-
公开(公告)号：EP0356422A1
公开(公告)日：1990-03-07
申请号：EP87906689.0
申请日：1987-04-21
发明人： GRANDOS, Norman
CPC分类号： G01S13/345 , F42C13/045
摘要： Une fréquence porteuse est modulée en fréquence avec une onde triangulaire et émise à partir d'un détecteur (52) en direction d'une cible (56) se déplaçant par rapport au détecteur, la reflexion (58) à partir de la cible (56) est reçue et mélangée (62) avec une partie du signal émis (54). Deux harmoniques au minimum de la fréquence de modulation sont filtrées (74, 74a) à partir de la sortie du mélangeur. Chaque harmonique est détectée de manière synchrone (84, 84a) avec une harmonique de la même fréquence pour obtenir un signal doppler qui est détecté et introduit dans un comparateur (92). Chaque harmonique et son enveloppe doppler correspondante atteignent un pic d'amplitude à une distance de la cible propre à chacune d'elles. Quand l'amplitude du doppler d'une harmonique est supérieure à celle du doppler d'une autre harmonique, une distance prédéterminée par rapport à la cible est signalée par le comparateur.
-
42.发明公开
公开(公告)号：EP0316043A2
公开(公告)日：1989-05-17
申请号：EP88202488.8
申请日：1988-11-08
发明人： Webb, George
摘要： The invention relates to a safe and arm mechanism for an exploding projectile to be fired from a rifled gun. The projectile first experiences axial and angular acceleration which moves a setback ball (11) to initially arm the mechanism. A third projectile parameter, angular velocity, functions to lock the ball in the armed position. During projectile flight, a spin actuated escapement mechanism moves toward a fully armed position, but may be precluded from reaching that fully armed position by a command arm arrangement. The projectile is then fully armed when a command arm signal releases the arrangement and the escapement mechanism is allowed to complete its motion to the fully armed position. When the projectile strikes a target, it experiences axial deceleration which moves a contact ball (17) partway to a detonating position. After the projectile passes through the target surface and into a void, e.g., into the hull of a ship, the deceleration ceases and the contact (17) ball moves under centrifugal force to a final position to detonate the projectile.
Movement of the setback ball (11) functions as one primary safety lock to preclude operation of the escapement mechanism. At rest, the ball (11) is positioned above a leaf spring. Axial and angular acceleration of the projectile depresses the spring (19) and the ball moves to another position. This motion releases the rotor (13) of the escapement mechanism. The rotor (13) is weighted so that rotation of the projectile causes it to tend to rotate. The cam follower of an electronically controlled actuator engages a cam track in the rotor and limits this rotation in stages from the fail safe position to an intermediate position where a command arming signal is required before the rotor (13) moves into the fully armed position. In the fully armed position, a contact ball (17) is brought into alignment with a switch housing.
When the projectile strikes a target and decelerates, the contact (17) ball moves upwardly into an annular region and when that deceleration ceases and the projectile is in a void such as inside a ship's hull, the ball (17) moves rearwardly and outwardly in the annular area connecting a pair of contacts and detonating the device some distance beyond the point of impact.摘要翻译： 本发明涉及一种用于从膛线枪射击的爆炸射弹的安全和手臂机构。 抛射体首先经历轴向和角加速度，其移动挫折球（11）以最初布置该机构。 第三个射弹参数，角速度，用于将球锁定在武装位置。 在弹射飞行期间，旋转致动的擒纵机构朝向完全布防的位置移动，但是可以通过指挥臂布置来阻止到达完全布防的位置。 然后，当指挥臂信号释放该装置并且允许擒纵机构完全向完全装备的位置完成其运动时，弹药完全武装。 当弹丸撞击目标时，它会经历轴向减速，将接触球（17）中途移动到引爆位置。 在射弹穿过目标表面并进入例如船体的空隙中之后，减速停止，接触球（17）在离心力下移动到最终位置以引爆射弹。 坠落球（11）的运动用作一个主安全锁，以排除擒纵机构的操作。 静止时，球（11）位于板簧的上方。 射弹的轴向和角加速度压下弹簧（19），球移动到另一个位置。 该运动释放了擒纵机构的转子（13）。 对转子（13）进行加权，使得抛射体的旋转使其转动。 电子控制执行器的凸轮从动件与转子中的凸轮轨道接合，并将该转动从故障安全位置分阶段限制到在转子（13）进入完全布防位置之前需要指令布防信号的中间位置。 在完全布防的位置，接触球（17）与开关壳体对准。 当弹丸撞击目标并减速时，接触球（17）向上移动到环形区域，当该减速停止并且射弹处于诸如船体内部的空隙中时，球（17）向后和向外移动 连接一对触点的环形区域并将装置引爆超过冲击点的距离。
-
公开(公告)号：EP0281192A1
公开(公告)日：1988-09-07
申请号：EP88200338.7
申请日：1988-02-24
CPC分类号： F01L9/04 , F01L1/16 , H01F7/088 , H01F7/124 , H01F7/1646 , H01F2007/1669
摘要： A bistable electromechanical transducer is disclosed having an armature (3, 20) reciprocable between first and second positions, a permanent magnet (26) latching arrangement for maintaining the armature (3, 20) in the respective positions, and an electromagnetic repulsion arrangement (13, 15) operable when energized to dislodge the armature (3, 20) from the position in which the armature was maintained and causing it to move to the other of the positions. In a preferred embodiment, the transducer takes the form of an electronically controllable valve mechanism for use in an internal combustion engine and has an engine valve (1) with an elongated valve stem (17) along with the electromagnetic repulsion arrangement (13, 15) for causing the valve to move in the direction of stem elongation between valve-open and valve-closed positions. An arrangement for decelerating the valve as the valve nears the respective valve-open and valve-closed positions includes as least two separate damping arrangements (4, 21, 35, 37) jointly effective to slow valve motion as the valve gets close to said one position. The damping may include dynamic breaking and energy recovery. The mechanism may also include a housing (23) at least partially surrounding the valve stem and an arrangement (49) for circulating the engine liquid coolant through a portion of the housing.
摘要翻译： 公开了一种双稳态机电换能器，其具有在第一和第二位置之间往复运动的电枢（3,20），用于将电枢（3,20）保持在相应位置的永磁体（26）闩锁装置，以及电磁排斥装置 ，15），其在通电时可操作以将所述电枢（3,20）从所述电枢保持的位置移开并使其移动到所述位置中的另一个。 在优选实施例中，换能器采用用于内燃机的电子可控阀机构的形式，并且具有与电磁排斥装置（13,15）一起的细长阀杆（17）的发动机气门（1） 用于使阀在阀打开和阀关闭位置之间的杆伸长方向上移动。 当阀门靠近相应的阀打开和闭阀位置时，用于使阀门减速的装置包括至少两个单独的阻尼装置（4,21,35,37），当阀门接近所述一个 位置。 阻尼可以包括动态断裂和能量回收。 该机构还可以包括至少部分地围绕阀杆的壳体（23）和用于使发动机液体冷却剂循环通过壳体的一部分的装置（49）。
-
公开(公告)号：EP0110480A3
公开(公告)日：1987-05-13
申请号：EP83201683
申请日：1983-11-29
发明人： Congdon, John C.
IPC分类号： G10K11/26
CPC分类号： G10K11/006 , B06B1/0655 , G10K11/26
摘要： (571 A stacked phased array type of transducer has a single electroacoustic transducer element supported intermediately of an elongated tube having a plurality of ports and an end wall at each end thereof for transmitting and receiving acoustic waves broadside the longitudinal axis of the array tube. The element has a first vibratile surface in direct acoustical communication with the external transmission medium and a second vibratile surface in direct acoustical communication with the tube internal transmission medium. The tube is provided with at least one annular port spaced longitudinally from each end of the element for providing acoustic coupling between the internal and external transmission mediums with the tube interior providing acoustic transmission paths internally of the tube communicating between the second vibratile surface and the external transmission medium at each one of the ports. The physical spacing of the ports, the aperture area of the ports, the effective acoustical wave path length internally of the tube, and the acoustical impedance of the end walls of the tube are configured to provide predetermined phase shift and acoustic transmission characteristics of the transmission paths between the second vibratile surface of the transducer element and the external transmission medium immediately adjacent each port to provide a maximum acoustic wave pattern broadside or perpendicular to the longitudinal axis of the tube. Baffles are provided to phase shift control the acoustical wave internally of the tube. In an embodiment transducer elements and ports are alternately positioned along the tube length.
-
公开(公告)号：EP0143502A3
公开(公告)日：1985-11-21
申请号：EP84201714
申请日：1984-11-26
IPC分类号： F03G01/00
CPC分类号： F03G1/00
摘要： Motor apparatus comprising an elongated motor shaft (212) having a shaft axis and means (328, 216) for supporting said shaft for rotation about said axis; first spring means (320) for applying a first torque in a first rotational direction to said shaft; second spring means (322) for applying a second torque in a second rotational direction to said shaft; and means (284, 286) for selectively releasing the torque of at least one of said spring means to impart rotation to said shaft.
-
公开(公告)号：EP0145069A2
公开(公告)日：1985-06-19
申请号：EP84201716.2
申请日：1984-11-26
IPC分类号： B63B22/08
CPC分类号： B63B22/003
摘要： A sonobuoy float canister is releasably latched to a wound cable pack container. The cable is attached at its upper end to the canister and at its lower end to a lower sonobuoy component. A rotor latches the canister and container together in one rotative position so that the cable is not unwound or payed out to provide a first or shallow depth deployment of the lower component. In a second rotative position of the rotor the canister and container are unlatched from one another and the cable is positively restrained after a predetermined partial payout to provide a medium depth deployment of the lower component. In a third rotative position of the rotor the positive restraint of cable payout is removed and the canister and container are unlatched so that the cable is fully payed out to provide for full depth deployment of the underwater component.
-
公开(公告)号：EP0137552A2
公开(公告)日：1985-04-17
申请号：EP84201329.4
申请日：1984-09-14
发明人： Diepeveen, Neal
摘要： A mirror assembly is described for scanning radiation onto a target for example an array of infrared detectors. The mirror assembly includes a cylindrical mirror arrangement having at least two mirror faces arranged around a central axis. Each mirror face is made up of a plurality of planar mirror segments. The mirror segments are arranged to form a stepped structure in which each mirror segment in a given mirror face is parallel to each other mirror segment in the mirror face.
-
-
-
-
-
-
搜索结果
47 条记录 (耗时 0.017 秒)
