Numerical Simulation of Lenticular Aircraft during Water-skipping
Exploration of the motion and free water surface characteristics of the trans-media aircraft during the water skipping is of significant reference value for the research on the water landing and skipping re-flight problems. The motion and free water surface characteristics of trans-media aircraft during water-skipping are simulated based on the meshless particle method. The effects of different spin velocities, water-entry velocities and water-entry angles on the water-skipping of lenticular aircraft are studied based on the comparison with the experimental values. It is shown that the spin velocity is crucial to keep the smooth water-skipping for lenticular aircraft. The Magnus effect due to the spin velocity causes the lateral motion of lenticular aircraft. Water-skipping process generally includes three stages:stable fall, impact to water and skipping to smooth flight. The free water surface breakage and water burst phenomenon are caused by the impact from the aircraft. During the water skipping, the velocity decay rate and the impact load are less affected by the spin velocity, but mainly by the entry-water velocity and the entry-water angle. The larger the entry-water angle and entry-water velocity is, the greater the velocity decay rate and the impact load are.
lenticular aircraftwater-skippingmeshless particle methodtrans-mediafree water surface breakage
万方数据
维普
