[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5139/IJASS.2017.18.2.175

Calculating Dynamic Derivatives of Flight Vehicle with New Engineering Strategies

Mi, Baigang (School of Aeronautics, Northwestern Polytechnical University)
Zhan, Hao (School of Aeronautics, Northwestern Polytechnical University)
Chen, Baibing (Xi'an Modern Control Technology Research Institute)

Publication Information

International Journal of Aeronautical and Space Sciences / v.18, no.2, 2017 , pp. 175-185 More about this Journal

Abstract

This paper presents new differential methods for computing the combined and single dynamic stability derivatives of flight vehicle. Based on rigid dynamic mesh technique, the combined dynamic stability derivative can be achieved by imposing the aircraft pitching to the same angle of attack with two different pitching angular velocities and also translating it to the same additional angle of attack with two different rates of angle of attack. As a result, the acceleration derivative is identified. Moreover, the rotating reference frame is adopted to calculate the rotary derivatives when simulating the steady pull-up with different pitching angular velocities. Two configurations, the Hyper Ballistic Shape (HBS) and Finner missile model, are considered as evaluations and results of all the cases agree well with reference or experiment data. Compared to traditional ones, the new differential methods are of high efficiency and accuracy, and potential to be extended to the simulation of combined and single stability derivatives of directional and lateral.

Keywords

Combined dynamic derivative; Acceleration derivative; Rotary derivative; Computational Fluid Dynamics (CFD);

Citations & Related Records

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