Abstract The trailing edge deformable wing is one of the main development directions future aircraft design. technology active camber can significantly improve aerodynamic performance aircraft. In this paper, motor drives parabolic crankshaft and distributed flexible skin wing, which realize deflection at a large angle 0~30 degrees. At same time, surface continuous smooth. Moreover, simulation ...

This experimental study investigates the effect of biologically inspired finlets on reduction trailing-edge noise a NACA 0012 airfoil. At chord-based Reynolds number 400,000, far...

The present study experimentally investigates the effective reduction of wake-aerofoil interaction noise in a tandem aerofoil configuration using trailing-edge sawtooth serrations. far-field results clearly show that at ‘head-on’ wake impingement, use serrations on front can lead to substantial approximately 10 dB without any noticeable increase other frequencies and changes directivity pattern...

Three model problems were examined to assess the diiculties involved in using a hybrid scheme coupling ow computation with the the Ffowcs Williams and Hawkings equation to predict noise generated by v ortices passing over a sharp edge. The results indicate that the Ffowcs Williams and Hawkings equation correctly propagates the acoustic signals when provided with accurate ow information on the i...