Lift force for cylindrical and elliptical Coandă aircraft design

  • Authors

    • Mohd Faisal Abdul Hamid
    • Azmin Shakrine Mohd Rafie
    • Ezanee Gires
    • Abd. Rahim Abu Talib
    2018-10-09
    https://doi.org/10.14419/ijet.v7i4.13.21345
  • Coandă effect, flow control, aircraft design, aerodynamic lift, jet momentum.

  • Abstract

    Small aerial vehicles possess advantages in terms of size and accessibility in performing a variety of tasks. Presently, their design and performance is dependent on variations of conventional aerodynamic configurations (fixed- and rotary-wing). A disadvantage for these configurations is the aerodynamic potential between the mainstream airflow and the body surfaces are not fully utilized. To solve this issue, the Coandă effect is proposed whereby a high-velocity jet is blown tangentially over a curved surface to increase circulation and lift. Prior to the costly approach (experimental and numerical), an analytical formulation (via control volume analysis) to predict the aerodynamic Coandă lift force of the design concept is developed. This is an extended version of the existing mathematical formulations, capturing viscous flow effects. It is also pertinent for circular and elliptical-shaped designs. The results obtained show that the total lift force is dependent on the jet velocity, outflow angle, dimensions of the jet slot, the projected surface area, and the viscous effect. The approach has demonstrated how this modelling technique is effective in calculating the lift force for cylindrical and elliptical Coandă aircraft design.

     

     

     

  • References

    1. [1] Xu G & Sankar LN (2000), Computational study of horizontal axis wind turbines. UASME Journal of Solar Energy Engineering 122(1), 35-39

      [2] Tongchitpakdee C, Benjanirat S & Sankar LN (2006), Numerical studies of the effects of active and passive circulation enhancement concepts on wind turbine performance. Journal of Solar Energy Engineering, Transactions of the ASME 128, 432-444

      [3] Englar RJ, Smith MJ, Kelley SM & Rover RC (1994), Application of circulation control to advanced subsonic transport aircraft, Part I: Airfoil development. Journal of Aircraft 31(5), 1160-1168

      [4] Faisal AHM & Filippone A (2016), Aerodynamic model for tandem flapping wings. AIAA Journal 54(12), 3849-3858

      [5] Englar RJ, Smith MJ, Kelley SM & Rover RC (1994), Application of circulation control to advanced subsonic transport aircraft, Part II: Transport application. Journal of Aircraft 31(5), 1169-1177

      [6] Liu Y, Sankar LN, Englar R & Ahuja K (2001), Numerical simulations of the steady and unsteady aerodynamic characteristics of a circulation control wing. AIAA 2001-0704, 39th AIAA Aerospace Sciences Meeting

      [7] Faisal AHM & Filippone A (2016), Aerodynamic model for insect flapping wings with induced flow effect. Journal of Aircraft 53(3), 701-712

      [8] Schroijen M & van Tooren M (2009), MAV propulsion system using the Coandă effect. AIAA/ASAME/SAE/ASEE. Exhibit, Joint Propulsion Conference

      [9] Shojaefard MH, Noorpoor AR, Avanesians A & Ghaffarpour M (2005), Numerical investigation of flow control by suction and injection on a subsonic airfoil. American Journal of Applied Sciences 2(10), 1474 – 1480

      [10] Djojodihardjo H & Abdul Hamid MF (2013), Overviews of Coandă jet lift enhancement and computational studies. ASEAN Eng. J. 3(1), 39-57

      [11] Djojodihardjo H, Abdul Hamid MF, Basri S, Romli FI & Abdul Majid DLA (2011), Numerical simulation and analysis of Coandă effect circulation control for wind turbine application considerations. IIUM Engineering Journal 12(3)

      [12] Abdul Hamid MF, Gires E, Harithuddin ASM, Abu Talib AR, Rafie ASM, Romli FI & Harmin MY (2017), Coandă configured aircraft: A preliminary analytical assessment. IOP Conf. Series: Materials Science and Engineering 270, 012004

      [13] Ahmed RI, Abu Talib AR, Mohd Rafie AS & Djojodihardjo H (2017), Aerodynamics and flight mechanics of MAV based on Coandă effect. Aerospace Sci. and Tech. 62, 136-147

      [14] Froude RE (1889), On the part played in propulsion by differences of fluid pressure. Trans. Inst. Naval Architects 30, 390

      [15] Batchelor GK (1967), An Introduction to Fluid Dynamics. Cambridge University Press

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  • How to Cite

    Faisal Abdul Hamid, M., Shakrine Mohd Rafie, A., Gires, E., & Rahim Abu Talib, A. (2018). Lift force for cylindrical and elliptical Coandă aircraft design. International Journal of Engineering & Technology, 7(4.13), 137-140. https://doi.org/10.14419/ijet.v7i4.13.21345

    Received date: 2018-10-09

    Accepted date: 2018-10-09

    Published date: 2018-10-09