Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Numerical simulation study of the effect of rudder slit size on missile aerodynamic characteristics
| DOI: | 10.11809/bqzbgcxb2025.02.009 |
| Keywords: | slit size; aerodynamic characteristics; National Numerical Wind Tunnel; overset mesh; engineering accuracy requirements |
| Abstract: | Aiming at the influence of the rudder slit size between the body and rudder on the aerodynamic characteristics of the missile, for the standard model missile in the literature, the normal force coefficient and the pitching moment coefficient of the missile at different angles of attack and different Mach numbers with different rudder slit size are calculated using computational fluid dynamics(CFD) with National Numerical Wind Tunnel GridStar, and FlowStar software and overset mesh method is used. The results show that: with the increase of rudder slit size, the error of aerodynamic coefficients between numerical simulation and experiments increases significantly. The rudder slit size of 0.05 times the wingspan length, and it can ensure that the error of the majority of the working conditions is within 8%, which meets the engineering accuracy requirements. The rudder slit size of 0.02 times the wingspan length was chosen to be within 6% error for majority conditions. The topological change of the flow field caused by the rudder bias is more significant than that of the rudder slit size. |
| Issue: | Vol. 46 No. 2 (2025) |
| Published: | 2025-02-28 |