公开(公告)号：WO1998029750A2

公开(公告)日：1998-07-09

申请号：PCT/US1997024065

申请日：1997-12-22

Applicant: MCDONNELL DOUGLAS CORPORATION

Inventor： MCDONNELL DOUGLAS CORPORATION ,  BERRY, John, C., Jr. ,  FOGG, Larry, L.

IPC: G01R00/00

CPC classification number: G01R31/2849

Abstract: A method and apparatus for evaluating the suitability of an encapsulated electrical circuit for use in a particular service environment provides for immersing the encapsulated circuit in a slightly conductive evaluating fluid whose chemical composition approximates the environment into which the circuit will be placed in service. The thus-immersed circuit is then subjected to a reduced-pressure testing environment to draw air and other retained gases out of internal voids within the encapsulated circuit. The pressure of the testing environment is slowly increased to cause the encapsulated circuit to ingest a quantity of the evaluating fluid. An input signal is then applied to the circuit and the circuit's response to the input signal is monitored over a predetermined time period.

Abstract translation: 用于评估用于特定服务环境中的封装电路的适用性的方法和装置提供将封装电路浸入稍微导电的评估流体中，其化学组成近似于电路将投入使用的环境。 然后将如此浸入的电路进行减压测试环境，以将空气和其它保留的气体从封装的电路内的内部空隙中抽出。 测试环境的压力缓慢增加，使得封装的电路摄取一定量的评估流体。 然后将输入信号施加到电路，并且在预定时间段内监视电路对输入信号的响应。

公开(公告)号：WO1998015798A1

公开(公告)日：1998-04-16

申请号：PCT/US1996016190

申请日：1996-10-09

Applicant: McDONNELL DOUGLAS CORPORATION ,  JOHNSON, Bartley

Inventor： McDONNELL DOUGLAS CORPORATION

IPC: G01B09/02

CPC classification number: G01B11/161 ,  G01L1/246

Abstract: An apparatus (60) or system (30) for determining a differential time derivative of strain in a device that has a low coherence light source (32) coupled to a plurality of Fabry-Perot etalons (62). The reflected signals from the Fabry-Perot etalons are coupled to a beam splitter (44) or acousto-optic modulator (66). A first beam (48) and a second beam (50) from the output (46) of the beam splitter (44) are combined in at least one interferometer (52, 64). The outputs of the interferometers (64) are detected by a plurality of detectors (124). The outputs of the detectors (124) are coupled to a plurality of FM demodulators (127). The output of the FM demodulators (127) are a plurality of signals proportional to the difference in the time derivative strain at the pair of mirrors (94, 96) of one of the Fabry-Perot etalons (62).

Abstract translation: 一种用于确定具有耦合到多个法布里 - 珀罗标准间（62）的低相干光源（32）的装置中的应变的微分时间导数的装置（60）或系统（30）。 来自法布里 - 珀罗标准具的反射信号耦合到分束器（44）或声光调制器（66）。 来自分束器（44）的输出（46）的第一光束（48）和第二光束（50）在至少一个干涉仪（52,64）中组合。 干涉仪（64）的输出由多个检测器（124）检测。 检测器（124）的输出耦合到多个FM解调器（127）。 FM解调器（127）的输出是与法布里 - 珀罗法（62）中的一个的对对（94,96）处的时间导数应变的差成比例的多个信号。

公开(公告)号：WO1998015494A1

公开(公告)日：1998-04-16

申请号：PCT/US1996016189

申请日：1996-10-09

Applicant: McDONNELL DOUGLAS CORPORATION ,  BELK, John, H.

Inventor： McDONNELL DOUGLAS CORPORATION

IPC: C01B09/02

CPC classification number: G01L1/242 ,  G01D5/35312 ,  G01D5/35316 ,  G01D5/3538 ,  G01L1/26

Abstract: A strain sensor (50) combines an intrinsic Fabry-Perot interferometer (IFPI) (60) with an extrinsic Fabry-Perot interferometer (EFPI) (56, 62). The IFPI (60) is between two EFPIs (56, 64) and shares its two air to glass mirrors (58, 64). The outside edges (54, 66) of the two EFPIs (56, 64) are connected to an optical fiber (52). The strain sensor (164) can be implemented on a semiconductor chip (150). A waveguide (156) on the semiconductor chip (150) is etched to form two blocks (158) with an island section (162) between them. The two blocks (158) form the EFPI and the center section (162) forms the IFPI. A strain measurement system (100) that takes advantage of the strain sensor (50) has a laser (102) coupled to an optical fiber (106) containing one or more strain sensors (108). A coupler (104) directs the reflected light from the sensors (108) to a tunable Fabry-Perot etalon (114). The output of the tunable Fabry-Perot etalon (114) is coupled to a photodetector (116). A controller (118) monitors the output of the photodetector (116) and controls the tunable Fabry-Perot etalon (114).

Abstract translation: 应变传感器（50）将本征法布里 - 珀罗干涉仪（IFPI）（60）与外在法布里 - 珀罗干涉仪（EFPI）（56,62）组合。 IFPI（60）位于两个EFPI（56,64）之间，并分享其两个空气到玻璃镜（58,64）。 两个EFPI（56,64）的外边缘（54,66）连接到光纤（52）。 应变传感器（164）可以在半导体芯片（150）上实现。 在半导体芯片（150）上的波导（156）被蚀刻以在它们之间形成具有岛部（162）的两个块（158）。 两个块（158）形成EFPI，中心部分（162）形成IFPI。 利用应变传感器（50）的应变测量系统（100）具有耦合到包含一个或多个应变传感器（108）的光纤（106）的激光（102）。 耦合器（104）将来自传感器（108）的反射光引导到可调谐的法布里 - 珀罗标准具（114）。 可调谐法布里 - 珀罗标准具（114）的输出耦合到光电检测器（116）。 控制器（118）监视光电检测器（116）的输出并控制可调法布里 - 珀罗标准具（114）。

公开(公告)号：WO1998012507A1

公开(公告)日：1998-03-26

申请号：PCT/US1996015012

申请日：1996-09-18

Applicant: McDONNELL DOUGLAS CORPORATION ,  BELK, John, H.

Inventor： McDONNELL DOUGLAS CORPORATION

IPC: G01D05/353

CPC classification number: G01D5/35383

Abstract: A fiber optic sensing system and method comprise a continuous optical fiber including at least three mirrors defining at least two contiguous optical cavities. Preferably, each optical cavity has a unique length so that the reflected optical signal associated with a given optical cavity will have a unique phase difference or wavelength allowing each of the respective optical signals to be selectively detected. A physical phenomenon acting on a given optical cavity can be sensed by determining changes in the respective optical signal reflected from that optical cavity. This sensing system allows a single optical fiber to include both integrating and point sensors. In addition, this system can be incorporated in smart structures.

Abstract translation: 光纤感测系统和方法包括连续光纤，其包括限定至少两个相邻光学腔的至少三个反射镜。 优选地，每个光腔具有唯一的长度，使得与给定光腔相关联的反射光信号将具有允许选择性地检测每个相应光信号的唯一相位差或波长。 可以通过确定从该光腔反射的相应光信号的变化来检测作用在给定光腔上的物理现象。 该感测系统允许单个光纤包括积分和点传感器。 此外，该系统可以并入智能结构。

公开(公告)号：WO1998012040A1

公开(公告)日：1998-03-26

申请号：PCT/US1997016529

申请日：1997-09-16

Applicant: McDONNELL DOUGLAS CORPORATION ,  SMITH, Michael, Roy ,  WALTERS, Kevin, Dale

Inventor： McDONNELL DOUGLAS CORPORATION

IPC: B29C65/36

CPC classification number: C09J11/04 ,  B29C65/3612 ,  B29C66/5326 ,  B29C66/71 ,  B29C66/7212 ,  B29C66/7392 ,  B29C66/7394 ,  B29C66/91221 ,  B29C66/91411 ,  B29C66/91431 ,  B29C66/91641 ,  B29C66/961 ,  B29C73/02 ,  B29C73/32 ,  B29C2035/0811 ,  B29C2035/0855 ,  B29K2063/00 ,  B29L2031/3085 ,  B64F5/40 ,  C09J5/06 ,  C09J9/00 ,  B29K2307/04 ,  B29K2077/00 ,  B29K2307/02

Abstract: A method of repairing a composite material product by adhering a repair patch to the composite material product with an adhesive or epoxy resin that includes magnetic particles. Thus, the adhesive or epoxy resin can be cured by electromagnetically exciting the magnetic particles, such as by microwave heating. The electromagnetically excited magnetic particles internally heat the adhesive or epoxy resin to the predetermined Curie Point temperature of the magnetic particles such that the adhesive or epoxy resin cures in a uniform and inspectable fashion. The magnetic particles can be mixed into an adhesive, such as a paste adhesive, a film adhesive or a foam adhesive, to create a magnetic particle integrated adhesive. The magnetic particle integrated adhesive can then be applied between a precured repair patch and the underlying composite material product. Alternatively, the magnetic particles can be distributed within the organic resin of an uncured repair patch such that the repair patch can be simultaneously cured and adhered to the composite material product by electromagnetically exciting the magnetic particles. In either embodiment, the adhesive or the epoxy resin is adapted to cure within a predetermined range of cure temperatures. Thus, the magnetic particles, such as Ferrous Silicide, should have a predetermined Curie Point temperature within the predetermined range of cure temperatures.

Abstract translation: 一种通过用包括磁性颗粒的粘合剂或环氧树脂将修复贴片粘附到复合材料产品上来修复复合材料产品的方法。 因此，粘合剂或环氧树脂可以通过电磁激励磁性颗粒例如通过微波加热来固化。 电磁激发的磁性颗粒将粘合剂或环氧树脂内部加热到磁性颗粒的预定居里点温度，使得粘合剂或环氧树脂以均匀且可检查的方式固化。 磁性颗粒可以混合成粘合剂，例如糊状粘合剂，薄膜粘合剂或泡沫粘合剂，以产生磁性颗粒整合的粘合剂。 然后可以将磁性颗粒整合的粘合剂施加在预固化的修补贴片和下面的复合材料产品之间。 或者，磁性颗粒可以分布在未固化的修补贴片的有机树脂内，使得修复贴片可以通过电磁激励磁性颗粒同时固化并粘附到复合材料产品上。 在任一实施方案中，粘合剂或环氧树脂适于在预定固化温度范围内固化。 因此，诸如硫化亚铁之类的磁性颗粒在预定的固化温度范围内应具有预定的居里点温度。

公开(公告)号：WO1998010128A1

公开(公告)日：1998-03-12

申请号：PCT/US1997015411

申请日：1997-09-03

Applicant: McDONNELL DOUGLAS CORPORATION ,  WAGENER, Gert ,  PALMER, Raymond, J.

Inventor： McDONNELL DOUGLAS CORPORATION

IPC: D04B21/14

CPC classification number: D04H3/04 ,  D04B21/165 ,  D04H3/002 ,  D04H3/004 ,  D04H3/115 ,  D04H3/12 ,  D10B2403/02412 ,  D10B2505/02 ,  Y10T442/463

Abstract: An improved warp/knit stitch reinforced multi-axial non-crimp layered fabric sheet used in structural applications, as for example, in aircraft and water applications, e.g., the skin of an airplane wing or fuselage structure, in water applications, e.g., skins of surfboards and boats, and in other areas where high strength and relatively light weight is required. The fabric is comprised of a plurality of plies facewise disposed upon one another and knitted or stitched to form a structural sheet. Each fabric ply is made of strands of aligned structural fibers which can be later impregnated and even pre-impregnated with a resin curable matrix. The improved sheet is formed by applying unidirectional non-crimp and non-woven plies of different angular relationship to one another, e.g., a +45 DEG , a 90 DEG and a -45 DEG ply and locating 0 DEG plies in essentially any position in the ply arrangement such that the 0 DEG ply can be on the bottom of the sheet, on top of the sheet, or interposed between plural ply layers of the sheet. The sheets are then knitted or stitched together to make a stock of multiaxial fabric layers. The fiber weight and thickness can also be varied throughout the sheets by using plies of different thicknesses or differing weights of fibers. Moreover, the percentage of a certain type of fiber in a particular ply can be varied. In addition, damage tolerance can be built into the cured laminate. Further, doublers and local area reinforcements can also be included in the sheet. In addition, a warp/knit, or warp/stitched fabric may be made to a desired width without otherwise affecting the structural properties of the sheet. An apparatus and a method for producing the fabric is disclosed.

Abstract translation: 用于结构应用中的改进的经编/针织线迹增强多轴非卷曲层状织物片，例如在飞机和水应用中，例如在水应用中的飞机机翼或机身结构的皮肤，例如皮肤 的冲浪板和船只，以及需要高强度和相对较轻重量的其他区域。 织物由多个彼此面对地设置并且编织或缝合以形成结构片的层组成。 每个织物层由对准的结构纤维的线制成，其可以稍后浸渍并甚至预浸渍有树脂可固化基质。 改进的片材通过施加相互不同角度关系的单向非卷曲和无纺布层而形成，例如+45°，90°和-45°层，并且在0°层中基本上位于 层叠布置使得0°层可以在片材的底部，在片材的顶部上，或者插入片材的多个层之间。 然后将这些片材编织或缝合在一起以制备多轴织物层的原料。 通过使用不同厚度的纤维或不同重量的纤维，纤维的重量和厚度也可以在整个片材中变化。 此外，特定层中某种类型的纤维的百分比可以变化。 此外，可以在固化的层压板中建立损伤公差。 此外，还可以在工作表中包括加倍和局部增强。 此外，经纱/针织物或经编/缝合织物可以制成期望的宽度而不影响片材的结构性质。 公开了一种用于生产织物的装置和方法。

公开(公告)号：WO1998002765A1

公开(公告)日：1998-01-22

申请号：PCT/US1997011657

申请日：1997-07-11

Applicant: McDONNELL DOUGLAS CORPORATION

Inventor： McDONNELL DOUGLAS CORPORATION ,  JOHNSON, Bartley, Clark

IPC: G02B06/26

CPC classification number: H01Q3/2676 ,  G02B6/2861

Abstract: An optical switch network (10) which includes a plurality N of cascaded optical switching stages, each mth one of the switching stages including 2 Mach-Zehnder interferometers (12) where m = 1 through N. The input port of the Mach-Zehnder interferometer (12) of the first one of the optical switching stages receives an optical input signal, and the 2 Mach-Zehnder interferometers (12) of the Nth one of the optical switching stages provide a total of 2 output ports. Each of the Mach-Zehnder interferometers is preferably an unbalanced Mach-Zehnder interferometer, and the optical input signal preferably has a wavelength which is a selected one of 2 selectable wavelengths. Also disclosed is an optical time delay network (30) comprised of an optical switch network as described above, and a plurality 2 of optical delay lines of different lengths coupled to respective ones of the 2 output ports of the Nth one of the optical switching stages, each of the optical delay lines (30) being comprised of an optical waveguide having a light reflecting end.

Abstract translation: 一种光开关网络（10），其包括多个N级级的光开关级，每个第m个开关级包括m = 1至N的2 m-1> Mach-Zehnder干涉仪（12）。输入端口 第一个光开关级的马赫策德尔干涉仪（12）接收光输入信号，并且第N个光开关级的2 马赫 - 策德尔干涉仪（12）提供总共 的2 个输出端口。 每个马赫策德尔干涉仪优选地是不平衡的马赫 - 策德尔干涉仪，并且光输入信号优选地具有被选择的2个可选择波长中的一个的波长。 还公开了由如上所述的光开关网络组成的光时延网络（30），以及耦合到第N个输出端口的两个输出端口中的不同长度的多个2 N个光延迟线 光开关级中的一个，每个光延迟线（30）由具有光反射端的光波导构成。

公开(公告)号：WO1997047939A1

公开(公告)日：1997-12-18

申请号：PCT/US1997009820

申请日：1997-06-10

Applicant: McDONNELL DOUGLAS HELICOPTER COMPANY

Inventor： McDONNELL DOUGLAS HELICOPTER COMPANY ,  ADAMS, Nathan, G. ,  GEILER, Kal, V.

IPC: F41A13/00

CPC classification number: F41A21/44 ,  F41A13/00 ,  F41A21/34

Abstract: A gun barrel shrouding system (11) is capable of significantly reducing the infrared signature of a gun barrel, without directly cooling the gun barrel. A shroud (21) is placed around the gun barrel, but the shroud (21) does not contact the gun barrel. Air is circulated through the shroud (21) to cool the shroud (21) itself, but the very hot gun barrel is only partially cooled by the air as the air exits the shroud (21). Since the shroud (21) does not contact the gun barrel, the shroud (21) may be manufactured of a lightweight and simple design, and the recoil action of the gun barrel upon firing does not need to be compensated for by the shroud (21).

Abstract translation: 枪管罩系统（11）能够显着降低枪管的红外线特征，而不会直接冷却枪管。 护罩（21）放置在枪管周围，但护罩（21）不接触枪管。 空气通过护罩（21）循环以冷却护罩（21）本身，但是当空气离开护罩（21）时，非常热的枪管仅由空气部分地冷却。 由于护罩（21）不接触枪管，护罩（21）可以由重量轻且简单的设计制造，并且枪管在击发时的反冲作用不需要被护罩（21）补偿 ）。

公开(公告)号：WO1997047173A2

公开(公告)日：1997-12-18

申请号：PCT/US1997009721

申请日：1997-06-03

Applicant: MCDONNELL DOUGLAS HELICOPTER COMPANY

Inventor： MCDONNELL DOUGLAS HELICOPTER COMPANY ,  HARDESTY, Mark, W.

IPC: G01S5/00 ,  G01S5/14 ,  G01S11/02 ,  G01S19/17 ,  G01S19/51

CPC classification number: G01S5/0027 ,  G01S5/009 ,  G01S11/02 ,  G01S19/14 ,  G01S19/41 ,  G01S19/51 ,  G01S19/52 ,  G01S2205/003

Abstract: A portable three-dimensional position and velocity data archiving system for use with an aircraft during flight testing and evaluations. The system includes a ground based system and an airborne system. Each system includes a GPS receiver electrically connected with a GPS antenna for receiving and interpreting GPS signals transmitted from a GPS satellite constellation. Each system also includes a radio communication device for transferring position and velocity data as well as error correction data and guidance cues between the ground and airborne systems. The portable system acquires, processes, archives, and provides precise three-dimensional position and velocity data for the aircraft in real time. Information regarding aircraft position, direction, velocity, acceleration and any correction needs referenced to a selected coordinate system is immediately presented to a vehicle piloting crew on analog as well as digital indicators.

Abstract translation: 一种便携式三维位置和速度数据归档系统，用于在飞行测试和评估期间与飞机一起使用。 该系统包括基于地面的系统和机载系统。 每个系统包括与GPS天线电连接的GPS接收器，用于接收和解释从GPS卫星星座发射的GPS信号。 每个系统还包括用于传送位置和速度数据的无线电通信装置以及地面和机载系统之间的纠错数据和指导线索。 便携式系统实时获取，处理，归档，并为飞机提供精确的三维位置和速度数据。 有关飞机位置，方向，速度，加速度和参考所选坐标系的任何校正需求的信息都将立即显示给车辆驾驶员模拟和数字指示器。

公开(公告)号：WO1997041475A1

公开(公告)日：1997-11-06

申请号：PCT/US1997007098

申请日：1997-04-29

Applicant: MCDONNELL DOUGLAS CORPORATION ,  PILATOS, John, C.

Inventor： MCDONNELL DOUGLAS CORPORATION

IPC: G02B06/44

CPC classification number: G02B6/4446 ,  G02B6/4472

Abstract: A system and method to fanout, breakout and splice into optical fibers in a ribbon cable trunkline extending throughout an aircraft with optical minimal loss. Boxes are positioned at strategic locations along the aircraft's fiber optic trunkline. Within each box, one or more fanout cable assemblies are supported and terminated whereby the optical fibers in the ribbon cable are transitioned into individually jacketed fibers for connection to separate locations. When an optical fiber circuit needs to be broken out at the location of a particular box, the proper individually jacket fiber is cut and the end that results is permanently connected to a breakout connector, also positioned through the box, so that the optical circuit appears on the breakout connector outside the box where a mating connector can be used to further route the optical circuit being broken out.

Abstract translation: 在整个飞机延伸的带状电缆干线中扇出，突破和拼接光纤的系统和方法，光学损耗最小。 箱子位于飞机光纤干线的战略位置。 在每个盒子内，一个或多个扇出电缆组件被支撑和终止，由此带状电缆中的光纤被转换成单独的夹套光纤以连接到分开的位置。 当光纤电路需要在特定盒子的位置断开时，适当的单独的护套纤维被切割，并且结果永久地连接到也通过盒子定位的断路连接器，使得光电路出现 在盒子外部的断路连接器上，可以使用配合连接器来进一步布线被断开的光路。