynamic effect is the main influencing factor on aerodynamic load distribution and different canopies have the similar rule, i.e., integrated aerodynamic coefficients is linear with non-dimensional pitching velocity.

Key words: fluid mechanics, aerodynamics characteristic, simulation, canopy, unsteady aerodynamic effect