直升机英语词汇-基础词汇和空气动力学部分

衍求g

二、直升机空气动力学

1、滑流理论

英文释义中文释义备注说明momentum theory滑流理论vertical flight垂直飞行

hover悬停

in descent/vertical descent/vertical climb 下降/上升induced power/velocity 诱导功率/速度outflow流出流

inflow 流入流disc 桨盘streamtube 流管线flow pattern 流型steady/unstead 上常/ 非定常

downwash/upwash 卜洗流/上洗流kinetic energy 动能compressibility effect 压缩性效应tip loss叶尖损失

2、叶素理论

Blade Element Theory/Elementary Blade Theory 叶素理论section shape 剖而inflow angle来流角airfoil翼型

blade incidence桨叶迎角lift slop升力线斜率blade span翼展(相对于旋翼而言) leading edge 前缘trailing edge 后缘

blade 桨叶沿半径从内向外分为三个部分：inboard. mid-spantip partsnon-uniform flow 非均匀来流

ideal twist儒氏旋翼blade mean lift coefficient平均升力系数与升力系数不是同一个槪念

三.前飞理论部分

英文释义中文释义备注说明

advance ratio 前进比advancing side 前行桨叶retreating side 后行桨叶

而求空- .tii-

flapping motion 挥舞运动flapping hinge挥舞较flapping coefficient挥舞系数region of reversed flow 反流区

Equilibrium Equation 力平衡方程Coriolis force/moment 哥氏力/哥氏力力矩interia

force/moments 惯性力

「estraining force 约束力gravitational force/moments 重力/力矩damping 阻尼mechanical damper 机械阻尼器

gyroscopic moment 陀螺力矩crosscoupli ng 交叉耦合oscillatory ben ding stress 振荡弯曲应力

roll moment 滚转力矩resultant force/moment 合力/合力矩A be communicated to B 力A传到B

lead-lag hinge 摆振较feathering hinge 变距较oncoming stream direction 迎流方向reference plane 参考面

separated flow 气流分离全称:retreating blade stallblade stalling 桨尖失速全称:advancing blade compressiblity drag

riseazimuth angle 方位角shock induced flow seperation 激波■气流分离stalling characteristic 失速特性

free stream dynamic pressure 自由来流动压boundary layer 附面层asymmetry/symmetry 不对称 / 对称

flow reversl气流反向horizontal tailplane水平安总而vertical fin垂直安定而

lateral/longitudinal cyclic coefficient 横向/纵向周期变距headwind 逆风tailwind 顺风四、性能计算部分：

英文释义中文释义备注说明

performanee assessment 性能评估helicopter performance calculation 直升机性能iI•算ground effect地而效应

autorotation 自转飞行high rate of climb 悬停升限wind tunnel test 风洞测试patrol/loiter task 巡航飞行

cruise speed 巡航速度weight capability 承重能力rate of climb 爬升率absolute ceiling绝对升限

service ceiling 实用升限optimum speed 最佳速度minimum rate of descent 最小卜降率

maximum edurance/loiter time 最大续航时间maximum glide distance 最大航行距离maximum range最大航行里程maximum speed最大速度specific range比航程dihedral action 上反作用

必mi任巴兮・陋卜工切、企-「|怎辿

longitudinal/lateral trim equation 纵向/横向配平方程shaft power 轴功率power requirement 需用功率

induced requirement 诱导功率stability 稳左性static stability 静稳龙dynamic stability动稳定

incidence disturbance 动稳左扰动的几种情况forward speed disturbance angular velocity disturbance

sideslip disturbanee yawing disturbance

stability augmentation system 增稳系统