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Animal Review

March 2016, Volume 3, 1, pp 1-9

Hydrostatic and Hydrodynamic Characteristics of Swimming Animals- an Inspiration for Hybrid Buoyant Aircraft

Anwar Ul Haque


Waqar Asrar


Ashraf Ali Omar


Erwin Sulaeman


Jaffar Syed Mohamed Ali

Anwar Ul Haque 1 ,

Waqar Asrar 1 Ashraf Ali Omar 3
Erwin Sulaeman 1 Jaffar Syed Mohamed Ali 1 
  1. Department of Mechanical Engineering, International Islamic University Malaysia (IIUM), Kuala Lumpur, Malaysia 1

  2. Department of Aeronautical Engineering, University of Tripoli, Tripoli, Libya 3

Pages: 1-9

DOI: 10.18488/

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In today’s world, the biological sciences are mostly considered separate from the existing modern knowledge of various other fields of sciences and engineering; however, there are many properties of nature and known facts of biological sciences that can be proved in the other domains of science and technology as well. Correlation of the geometric and buoyant properties of the swimming animals with the hybrid buoyant aerial vehicles is an example of this hypothesis. In the present work, some experiments related to the geometric parameters of a California sea lion were carried out. It was found that the fineness ratio of this animal is of the same order as the optimum value of that for the condition of minimum drag and power required for the buoyant aerial vehicle. The role of multiple fins on the elongated bodies of shark is also discussed in its application for yaw stability as well as to shroud the antennas that are used in the aircraft for various communication systems.

Contribution/ Originality
The paper's primary contribution is to show that the hydrodynamic and a few geometric parameters of a California Sea Lion resemble to that of the well-known facts of buoyant and hybrid buoyant aerial vehicles.




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