摘要
针对YAK-141和F-35B两种不同推进系统构型的短距/垂直起降飞机,利用流场仿真软件,研究了双发布局短距/垂直起降飞机,分别采用升力发动机+转向喷管和升力风扇+转向喷管推进系统构型时,飞机短距/垂直起降工况下的外流气动特性,包括高温燃气回吸、地面效应和环境影响等。结果表明,升力风扇+转向喷管推进系统构型的短距/垂直起降飞机,在高温燃气回吸和环境影响等方面具有一定的优越性;不同推进系统构型的短距/垂直起降飞机,在短距/垂直起降时存在不同的喷泉流,其位置和气动特性对机身下表面的温度和压力分布有影响。
For YAK-141 and F-35B short/vertical take off landing(S/VTOL) aircraft with different propulsion configurations, flow field simulation software was used to study the external flow field aerodynamic characteristics of twin-engine S/VTOL aircraft with different propulsion systems of ‘lift engine + steering nozzle’ and ‘lift fan + steering nozzle’ under vertical take-off and landing conditions,including high temperature gas suction, ground effect and environmental impact. The results show that the S/VTOL aircraft of the ‘lift engine+steering nozzle’ propulsion system configuration has certain superiority in the aspects of high temperature gas suction and environmental impact;different propulsion configurations of S/VTOL has different fountain flow during vertical landing, and their position and aerodynamic characteristics have an impact on the temperature and pressure distributions on the lower surface of the fuselage.
作者
沈家立
廖华琳
何天喜
朱川
SHEN Jia-li;LIAO Hua-ling;HE Tian-xi;ZHU Chuan(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)
出处
《燃气涡轮试验与研究》
2022年第3期20-25,共6页
Gas Turbine Experiment and Research
关键词
短距/垂直起降飞机
推进系统
流场仿真
气动特性
高温燃气回吸
地面效应
环境影响
short/vertical take off landing(S/VTOL)aircraft
propulsion
flow field simulation
aerodynamiccharacteristics
high temperature gas suction
ground effect
environmental impact