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- Article name
- On modelling of an aerodynamic drag coefficient of a rotary body with small surface distortions of a composite thermal protection coating at supersonic flow
- Authors
- SHVALEVA R. K., , src@makeyev.ru, Joint Stock Company "Academician V. P. Makeyev State Rocket Center"; South Ural Scientific Centre, Miass, Chelyabinsk Region, Russia
KALASHNIKOV S. T., , ofpat@mail.ru, South Urals Federal Research Center of Mineralogy and Geoecology UB of the RAS, Miass, Chelyabinsk Region, Russia
MOKIN Yu. A., , ofpat@mail.ru, South Urals Federal Research Centre of Mineralogy and Geoecology of the UB RAS, Miass, Chelyabinsk Region, Russia
- Keywords
- supersonic flow / rotary body / sharp cone / composite thermal protection material / small surface distortion / small attack angle / variance of an aerodynamic drag coefficient
- Year
- 2023 Issue 4 Pages 11 - 17
- Code EDN
- ABRIOQ
- Code DOI
- 10.52190/2073-2562_2023_4_11
- Abstract
- The issue of modeling is considered the aerodynamic drag coefficient cx at small spatial angle of attack depending on the determining parameters. Based on the analysis of the first and second variations of the aerodynamic drag coefficient during supersonic flow around the body of rotation with small spatial variations of the surface of the composite heat-protective coating (TP), a scheme for modeling this coefficient at small angles of attack and slip is proposed. A scheme for modelling of the mentioned coefficient at small attack and yaw angles is proposed based on the analysis of the first and second variances of an aerodynamic drag coefficient of a rotary body with small surface distortions. Governing parameters of the proposed model are described and integral equations to compute them are obtained on the basis of the DLH (differential form for presenting a generalized locality hypothesis) method. The scheme for modelling is based on Taylor formula for a two-argument function, the expansion of surface distortions into a Fourier series is used to estimate the model parameters.
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