Because wake vortices can persist in calm air for several minutes (extending for as far as eight miles), the Federal Aviation Administration requires minimum distances between aircraft, based on size.
Because wake vortices can persist in calm air for several minutes (extending for as far as eight miles), the Federal Aviation Administration requires minimum distances between aircraft, based on size.
机尾涡流可以在无风的空气中停留几分钟，向后延伸达12公里，所以美国联邦航空总署按照飞机大小而规定了飞机之间的最小安全距离。