Pressure measurements on a square prism using a digital pressure scanning system

摘要

A new digital pressure scanning system has been developed and used to obtain pressure data on a 2D square prism with leading edge flaps. Experiments were performed with angles of attack between -5°and +5°The component of pressure fluctuation that was caused by the motion of the leading edge flaps was extracted from the fluctuating pressures. It has been demonstrated that within this range of angles of attack, the pressure fluctuations due to the flap motion can be predicted as a function of the flap operating frequency, amplitude, and the angle of attack, and hence the overall load can be evaluated.