摘要
通过仿真计算,分析了各主要机舰参数的变化对滑跃起飞安全性的影响;计算出满足起飞安全准则的主要机舰参数的适配值集合,并总结了适配规律.研究结果表明:飞机起飞质量是滑跃起飞过程中航迹下沉的主要影响因素,增大升降舵预置偏角和滑橇板出口角均可抑制航迹下沉;升降舵预置影响飞行迎角,预置偏角过大会导致飞机失速;滑橇板出口角影响俯仰角速度,当出口角为12°时,俯仰角速度的峰值最小;在适配值集合内,随着飞机起飞质量的逐渐增加,由升降舵预置偏角与滑橇板出口角组成的适配范围逐渐缩小.因此,为了保证滑跃起飞的安全,对于确定的构型和起飞甲板,需要合理地确定舰载机的最大起飞质量.
The influence of primary aircraft-ramp parameters on ski-jump takeoff safety was analyzed by numerical simulation. The match set of primary parameters that satisfy the takeoff safety criteria was computed and the match law was summarized. The results indicate that the takeoff mass is the primary effect factor of flight path descent. Enhancing preset elevator angle and ramp angle can help to decrease the flight path descent. The preset elevator angle influences the attack angle. Too large preset elevator angle would lead to stall. The ramp angle influences the pitch rate, which attains its peak value when ramp angle is 12°. Within the boundary of the match set, the range confined by preset elevator angle and ramp exit angle decreases with the increase of takeoff mass.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2011年第6期644-648,653,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
航空科学基金资助项目(20081751026)
关键词
舰载机
滑跃起飞
总体设计
参数适配
carrier-based aircraft
ski-jump takeoff
conceptual design
parameter match
