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    • 34. 发明授权
    • AIRCRAFT TAILSTRIKE AVOIDANCE SYSTEM
    • 系统以防止飞机坠毁REAR
    • EP1235712B1
    • 2007-01-31
    • EP00992006.7
    • 2000-11-30
    • The Boeing Company
    • DEWITT, Wendi, M.EGGOLD, David, P.EVANS, Monte, R.SANKRITHI, Mithra, M., K., V.WELLS, Stephen, L.
    • G05D1/06
    • G05D1/0808B64C13/503B64D45/04G05D1/0653
    • An improvement to an aircraft flight control system is provided for reducing the likelihood of an aircraft tailstrike. The flight control system includes a pitch command provided to a pitch control device for altering the aircraft's pitch attitute. The improvement is a system of altering the pitch command to avoid an aircraft tailstrike. The improvement includes determining a current tailskid closure rate and a current tail height; comparing the current tailskid closure rate with a threshold closure rate to determine an excess closure rate amount; and adding an incremental nose-down pitch command with the pitch command to avoid a potential aircraft tailstrike. The threshold closure rate is dependent upon the current tailskid height. The incremental nose-down pitch command is calculated as a function of the excess closure rate amount. An alternative embodiment is provided in which the current height is compared with a threshold height (that is a function of the current tailskid closure rate) to determine an excess height amount. The excess height is then used to form an incremental nose-down pitch command. Another embodiment is described using both height and rate thresholds to calculate the incremental nose-down pitch command. Alternative arrangements may be used in which other non-derivative and derivative values are used, e.g., pitch angle margin and pitch rate.
    • 36. 发明公开
    • Takeoff/landing touchdown protection management system
    • 起飞/着陆触地保护管理系统
    • EP2672357A1
    • 2013-12-11
    • EP12178520.8
    • 2012-07-30
    • Bell Helicopter Textron Inc.
    • Shue, Shyhpyng Jack
    • G05D1/06G05D1/08
    • B64C13/04B64C13/16B64C13/503B64C25/001B64C25/34B64C27/57B64C2025/325B64D45/00G05D1/0653G05D1/0669G05D1/0676G05D1/0858
    • An air/ground contact logic management system (101) for use with fly-by-wire control systems in an aircraft (11). The system (101) includes a first sensor (127) configured to provide an output signal to determine when the aircraft (11) is in a transition region. A logic management system (118) is in communication with the first sensor (127) and is configured to receive and process the output signal and classify a mode (107, 109, 111, 113, 117, 119, 212, 123) of the aircraft (11). A controller (30) receives signal data from the logic management system (118) and communicates with a control axis actuator to regulate a level of control authority (130) provided to a pilot. The control authority (130) is individually regulated within each integrator as a result of the individual landing gear states.
    • 一种空中/地面接触逻辑管理系统(101),用于与飞机(11)中的电传控制系统一起使用。 系统(101)包括配置成提供输出信号以确定飞机(11)何时处于过渡区域中的第一传感器(127)。 逻辑管理系统(118)与第一传感器(127)通信并且被配置为接收和处理输出信号并且将输出信号的模式(107,109,111,113,117,119,212,123)分类为 飞机(11)。 控制器(30)从逻辑管理系统(118)接收信号数据并与控制轴致动器通信以调节提供给飞行员的控制权限(130)的级别。 作为各个起落架状态的结果,控制权(130)在每个积分器内被单独调节。
    • 40. 发明公开
    • Speed command apparatus for aircraft
    • GeschwindigkeitssteuervorrichtungfürFlugzeug。
    • EP0078688A1
    • 1983-05-11
    • EP82305780.7
    • 1982-11-01
    • SPERRY CORPORATION
    • Miller, Harry
    • G05D1/06
    • G05D1/0638G05D1/0653
    • Speed command apparatus for use in an aircraft performance management system of the type wherein a target Mach number command is supplied to the aircraft pitch controls to attain the target Mach and is simultaneously supplied to the aircraft throttles to capture a computed engine pressure ratio (EPR) or fan speed (N,), the apparatus being operative during maximum thrust climbs and minimum thrust descents upon an abrupt step function target Mach number command. The step function command is converted to a ramp command, the slope of which is directly proportional to the existing thrust-minus- drag conditions of the aircraft and inversely proportional to its existing weight, thus ensuring a proper division between aircraft acceleration and rate of climb or aircraft deceleration and rate of descent.
    • 用于飞机性能管理系统的速度指令装置,其中向飞行器俯仰控制提供目标马赫数指令以达到目标马赫,同时提供给飞行器节流阀以捕获计算的发动机压力比(EPR) 或风扇速度(N1),该装置在最大推力爬升时起作用,并且在突然的步骤功能目标马赫数指令上最小推力下降。 步进功能命令被转换为斜坡命令,其斜率与飞机的现有推力 - 负阻力条件成正比,与其现有重量成反比,从而确保飞机加速度与爬升速率之间的适当分配 或飞机减速和下降速度。