Dynamic response of rigid pavement under variable - speed moving load caused by vehicle accelerating and decelerating and airplane landing are analyzed.

分析了行驶车辆加速、减速及飞机起降过程中变速移动荷载所引起的刚性路面的动力响应。

youdao

This paper deals with the problems of the optimal control of the airplane landing in presence of atmospheric turbulence with application of the theory and methods of random optimal control.

论述了应用随机最优控制理论的基本原理和方法，解决飞机在大气紊流中着陆的控制问题。

youdao

He proceeded to talk to me about the mechanics of an airplane and what would happen in a crash landing with inoperative wheels.

他进而又开始对我说起飞机的机械学原理，以及在转轮无法正常运作的情况下强行着陆会发生什么。

youdao

Novel features included a composite fiberglass airframe, a glass-panel cockpit and a parachute designed to float the airplane to a safe landing in an emergency.

FORBES: The iPhone Of Aviation

By early 2014, passengers may be able to use certain electronic devices in airplane mode during takeoff and landing, according to a New York Times report.

ENGADGET

The Osprey, readers of this space will recall, is a remarkable "tilt-rotor" airplane, capable of taking off and landing vertically but able to rotate its turboprop engines in flight so as to fly like a conventional aircraft.

CENTERFORSECURITYPOLICY: Peace dividend on wings of the Osprey