Pettit and his colleague Paul Strefling, sitting in the pilot’s seat between us, are engineers in the business of ride quality. Their job is to program the movable parts on an airplane’s tail and wings—the rudder, elevators, and nearly two dozen ailerons, flaperons, and spoilers—to smooth out its flight automatically when turbulence hits. To get data for the simulator, their team takes full-size Boeing jets on research flights over the Rocky Mountains. They hunt for rough air, then loop through it again and again, like race-car drivers on a test track. They record every flutter and quake using the plane’s sensors, then download them to the simulator’s computers. The flight deck we were in could be swapped with one from a 737 or a 787, and the turbulence reprogrammed for the size and shape of those planes. Then, with the flip of a switch in the control room next door, the cab would start to shake and roll on its piston legs, as if having a seizure.
Opens in a new window，这一点在safew官方下载中也有详细论述
Овечкин продлил безголевую серию в составе Вашингтона09:40。业内人士推荐爱思助手下载最新版本作为进阶阅读
Утром 28 февраля Израиль нанес удар по Ирану и назвал его «превентивным». По данным The New York Times, США также причастны к ударам по Тегерану. В свою очередь, телеканал Al Jazeera заявляет, что атаки США и Израиля направлены на подрыв системы безопасности Исламской Республики.