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    • 5. 发明申请
    • MECHANICAL POSITION INDICATOR FOR UN AIRCRAFT LANDING GEAR
    • 联合国飞机起落架机械位置指示器
    • WO2012069806A1
    • 2012-05-31
    • PCT/GB2011/052182
    • 2011-11-09
    • MESSIER-DOWTY LIMITEDHODGKINSON, BenLACY, StuartWEBB, ChrisANSON, Garry
    • HODGKINSON, BenLACY, StuartWEBB, ChrisANSON, Garry
    • B64D45/00B64C25/00
    • B64D45/0005B64C25/00B64D2045/008
    • A mechanical position indicator (9a) for providing a visual indication that a first part of an aircraft landing gear (1) has assumed a predetermined position relative to a second part, the position indicator (9a) being arranged to be coupled to a first one of the first and second parts and in a first state arranged to hold an indicator element (15a) in a deployed position, the position indicator (9a) being arranged such that upon the first part assuming the predetermined position relative to the second part, a second one of the first and second parts changes the position indicator (9a) from the first state to a second state in which the indicator element (15a) is displaced from the deployed position, the position indicator (9a) being arranged to inhibit the indicator element (15a) thereafter returning to the deployed position.
    • 一种用于提供飞行器起落架(1)的第一部分相对于第二部分已经具有预定位置的视觉指示的机械位置指示器(9a),所述位置指示器(9a)被布置成联接到第一部分 的第一和第二部分,并且在布置成将展示元件(15a)保持在展开位置的第一状态下,位置指示器(9a)被布置成使得在第一部分相对于第二部分呈现预定位置时, 第一和第二部分中的第二部分将位置指示器(9a)从第一状态改变到指示元件(15a)从展开位置移位的第二状态,位置指示器(9a)布置成禁止指示器 元件(15a)此后返回到展开位置。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR PRODUCING AN ACOUSTIC FIELD
    • 用于产生声学场的方法和装置
    • WO2014181084A1
    • 2014-11-13
    • PCT/GB2014/051319
    • 2014-04-29
    • THE UNIVERSITY OF BRISTOL
    • CARTER, Thomas AndrewLONG, Benjamin John OliverSUBRAMANIAN, Sriram
    • H04S7/00
    • G01S7/52004G01S7/52003G01S7/539G01S15/36G01S15/876G01S2007/52007H04S7/30
    • A plurality of control points (10) are defined which each have a known spatial relationship relative to an array of transducers. An amplitude is assigned to each control point (12). A matrix (16) is produced containing elements which represent, for each of the control points, the effect that producing a modeled acoustic field having the assigned amplitude with a particular phase at the control point has on the consequential amplitude and phase of the modeled acoustic field at the other control points (14). Eigenvectors of the matrix (18) are determined, each eigenvector representing a set of phases and relative amplitudes of the modeled acoustic field at the control points. One of the sets (20) is selected and the transducer array is operated to cause one or more of the transducers to output an acoustic wave each having an initial amplitude and phase such that the phases and amplitudes of the resultant acoustic field at the control points correspond to the phases and relative amplitudes of the selected set (22, 24).
    • 定义了多个控制点(10),每个控制点相对于换能器阵列具有已知的空间关系。 向每个控制点(12)分配一个振幅。 产生一个矩阵(16),其中包含元素,对于每个控制点,表示在控制点处产生具有特定相位的具有分配幅度的建模声场的效果在建模声学的相应振幅和相位上 在其他控制点(14)处。 确定矩阵(18)的特征向量,每个特征向量表示控制点处的建模声场的一组相位和相对幅度。 选择组(20)中的一个,并且操作换能器阵列以使一个或多个换能器输出每个具有初始振幅和相位的声波,使得在控制点处的所得声场的相位和振幅 对应于所选择的组(22,24)的相位和相对幅度。