![]() ![]() On the other hand, for flight condition that requires cruise angle of attack that exceeds 4°, higher number of notches at higher notch depth had the best aerodynamic performance. For flight condition that does not exceed 4° angle of attack, lower number of notches at higher notch depth had the best aerodynamic performance. Analysis of the results from case studies shows that generally the effect of varying the number of notches only had significant effect on drag reduction if the notch depth was higher. The experimental setup and calibration of TWT were verified and further case studies on nonconventional wing model featuring trailing edge notches were carried out. c is the speed of sound in the medium, which in air varies with the square root of the thermodynamic temperature. Quite simply, subsonic ammunition is any cartridge that propels its projectile at a velocity that is below the speed of soundapproximately 1100 fps depending on atmospheric conditions and elevation. Featuring a 38-grain projectile that leaves the muzzle at 1,041 fps, Subsonic is also fast enough to allow it to run in a semiauto without issue. ![]() Experimental lift coefficient shows similar values with the analytical results but experimental drag coefficient had an average difference of 44%. Analytical method based on DATCOM was used to calculate the lift and drag coefficients of non-conventional cranked wing for comparison with experimental results obtained experimentally using Taylor’s wind tunnel (TWT). This research was conducted to examine the lift and drag of non-conventional wings at low subsonic speed and low angle of attack. This provides opportunity to continue research on non-conventional configurations that can greatly saves the fuel consumption. If the non-conventional wing only improves the aerodynamic performance by a small margin, conventional wing is still a better option for airline operators. * Corresponding author: non-conventional wing development shows potential in increasing the aerodynamic performance of airplanes. The approaching air will 'sense' what is coming and behave much like in subsonic flow. What does that mean If the leading edge is within the Mach cone emanating from the tip of the wing, it is called subsonic. School of Engineering, Faculty of Built Environment, Engineering, Technology & Design, Taylor’s University, Subang Jaya, Selangor DE, Malaysia For swept wings it is essential whether the leading edge is sub- or supersonic. Proceedings, Conference on High-Speed Aeronautics, Polytechnic. Abdulkareem Shafiq Mahdi Al-Obaidi * and Ting Chern Wei L.: Transition from Laminar to Turbulent Flow at Subsonic and Supersonic Speeds. ![]()
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