Yawing force of electric trimmers of a hybrid buoyant aerial vehicle

UlHaque, Anwar and Asrar, Waqar and Omar, Ashraf Ali and Sulaeman, Erwin and Ali, JS Mohamed (2017) Yawing force of electric trimmers of a hybrid buoyant aerial vehicle. Pertanika J Sci and tech, 25 (1). pp. 293-302. ISSN 0128-7680 E-ISSN 2231-8526

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Abstract

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.

Item Type:	Article (Journal)
Additional Information:	4277/55582
Uncontrolled Keywords:	Advance Ratio, Computational Fluid Dynamics, Hybrid Buoyant Aerial Vehicle, Static Thrust, Turning, Thin Electric Propeller
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Waqar Asrar
Date Deposited:	05 Apr 2017 09:00
Last Modified:	05 Jun 2017 09:35
URI:	http://irep.iium.edu.my/id/eprint/55582

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