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    • 66. 发明申请
    • SHORT LANDING WARNING
    • 短路警告
    • US20150266590A1
    • 2015-09-24
    • US14218672
    • 2014-03-18
    • The Boeing Company
    • Mark Hall Henderson
    • B64D45/04
    • B64D45/04B64D45/08G05D1/0607G05D1/0653G05D1/0676G08G5/0047G08G5/04G08G5/045
    • A method can include determining that an aircraft is on approach to a runway. The method can include determining a flight path vector (FPV) location of the aircraft based at least in part on a projected landing location with respect to the runway and determining a current airspeed of the aircraft. The method can also include performing at least one of the following: issuing a landing short alert to a pilot of the aircraft if the FPV location is at or before the runway threshold, issuing an airspeed caution alert if the FPV location is between the runway threshold and the target runway location and if the current airspeed is below a landing short envelope, and determining not to issue an alert if the FPV location is between the runway threshold and the target runway location and if the current airspeed is at or above the landing short envelope.
    • 一种方法可以包括确定飞机正在接近跑道。 该方法可以包括至少部分地基于相对于跑道的预计着陆位置来确定飞行器的飞行路线向量(FPV)位置,并确定飞机的当前空速。 该方法还可以包括执行以下中的至少一个:如果FPV位置在跑道阈值之前或之前,向飞机的飞行员发出着陆短警报,如果FPV位置在跑道阈值之间,则发出空速警告警报 目标跑道位置以及当前空速是否低于着陆短信号,并且如果FPV位置在跑道阈值和目标跑道位置之间以及当前空速是否在着陆短路之上或之上,则确定不发出警报 信封。
    • 70. 发明授权
    • Reducing runway requirement for aircraft
    • 降低飞机的跑道要求
    • US07997528B2
    • 2011-08-16
    • US11653729
    • 2007-01-16
    • James D. Lang
    • James D. Lang
    • B64C19/00
    • B64C23/06B64C19/00G05D1/0653Y02T50/162
    • Runway length requirement for take-off and landing of an aircraft is reduced by taking advantage of dynamic lift overshoot, and in some cases, dynamic stall. In take-off and landing, the angle of attack is rapidly increased so that the lift coefficient exceeds the maximum predicted by the steady flow lift curve. By increasing the angle of attack at an appropriate rate, the increased lift coefficient can be maintained, without loss of control, until the aircraft touches down in the case of a landing, or until the aircraft can begin a normal climb, in the case of take-off. A low aspect ratio lifting body is preferred because of its more gradual stall behavior, and the potential to use dynamic stall for further deceleration before touchdown. Vortex fences can be oscillated to delay the onset of stall, and, in cruise, to energize the boundary-layer and reduce drag and/or control roll and/or yaw.
    • 通过利用动力升降过冲减少飞机起飞和降落的跑道长度要求,在某些情况下,动态停止。 起飞和着陆时,攻角迅速增加,使得升力系数超过稳定流量提升曲线预测的最大值。 通过以适当的速率增加迎角,可以保持增加的升力系数,而不会失控,直到在着陆的情况下飞机接触下来,或直到飞机开始正常爬升为止 脱掉。 低纵横比提升体是优选的,因为它具有更加缓慢的失速行为,以及在达阵之前使用动态失速进一步减速的可能性。 涡流围栏可以振荡以延迟失速的开始,并且在巡航中,激励边界层并减少拖动和/或控制滚动和/或偏航。