Saijal K. K. and  K. Prabhakaran Nair,  Optimal Trailing Edge Flap Positions of Helicopter Rotor for Various Thrust Coefficients to Solidity (Ct/σ) Ratios.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 84(12). 2599 - 2602
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9996997.