Once airborne, the vertical descent path of the package would be controlled using one or more "control surfaces" - which could consist of wings, parachutes, or compressed air canisters.
一旦进行空运，包裹的垂直降落轨道将由一个或多个“操纵面”进行控制，包括机翼、降落伞或压缩的空气罐。
The vertical flight profile was assumed to have three flight segments climb, cruise and descent.
飞机纵向飞行剖面被假定分为三个飞行段：爬升、巡航和下降；
The Blender, or Panic maneuver is a vertical diving roll that virtually stops its descent as it instantaneously enters into a flat spin.
搅拌器，也叫“恐慌”，的动作指的是带着横滚的垂直俯冲，然后马上接能够保持高度不变的水平自旋。
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