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Abstract:
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  1. Haque, A.U., Asrar, W., Sulaeman, E., Ali, J.S.M., Omar, A.A.
    MyJurnal
    All buoyant and hybrid buoyant aerial vehicles have directional stability issues at low speed. Electric
    trimmers are one of the potential solutions for controlling the yaw motion of such vehicles in which
    partial lift is obtained from the wings. However, available propeller disk area of such trimmers is limited
    due to small surface area of the vertical tail. In the present work, maximum input power required by thin
    electric propellers with different pitch values are compared to obtain an optimised value of pitch for
    propeller selection. Analytical as well as computational techniques are employed to evaluate the moment
    generated by tangential thrust produced by a ducted propeller. Motocalc® software under predicts the
    thrust value when compared with the computational results under the same flow conditions. The estimated
    yaw force produced by the propeller is quite significant and it can also be used for creating differential
    thrust using twin electric motors.
  2. Ul-Haque A, Asrar W, Omar AA, Sulaeman E, Mohamed Ali JS
    J Exp Biol, 2015 Apr 15;218(Pt 8):1270-1.
    PMID: 25911735 DOI: 10.1242/jeb.117556
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