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Effects of Mach numbers on Magnus induced surface pressure

ASKARY, F ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cja.2020.04.027
  3. Publisher: Chinese Journal of Aeronautics , 2020
  4. Abstract:
  5. Experimental and numerical methods were used to investigate the Magnus phenomena over a spinning projectile. The pressure force acting on the surface of a spinning projectile was measured for various cases by employing a relatively novel experimental technique. A set of miniature pressure sensors along with a data acquisition board, battery and storage memory were placed inside a spinning model and the surface pressure were obtained through a remotely controlled system. Circumferential pressures of the model for both rotational and static conditions were obtained at two different free stream Mach numbers of 0.4 and 0.8 and at different angles of attack. The results showed the ability of this new test method to measure the very small Magnus force via surface pressures over the projectile. The results provide a deep insight into the flow structure and illustrate changes in the cross-flow separation locations as a result of rotation. Similar results were obtained by the numerical simulations and were compared with the experimental data. © 2020 Chinese Society of Aeronautics and Astronautics
  6. Keywords:
  7. Magnus effect ; Spinning projectile ; Surface pressure ; Wind tunnel ; Angle of attack ; Data acquisition ; Digital storage ; Flow separation ; Mach number ; Projectiles ; Controlled system ; Cross-flow separation ; Data acquisition board ; Experimental and numerical methods ; Experimental techniques ; Free stream mach numbers ; Spinning projectiles ; Surface pressures ; Numerical methods
  8. Source: Chinese Journal of Aeronautics ; 2020
  9. URL: https://www.sciencedirect.com/science/article/pii/S1000936120302375