They are now testing the arrangement to work out how much power is needed to keep the craft aloft during the transition to autorotation , and during flaring .
Keeping two aircraft armed with nuclear-tipped cruise missiles permanently aloft would be expensive and carry a significant danger of nuclear accident .
可以在空中始终保持两架装备有核巡航导弹的飞机,但这样做花费巨大,而且容易发生核事故。
A couple of months later , on a lufthansa flight to munich , there was such a sound-and-light show as our little airbus weaved in and out of the cumulonimbus clouds that again it was a miracle that the plane managed to stay aloft .