UAV
Unmanned Aerial Vehicle
abbr. 无人机
例句1：
In surveillance, the Company provides complete UAV solutions and has more than 60 years of experience inthis field.
例句2：
Up until now, the Army has insisted that UAV operators need to be in theater to be fully responsiveto what is happening on the ground.
Fig.1 UAV 无人机
Airworthiness
n. [航] 适航性；耐飞性
例句1：
That is much like flying experimental planes overcrowded cities to test their airworthiness.
例句2：
The components have already been developed and arecurrently going through the airworthiness qualification and certification process.
Fig.2 Airworthiness 适航性
Payload
n. （导弹、火箭等的）有效载荷，有效负荷；
例句1：
The helicopter is designed to carry a payload of 2,640 pounds.
例句2：
Nasa is hoping the payload inside Endeavour for its final mission will deliver equally astonishingscience.
Fig.3 Payload 有效载荷
Trajectory
n. [物] 轨道，轨线；[航][军] 弹道
例句1：
The direction is tangent to the trajectory.
例句2：
Experimental results demonstrate the effectiveness of the approach to trajectory analysis.
Fig.4 Trajectory 弹道
Stall
n. [航] 失速，停转
v. 把牲畜关进畜舍；使…熄火；停顿（stall的ing形式）
n. (Stalling)人名；(德)施塔林；(英)斯托林
例句1：
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases.
例句2：
A stall does not mean that the engine(s) have stopped working, or that the aircraft has stopped moving—the effect is the same even in an unpowered glider aircraft.
Fig.5 Stall 失速
Jettison
v. [航] 掷荷；投下
例句1：
In case of accidents, the escape tower will jettison with the spacecraft, bringing the astronauts tosafety.
例句2：
Once within closing distance of enemy starfighters, the tri-fighter would jettison its booster and continue with an accelerated attack.
Fig.6 Jettison 掷荷
Powerplant
n. 发动机；动力装置；发电站
例句1：
An aircraft propulsion powerplant for use in an aircraft includes one or more core engines housed in an airframe of the aircraft, one or more secondary propulsion units.
例句2：
This specification covers minimum requirements for the installation and integration of powerplant system units.
Fig.7 Powerplant 动力装置
Rudder
n. 船舵；飞机方向舵
n. (Rudder)人名；(德、西)鲁德尔
例句1：
On an aircraft, the rudder is a directional control surface along with the rudder-like elevator.
例句2：
The rudder is usually attached to the fin (or vertical stabilizer), which allows the pilot to control yaw about the vertical axis.
Fig.8 Rudder 方向舵
Turbojet
n. 涡轮喷气(飞机、发动机)
例句1：
Making its first flight on 18 October 1966, the KM was powered by a whopping 10 turbojet engines and weighed up to 540 tons.
例句2：
Propulsion on theearly models of the KC-135 was supplied by four Pratt & Whitney turbojet engines.
Fig.9 Turbojet 涡轮喷气
Propeller
n. [航][船] 螺旋桨；推进器
例句1：
The propeller blade has been mounted.
例句2：
Opened in 1928, the plane simply rotates in a circle powered only by its noisy propeller.
Fig.10 Propeller 涡轮喷气
参考文献
[1] UAV Systems Airworthiness Requirements (USAR) for North Atlantic Treaty Organization (NATO) Military UAVSystems. draft STANAG 4671. Edition 1 – March 22nd, 2007.
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