Analysis of the Rolling Moment Coefficients of a Rockets with Wraparound Fins

Slobodan Mandić, MSc (Eng)

 

The measurements of the rolling moment coefficients were done for two models with wraparound fins and one model with flat fins. The rolling moment coefficients were measured for two cant angles ( 0 and 0,8 ). The measured values were fitted by the fourth order polinom of the angle of attack. It was proven that the rolling moment coefficient at zero angle of attack is equal to the sum of the rolling moment coefficient due to the curvature of the fins and rolling moment coefficient of the canted equivalent flat fins.

Key words: missile aerodynamics, wraparound fins, rolling moment, aerodynamic coefficients, derivatives of the aerodynamic coefficients.