公开(公告)号：US5051910A

公开(公告)日：1991-09-24

申请号：US422340

申请日：1989-10-16

Applicant: Sam P. Liden

Inventor： Sam P. Liden

IPC: G05D1/00 ,  G05D1/02

CPC classification number: G05D1/0202 ,  G05D1/0005

Abstract: In a flight management system (FMS) of an aircraft, there is included a speed generator that outputs a speed command for the aircraft in accordance with a preselected mode. The FMS further includes an apparatus performing a method for adjusting the speed to achieve a desired arrival time. The apparatus comprises a unit for generating a speed adjustment coefficient (KSA), a unit for calculating wind forecast error, and a unit for adjusting the command speed outputted from the speed generator. The adjusting unit utilizes the KSA, actual wind speed at the current aircraft position, and wind forecast error at the aircraft position. The speed adjustment compensates for the error in the wind forecast, in order to achieve the desired arrival-time.

Abstract translation: 在飞机的飞行管理系统（FMS）中，包括速度发生器，其根据预选模式输出飞行器的速度命令。 FMS还包括执行用于调整速度以实现期望的到达时间的方法的装置。 该装置包括用于产生速度调节系数（KSA）的单元，用于计算风力预报误差的单元和用于调节从速度发生器输出的命令速度的单元。 调整单元利用KSA，当前飞机位置的实际风速，以及飞机位置的风力预报误差。 速度调整补偿了风预报中的误差，以达到理想的到达时间。

公开(公告)号：US5739770A

公开(公告)日：1998-04-14

申请号：US586264

申请日：1996-01-16

Applicant: Sam P. Liden

Inventor： Sam P. Liden

IPC: G05D1/06 ,  G08G5/02 ,  G01C21/00

CPC classification number: G08G5/0052 ,  G05D1/0676 ,  G08G5/025

Abstract: A method for providing off-path guidance during a descent comprises the steps of determining a current altitude (H) and a corresponding current horizontal distance (X) of the aircraft from a selected bottom of descent point (B/D). A simulation of a Basic Descent Path (BDP) is performed, and a plurality of corresponding altitude (H.sub.i) and horizontal distance (X.sub.i) points is stored in a BDP array. A horizontal distance (X.sub.B) is determined from the B/D point to a bottom point of the BDP array, and a horizontal distance (X.sub.A) is determined in the BDP array that corresponds to the current aircraft altitude. A radius of a BDP circle is obtained by subtracting X.sub.B from X.sub.A for display on a navigation display unit. An aircraft symbol is displayed on the Navigation Display unit at a distance proportional to X.sub.A, thereby indicating the distance remaining until to start of descent of the aircraft.

Abstract translation: 用于在下降期间提供越野引导的方法包括以下步骤：从选定的下降点（B / D）确定飞行器的当前高度（H）和对应的当前水平距离（X）。 执行基本下降路径（BDP）的模拟，并且将多个相应的高度（Hi）和水平距离（Xi）点存储在BDP阵列中。 从B / D点到BDP阵列的底点确定水平距离（XB），并且在与当前航空器高度对应的BDP阵列中确定水平距离（XA）。 通过从XA中减去XB以在导航显示单元上显示来获得BDP圆的半径。 飞行器符号以与XA成比例的距离显示在导航显示单元上，从而指示飞机开始下降之前剩余的距离。

公开(公告)号：US5574647A

公开(公告)日：1996-11-12

申请号：US131069

申请日：1993-10-04

Applicant: Sam P. Liden

Inventor： Sam P. Liden

IPC: G05D1/06 ,  G06F165/00 ,  G06F15/00 ,  G06F17/00

CPC classification number: G05D1/0615 ,  G05D1/0005

Abstract: An apparatus and method for determining the best legal flight altitudes, and the best points at which to change to a new legal flight altitude, such that the cost of the flight is minimized, but subject to filtering to prevent excessive changes in altitude.

Abstract translation: 用于确定最佳合法飞行高度的装置和方法，以及改变为新的合法飞行高度的最佳点，使得飞行成本最小化，但需要过滤以防止高度的过度变化。

公开(公告)号：US4760530A

公开(公告)日：1988-07-26

申请号：US875115

申请日：1986-06-17

Applicant: Sam P. Liden

Inventor： Sam P. Liden

IPC: B64C13/18 ,  G05D1/00 ,  G06F19/00 ,  G06F15/50

CPC classification number: G05D1/0005

Abstract: A flight management system that provides an airspeed command to control a flight profile pursuant to minimum total cost. Total cost is the sum of direct operating cost and arrival time error cost and direct operating cost is the sum of fuel cost plus flight-time cost. A predictor, in response to trial cost index values, generates direct operating cost and arrival time values corresponding to the trial cost index values. A parabolic function approximator generates a parabolic approximation to the direct operating cost vs. arrival time function corresponding to the trial cost index values. An arrival error cost function is added to the direct operating cost function and the minimum of the combined function is obtained to provide an optimum arrival time signal. The trial cost index values and the corresponding arrival time values are applied to a parabolic approximator to obtain a cost index vs. arrival time function. The optimum arrival time signal is applied to this function to provide the optimum cost index signal corresponding thereto. A speed generator is included for generating an airspeed signal corresponding to the optimum cost index signal in accordance with minimum direct operating cost. A predictor generates a predicted arrival time signal in accordance with the optimum cost index signal. A speed adjuster adjusts the airspeed signal to provide the airspeed command signal in accordance with the difference between the optimum arrival time signal and the predicted arrival time signal.

Abstract translation: 飞行管理系统，提供空速命令，以根据最低总成本控制飞行档案。 总成本是直接运营成本和到达时间误差成本的总和，直接运营成本是燃料成本加上飞行时间成本的总和。 预测器响应于试验成本指数值，生成对应于试验成本指数值的直接运营成本和到达时间值。 抛物线函数近似器产生对应于试验成本指数值的直接操作成本与到达时间函数的抛物线近似。 到达误差成本函数被添加到直接操作成本函数中，并且获得组合函数的最小值以提供最佳到达时间信号。 将试验成本指数值和相应的到达时间值应用于抛物线近似器以获得成本指数与到达时间函数。 最佳到达时间信号被应用于该功能以提供对应于其的最佳成本指数信号。 包括速度发生器，用于根据最小直接操作成本产生对应于最佳成本指数信号的空速信号。 预测器根据最佳成本指数信号产生预测到达时间信号。 速度调节器调节空速信号，以根据最佳到达时间信号和预测到达时间信号之间的差来提供空速命令信号。