摘要
过渡走廊的准确描述对垂直起降固定翼无人机飞行过程具有重要意义。为研究垂直起降固定翼无人机的过渡飞行过程,扩大过渡飞行走廊包线,建立此类无人机的过渡走廊模型,从飞行力学角度基于机翼最大升力系数和系统可用功率对动力增升系统偏角—速度包线进行研究,分析无人机气动参数和功率参数对动力增升系统偏角—速度包线的影响;根据过渡走廊模型分析提出通过气动参数和功率参数扩大过渡走廊的方法;通过案例计算,求得过渡飞行走廊。结果表明:本文所建立的偏角—速度包线能够很好地描述此类垂直起降固定翼无人机的过渡飞行走廊,可用功率增加10%可以使过渡走廊扩大21.43%,而气动参数增加10%只能使过渡走廊扩大2.33%。
The accurate description of the transition corridor is important for vertical take-off and landing(VTOL)fixed-wing unmanned aerial vehicle(UAV)flight.In order to study the transitional flight process of VTOL fixedwing UAV,a transition corridor model of this type of UAV is established in this paper.From the perspective of flight dynamics,the deflection angle-speed envelope of the power system is studied by means of the maximum lift coefficient of the wing and the system available power limit.The influence of the overall parameters and energy parameters of the UAV on the deflection angle-speed envelope of the power system is analyzed,and a method to expand the transition corridor of the vertical take-off and landing fixed-wing UAV is proposed.Through case calculations,the transition flight corridor is obtained.The results show that the established deflection angle-speed envelope can perfectly describe the transition flight corridor of VTOL fixed-wing UAV,the 10%increasing of the available power can expand the transition corridor by 21.43%,while the 10%increasing of the aerodynamic parameters can only expand the transition corridor by 2.33%.
作者
王春阳
周洲
WANG Chunyang;ZHOU Zhou(School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《航空工程进展》
CSCD
2022年第1期42-50,共9页
Advances in Aeronautical Science and Engineering
基金
陕西省重点研发计划(2021ZDLGY09-08)
大院大所创新引领专项计划(TC2018DYDS24)
陕西省自然科学基金(2019JM-044)。
关键词
垂直起降固定翼
飞行包线
过渡走廊
可用功率
失速迎角
受力分析
vertical take-off and landing fixed-wing
flight envelope
transition corridor
available power
stall angle of attack
force analysis
