飞行器

• It should be pointed out that some launch vehicles or missiles are usually unstable .
  应该指出，某些发射飞行器或导弹总是不稳定的。
• Pitch-yaw coupling can be neglected only for nearly axisymmetric vehicles .
  只有对接近于轴对称的飞行器，俯仰与偏航的耦合才能略去。
• A wind-loaded, bent vehicle will tend to snap straight at the instant of release .
  在释放的瞬间，受风载向弯曲的飞行器企图猛然变直。
• The significance of wind disturbances increases generally with increasing vehicle size .
  风的影响的重要性一般随飞行器尺寸的增加而增加。
• The rocket ship is divided into two parts, the payload part and the fuel-exhaust part .
  把火箭飞行器分为两部分：有效负载部分和燃料排出部分。
• This system, depicted in figure 1-8, is usually referred to as the apollo spacecraft .
  通常所谓的“阿波罗”空间飞行器，其系统如图1-8所示。
• The updated saturn i, formerly called the saturn ib, is an improved version of the vehicle .
  改进的“土星I”从前称为“土星IB”，是一个改进型飞行器。
• This includes both the fundamental bending characteristics of the airframes and the propellant dynamics .
  这包括飞行器结构的基本弯曲特性和推进剂动力学。
• The bird is usually lowered through a trap door in the floor of the cabin after the takeoff .
  飞行器通常都是在起飞以后通过座舱底部的一个活动门放下去的。
• The tank location for these vehicles is chosen for optimum airframe design for axial loads .
  这些飞行器上的油箱位置是相对轴向载荷作最佳结构设计来选择的。