阻拦索断裂对螺旋桨舰载机着舰安全影响数值分析

doi:10.7527/S1000-6893.2018.22293

Abstract

Abstract: If the arresting cable is broken during the arrest sliding of the jet-powered carrier aircraft, the probability of escape and re-flight of the carrier will be extremely small. As the aircraft has a large zero-liter resistance and a small push-weight ratio, its ability to safely re-flight is worth studying. A simulation model for the escape and return flight of the propeller carrier aircraft is built, including a working sub-model for the blocking cable, a sub-model for the engine dynamic response, a sub-model for elevator steering, and a sub-model for correction of the aerodynamic influence. The process of escape and re-flight of the E-2C shipborne early warning aircraft under the condition of vessel blocking cable fracture is numerically simulated. The dynamic changes of the amount of track sinking and the main motion parameters in the longitudinal dynamics equation for the carrier under different aerodynamic forces at different departure speed and with different steering surface control logic are obtained. The simulation results, together with the video data, are analyzed to get the reasons for successful re-flight of the carrier aircraft. The study shows that the influence of power on the pitch torque and lift of the propeller carrier aircraft is the key to its success of escape and re-flight. The power effect causes the plane's pitch moment curve to shift upward 0.15. The longitudinal static stability at the 8° angle of attack decreases by 85%, the slope of the lift line increases by 29.7%, and the maximum lift coefficient increases by 39%, demonstrating significant improvement of the agility of pitch control, efficiency of elevator control, and stall characteristics of the propeller aircraft during escape and re-flight. The power influence enables the propeller carrier aircraft to quickly change its track angle, reduce the sinking amount of the track, and ensure the safety of escape and re-flight.

Key words: propeller carrier aircraft, block cable crack, engine power effect, safety of escape re-flight, flight path sinking value

CLC Number:

ZHANG Shengwei, DUAN Zhuoyi, GENG Jianzhong, WANG Libo. Numerical analysis of the effect of block cable crack on landing safety of propeller carrier-based aircraft[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(4): 622293-622293.

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Numerical analysis of the effect of block cable crack on landing safety of propeller carrier-based aircraft

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