power-on condition
发动机工作时的飞行状态
power-off condition
发动机不工作时的飞行状态
DYNAMICS OF A MANEUVERING ROTOR IN CONSTANT ACCELERATION AND DECELERATION
飞行器机动飞行时发动机转子等变速运动的动力学特性研究
The engine of the airplane stopped, and the pilot sweated blood as he glided to a safe landing.
飞机发动机出了故障，飞行员在作安全安着落滑行时，心里紧张极了。
How do you get yourself motivated during long haul flt?
飞行人员在长途机上怎样激发自己的工作态度?
Air breathing reaction motors used the fuel stored within the aircraft.
反作用空气发动机使用贮存于飞行器中的燃料。
General dynamic model of aeroengine's rotor system during maneuvering flight
机动飞行时发动机转子系统动力学统一模型
Note： A" roll" while flying sideways can be thought of in two different way.
注意：当直升机保持横向飞行时，有二种不同的方式执行"侧滚"的动作。
Note∶A "roll" while flying sideways can be thought of in two different way.
注意∶当直升机保持横向飞行时，有二种不同的方式执行"侧滚"的动作。
Four-stage-engine Operation
四行程发动机工作过程
Two-stage-engine Operation
二行程发动机工作过程
and there were no engines light enough at that time to provide the power to lift a helicopter and its pilot off the ground.
而且当时也没有那么轻的发动机提供动力把沉重的直升飞机和飞行员提升起来脱离地面。
After the crash, all planes is grounded until their engine is inspect.
飞行事故发生后，所有的飞机在接受发动机检查前均被禁止起飞。
Any of various winged vehicles capable of flight, generally heavier than air and driven by jet engines or propellers.
飞机各种能够飞行的带翼交通工具，通常比空气重，用喷气式发动机或螺旋桨驱动
There is only one working stroke in four so a flywheel is needed to drive the crankshaft during the time that the engine is performing the non-power strokes.
因为4个工作冲程中只有一个冲程作功，所以发动机处于非作功冲程时，飞轮带动曲轴旋转。
the act of passengers and crew getting off of a ship or aircraft.
乘客和工作人员下船或飞机的行为。
the act of passengers and crew getting aboard a ship or aircraft.
乘客和工作人员上船或飞机的行为。
There was a sudden whir as the airplane started its engines.
飞机的发动机起动时，立即发出呼呼的声响。
