Numerical study on dynamic aerodynamic characteristics of rockets with different tail structures

DOI:	10.11809/bqzbgcxb2023.06.016
Keywords:	dynamic derivatives; rocket; pitching combined dynamic derivative; wrap around wings; dynamic flight stability
Abstract:	The dynamic derivative is an important factor related to the dynamic flight stability of a rocket. In order to explore the changes of the dynamic derivative of the rocket with different tail structures under different flight states, this paper takes three tail structures as the research object. Through simulation calculation, the pitching combined dynamic derivatives of the three tail structures are compared and analyzed. The results show that, within the range of a small angle of attack, the larger the angle of attack is, the higher the dynamic flight stability of the rocket with the three tail structures is. When the number of wrap around wings increases, the dynamic flight stability of the rocket with wrap around wings improves. At the same time, the absolute value of the pitching combined dynamic derivative of a flat tail rocket is smaller than that of a wrap around wing rocket, and the dynamic flight stability of a flat tail rocket is inferior to that of a wrap around wing rocket.
Published:	2023-06-28
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