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1. 发明公开

EP0506657A1 SYSTEM FOR MEASURING VELOCITY FIELD OF FLUID FLOW UTILIZING A LASER-DOPPLER SPECTRAL IMAGE CONVERTER 失效
标题翻译：法测量的流体流使用激光多普勒SPEKTRALBILDUMSETZERS的速度场的。
公开(公告)号：EP0506657A1
公开(公告)日：1992-10-07
申请号：EP90909887.0
申请日：1989-12-21
申请人： NORTHROP CORPORATION
发明人： KOMINE, Hiroshi
IPC分类号： G01P3 , G01J3 , G01N21 , G01P5
CPC分类号： G01P5/001
摘要： Un champ d'écoulement semé de petites particules est illuminé à l'aide d'un rayon aplati de lumière laser monochromatique collimatée (16). La diffusion à décalage Doppler due au mouvement des particules est convertie en image à l'aide d'un système optique (22). Un convertisseur optique fréquence-intensité (24) est situé sur le plan d'image de telle sorte que l'image transmise contient une mesure bidimensionnelle simultanée de la vitesse d'écoulement dans une direction déterminée par un faisceau laser et une direction d'observateur (convertisseur). On peut observer ces images directement ou à travers un réseau de caméras TV-2-D et un moniteur, ou les traiter par ordinateur (28).

2. 发明公开

EP0324848A1 COMPOSITE FASTENER AND METHOD OF MANUFACTURE 失效
标题翻译：复合紧固件及其制造方法。
公开(公告)号：EP0324848A1
公开(公告)日：1989-07-26
申请号：EP88908040.0
申请日：1988-07-14
申请人： NORTHROP CORPORATION
发明人： OLEZ, Nejat, Avni , ULDRICH, Flerida, Burdick
IPC分类号： F16B35 , B29C69 , B29C70 , B29D1 , F16B19 , F16B33 , B29K105 , B29L31
CPC分类号： B29D1/005 , B29C70/081 , B29C70/14 , B29C70/20 , B29C70/345 , B29K2105/101 , B29L2001/002 , B29L2031/727 , F16B33/006 , Y10S411/901 , Y10S411/908
摘要： An essentially cylindrical, light weight, composite fastener (10) formed of an interior cylindrical core member (22), a cone- shaped molded insert plug member (24) in the first or head end of the core, and an exterior cup-shaped overwrap member (16). Threads (44) are formed at the second or threaded end of the fas tener. All of the components are fabricated of an organic resin ma terial with high-modulus fibers embedded therein. The fibers (12) of the exterior member are long and continuous while the fibers of the other members are short and chopped. All the fibers are essen tially parallel with the axis of the fastener. The resin material is preferably polyetheretherketone and the fibers are preferably gra phite. Also disclosed is the method of manufacturing the above de scribed fastener.

3. 发明授权

EP0040205B1 SOLENOID TORQUER SYSTEM 失效
标题翻译：电磁转矩系统
公开(公告)号：EP0040205B1
公开(公告)日：1984-05-16
申请号：EP80901994.6
申请日：1980-08-25
申请人： NORTHROP CORPORATION
发明人： SPIEGEL, Leo
IPC分类号： G05B17/00 , H02P7/00
CPC分类号： G01C19/30
摘要： A solenoid torquer system with flux rate feedback. The system includes a torquer coil (16) and an associated core (12) and a device (27) adapted to drive a current through the coil having an amplitude proportional to the difference between a coil current command signal (26) and the actual current in the coil (24a). A flux rate servo loop includes a sensor coil (18) coupled to the core (12) to provide a signal representative of the flux rate in the core (12). This flux rate signal is compared with a flux rate command signal (40) having a ternary width-modulated form. The resultant difference signal is used as the current command signal (26). The system network provides a precise flux level, or force. It minimizes sensitivity to gap variations, magnetic material changes, hysteresis, son saturation, temperature and other effects that degrade conventional solenoid torquers.

4. 发明公开

EP1471675A2 Multirate CDMA system based on orthogonal bipolar spreading vectors 审中-公开
标题翻译：多速率CDMA系统基站
公开(公告)号：EP1471675A2
公开(公告)日：2004-10-27
申请号：EP03027814.7
申请日：2003-12-03
申请人： NORTHROP CORPORATION
发明人： Linsky, Stuart T. , Wright, David A.
IPC分类号： H04J11/00
CPC分类号： H04B1/7093 , H04B2201/70703 , H04J13/0048
摘要： A modulation channelization and demodulation system based on orthogonal bipolar spreading vectors is provided that permits a variable information rate to be transmitted without inducing envelope fluctuations and permits multiple access without requiring the transmitter amplifiers to support the combined information rate of all users. The modulation system uses the vectors of a Hadamard matrix to form communication channels. The information rate on any channel may be doubled by using half the vector length to transmit information. The vector that is not non-orthogonal-in-the-half to the rate-doubled vector is preferably deactivated. In the same fashion, higher information rates may be provided through truncation of the transmission vector and the elimination of the resultant non-orthogonal vectors. A multi-channel receiver including a Fast Hadamard Transform structure comprised of controllable modified logic cells for performing the multi-rate communication of the present invention is illustrated. A multi-channel transmitter for performing the present invention is also shown.
摘要翻译：提供了一种基于正交双极性扩展向量的调制信道化和解调系统，其允许在不引起包络波动的情况下传输可变信息速率并且允许多次接入，而不需要发射机放大器来支持所有用户的组合信息速率。调制系统使用Hadamard矩阵的向量来形成通信信道。通过使用一半的矢量长度来传输信息，任何频道上的信息速率都可能加倍。优选不使速率加倍的矢量不是非正交的矢量的失效。以相同的方式，可以通过截断传输向量和消除所得到的非正交向量来提供更高的信息速率。示出了包括用于执行本发明的多速率通信的可控修改逻辑单元的快速哈达玛变换结构的多通道接收器。还示出了用于执行本发明的多通道发送器。

5. 发明授权

EP0648340B1 OBSTACLE AVOIDANCE SYSTEM FOR HELICOPTERS AND AIRCRAFT 失效
标题翻译：直升机和飞机避障系统
公开(公告)号：EP0648340B1
公开(公告)日：1999-06-16
申请号：EP94914861.3
申请日：1994-04-20
申请人： NORTHROP CORPORATION
发明人： KRUMES, Rolf , RICHMAN, Dennis, C. , BOSE, Carl, L.
IPC分类号： G01S17/88
CPC分类号： G01S17/933 , G05D1/0646
摘要： A system for sensing objects in the flight path of an aircraft and alerting the pilot to their presence includes a laser radar subsystem for emitting a beam of laser energy, receiving returns from objects, and processing the returns to produce range data related to the range of the objects from the aircraft. A scanning subsystem scans the beam and produces directional information related to the instantaneous direction of the beam relative to the aircraft. Processor circuitry controls operation, processes the range data and directional information with instrumentation data from the avionics system, produces video information related to the range, direction, and type of the objects, and interfaces the video information to the video display system. The processor circuitry may be programmed to (1) overlay video information on existing aircraft video display system, (2) provide acoustical warnings on an aircraft intercom, (3) analyze returns by subdividing the field of regard into a series of analysis windows, performing a statistical analysis of the returns related to each of the analysis windows, and identifying returns that fall into a common range interval, (4) transforming coordinates of objects measured relative to the aircraft to a horizon-stabilized, north-oriented coordinate system which is independent of the attitude of the aircraft, (5) inserting the coordinates of identified objects into a data base so that the coordinates may be used for constructing a video display at a later time and updating the data base to correct for movements of the aircraft, and (6) constructing a window-of-safety display of objects currently within the field of regard by adjusting the displayed position of the objects to compensate for avoidance maneuvers the pilot may execute.

6. 发明公开

EP0648340A1 OBSTACLE AVOIDANCE SYSTEM FOR HELICOPTERS AND AIRCRAFT 失效
标题翻译：避障系统，直升机和飞机。
公开(公告)号：EP0648340A1
公开(公告)日：1995-04-19
申请号：EP94914861.0
申请日：1994-04-20
申请人： NORTHROP CORPORATION
发明人： KRUMES, Rolf , RICHMAN, Dennis, C. , BOSE, Carl, L.
IPC分类号： G01S17
CPC分类号： G01S17/933 , G05D1/0646
摘要： A system for sensing objects in the flight path of an aircraft and alerting the pilot to their presence includes a laser radar subsystem for emitting a beam of laser energy, receiving returns from objects, and processing the returns to produce range data related to the range of the objects from the aircraft. A scanning subsystem scans the beam and produces directional information related to the instantaneous direction of the beam relative to the aircraft. Processor circuitry controls operation, processes the range data and directional information with instrumentation data from the avionics system, produces video information related to the range, direction, and type of the objects, and interfaces the video information to the video display system. The processor circuitry may be programmed to (1) overlay video information on existing aircraft video display system, (2) provide acoustical warnings on an aircraft intercom, (3) analyze returns by subdividing the field of regard into a series of analysis windows, performing a statistical analysis of the returns related to each of the analysis windows, and identifying returns that fall into a common range interval, (4) transforming coordinates of objects measured relative to the aircraft to a horizon-stabilized, north-oriented coordinate system which is independent of the attitude of the aircraft, (5) inserting the coordinates of identified objects into a data base so that the coordinates may be used for constructing a video display at a later time and updating the data base to correct for movements of the aircraft, and (6) constructing a window-of-safety display of objects currently within the field of regard by adjusting the displayed position of the objects to compensate for avoidance maneuvers the pilot may execute.

7. 发明公开

EP0506657A4 SYSTEM FOR MEASURING VELOCITY FIELD OF FLUID FLOW UTILIZING A LASER-DOPPLER SPECTRAL IMAGE CONVERTER 失效
标题翻译：利用激光多普勒光谱图像转换器测量流速的流场系统
公开(公告)号：EP0506657A4
公开(公告)日：1993-09-29
申请号：EP90909887
申请日：1989-12-21
申请人： NORTHROP CORPORATION
发明人： KOMINE, HIROSHI
IPC分类号： G01P3/36 , G01J3/12 , G01N21/00 , G01P5/00
CPC分类号： G01P5/001
摘要： A flow field seeded with small particles is illuminated by collimated, monochromatic laser light sheet (16). Doppler shifted scattering from particle motion is imaged by an optical system (22). An optical frequency-to-intensity converter (24) is located at the image plane such that the transmitted image contains a simultaneous two-dimensional measurement of flow velocity along a direction determined by a laser beam and observer (converter) direction. These images can be observed directly or through a TV-2-D array camera and monitor or processed through a computer system (28).

8. 发明授权

EP0388402B1 PENTAGONAL RING LASER GYRO 失效
公开(公告)号：EP0388402B1
公开(公告)日：1993-02-03
申请号：EP88904423.6
申请日：1987-11-02
申请人： NORTHROP CORPORATION
发明人： LIM, Wah, L. , HAUCK, James, P. , RAQUET, Jack, W.
IPC分类号： G01C19/64 , H01S3/083
CPC分类号： G01C19/661 , H01S3/083 , H01S3/0835
摘要： A ring laser gyroscope (10) incorporates a resonant cavity generally shaped as an irregular pentagon having a portion thereof conformed as three legs, a base (21), and two (22, 25) of a rectangle closed by two symmetrical other legs (23, 24) to form an apex whose bisector defines a symmetrical structure in the base of which are carried a central cathode and end mounted anodes to define two discharge paths generating oppositely directed laser beams. As a result, the enclosed area is increased, increasing sensitivity and decreasing lock-in, while magnetic effects are reduced. Additionally, the irregular shape allows for the extension of the gain medium which therefore increases the effectiveness thereof.
摘要翻译：环形激光陀螺仪（10）包括谐振腔，谐振腔通常形成为不规则五边形，其一部分形成三条腿，基部（21）和由两个对称的另一条腿（23）封闭的矩形的两个（22,25），24）以形成其平分线限定对称结构的顶点，在所述对称结构的基座中承载中心阴极并且端部安装阳极以限定产生相反方向的激光束的两个放电路径。结果，封闭区域增加，灵敏度增加并且锁定减少，而磁性效应降低。另外，不规则形状允许增益介质的延伸，因此增加了其有效性。

9. 发明公开

EP0438398A1 OPTICALLY TRANSPARENT ELECTRICALLY CONDUCTIVE SEMICONDUCTOR WINDOWS AND METHODS OF MANUFACTURE 失效
标题翻译：透明，导电的半导体窗口和方法。
公开(公告)号：EP0438398A1
公开(公告)日：1991-07-31
申请号：EP89902482.0
申请日：1988-10-14
申请人： NORTHROP CORPORATION
发明人： BIRICIK, V., Warren , ROWE, James, M. , KRAATZ, Paul , TULLY, John, W.
IPC分类号： G02B1 , H01B5 , H01L31
CPC分类号： G02B1/116
摘要： A semiconductor window which is transparent to light in the infrared range and which has good electrical conductivity is formed of a substrate material (11) having a semiconductor coating (14) having a dopant included therein. The coating is diffused, grown or deposited on one surface of the substrate and is controlled to obtain both low electrical resistivity and high infrared transmissivity. The coating can be formed of the same material as the substrate or can be a different material. Windows having particular thermal properties are formed utilizing zinc selenide and zinc sulfide as the substrate.

10. 发明授权

EP0026066B1 Thin film laser gyro 失效
标题翻译：薄膜激光陀螺仪
公开(公告)号：EP0026066B1
公开(公告)日：1985-05-15
申请号：EP80303163.2
申请日：1980-09-10
申请人： NORTHROP CORPORATION
发明人： Lawrence, Anthony W.
IPC分类号： G01C19/64 , H01S3/083
CPC分类号： G01C19/727

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