Motion characteristics after ricochet: an experimental investigation

• Autorzy: Chen Guoming , Hu Junhua , Liu An , Feng Jinfu , Hu Qingqing

Identyfikatory

DOI

10.2478/pomr-2020-0021

• Języki publikacji: EN

Abstrakty

EN

The ricochet behaviour of the air–water trans-media vehicle (AWTMV) during water-entry crossing was experimentally investigated. Three types of small-scale AWTMV including cone, ogive, and flat nose were used in the test. The underwater trajectory, velocity, and inclination angle of projectiles during the ricochet process were obtained using a high-speed camera. The angle change of the AWTMV and the ratio of the residual velocity are introduced. Based on this result, the relationship between the ricochet responses and initial conditions was derived. The results of this study show that (1) a small incident angle and great velocity make the occurrence of ricochet behaviour easier, (2) the stability of the trajectory of projectiles with cone, ogive, and flat nose weakened in turn at the same initial conditions, (3) the angle change and the ratio of the residual velocity are linear functions of the incident angle and velocity.

Słowa kluczowe

EN

air-water trans-media vehicle (AWTMV); ricochet; nose; initial conditions; responses

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2020
• Tom: nr 2
• Strony: 4--10
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Chen Guoming

• Aeronautics Engineering College Air Force Engineering University Room 1, BaLing Road, Baqiao District, 710038, Xian City, China

autor

Hu Junhua

• Aeronautics Engineering College Air Force Engineering University Room 1, BaLing Road, Baqiao District, 710038, Xian City, China

autor

Liu An

• Aeronautics Engineering College Air Force Engineering University Room 1, BaLing Road, Baqiao District, 710038, Xian City, China

autor

Feng Jinfu

• Aeronautics Engineering College Air Force Engineering University Room 1, BaLing Road, Baqiao District, 710038, Xian City, China

autor

Hu Qingqing

• Zhejiang Sci-Tech University, China

Bibliografia

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• 14. Li Y., Feng J., Hu J., et al. (2016): Research on entry water ricochet progress of a vehicle at small angle. Acta Armamentarii, 37(10), 1860-1871.
• 15. Chen G. M., Feng J. F., Hu J. H., et al. (2017): The influence of initial conditions of water-entry on ricochet phenomenon. Fluid Dynamics Research, 49(4), 045505.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).