An airplane caught in turbulence moves both as a whole body and as a flexible structure, Pettit said: “It’s sort of mind-blowing, the number of ways an airplane can bend and twist.” To compensate for all that jouncing and twisting, the flight-control software uses the plane’s sensors to calculate the force and direction of the wind. Then it moves the flaps on the wings and tail to counteract the pressure. “Say the airplane is bending like a yardstick,” Pettit said. “The elevator”—the horizontal flap on the tail—“can move to oppose that. Or the rudder will stop it from moving side to side.” If the plane heaves up, the spoilers can press it back down. If it drops, the wing flaps can lift it up. If it starts to roll, the ailerons can right the ship.
anadim (@dimitrispapail)，推荐阅读下载安装汽水音乐获取更多信息
。业内人士推荐体育直播作为进阶阅读
There were 78 minutes on the clock when the travelling support got wind of Nottingham Forest’s equaliser at Manchester City. How they belted out their anthems at that point – about previous title-winning glories – and when it was all over, there was plenty more from them.。业内人士推荐搜狗输入法2026作为进阶阅读
If there’s one takeaway from the N.T.S.B. statistics, it’s this: flight attendants are in a hazardous business. When planes hit turbulence, the pilots and passengers are usually in their seats. The flight attendants are often still on their feet. They get nearly eighty per cent of the serious injuries caused by turbulence, and, for every one of those injuries, a 2001 study found, another seventy flight attendants get minor injuries. Nearly a third of the time, they have no idea the turbulence is coming.