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公开(公告)号：US3842654A
公开(公告)日：1974-10-22
申请号：US33253973
申请日：1973-02-14
申请人： US AIR FORCE
发明人： BECHTEL T
CPC分类号： G01N25/00
摘要： A sample is constrained between a support and a rigid member. Two spaced load measuring means extend outwardly from the outer surface of the rigid member to another support which is linked to the first support by a rigid base. The application of heat to the constrained sample generates stress which is measured by the load measuring means to indicate the direct thermal stress line load (NT) and the thermal stress moment (MT).
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公开(公告)号：US3842352A
公开(公告)日：1974-10-15
申请号：US27194472
申请日：1972-07-14
申请人： US AIR FORCE
发明人： COTE W
摘要： Time diversity utilizing a single RF channel is achieved by duplicating the information bearing signal to be transmitted, delaying one duplicate signal, multiplexing the delayed and undelayed signals on an RF carrier and transmitting the multiplexed signal to a remote receiving station. At the receiving station the received signal is demultiplexed and the undelayed duplicate signal is delayed to bring it into time coincidence with the delayed duplicate signal. Subsequent combining of these signals provides a signal that is not subject to information loss due to fade or other interference for periods equal to or less than the delay time. A third delayed duplicate signal is also comprehended that obviates the effects of short and intermittent recovery time. In the preferred embodiment analog signals are transmitted by apparatus utilizing audio frequency delay lines and frequency division multiplexers and demultiplexers.
摘要翻译： 利用单个RF信道的时间分集通过复制要发送的信息承载信号，延迟一个重复信号，在RF载波上复用延迟和未延迟的信号并将多路复用的信号发送到远程接收站来实现。 在接收站处，接收到的信号被解复用，并且延迟的未延迟的重复信号被延迟以使其与延迟的重复信号达到时间一致。 这些信号的后续组合提供了在等于或小于延迟时间的周期内由于衰落或其他干扰而不会受到信息丢失的信号。 还可以理解第三个延迟重复信号，从而避免短暂和间歇恢复时间的影响。 在优选实施例中，模拟信号通过使用音频频率延迟线和频分复用器和解复用器的装置传输。
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公开(公告)号：US3842262A
公开(公告)日：1974-10-15
申请号：US41585673
申请日：1973-11-12
申请人： US AIR FORCE
IPC分类号： H01L31/00 , H01L31/0203 , H01J5/02
CPC分类号： H01L31/00 , H01L31/0203
摘要： A small, easily constructed, high speed, coaxially connected, photodiode mount is constructed by modifying two conventional seven-millimeter coaxial connectors so as to position the diode in the end of one connector. The flanges of the connectors are positioned in back-to-back relationship with insulation between them to form a coupling capacitor. The photodiode bias potential is impressed on the photodiode by making electrical connections to the flanges. A coaxial cable signal lead is conventionally connected to the other flange. The mount is held in a light and electric field shielding tube by insulating screws through holes in the flanges.
摘要翻译： 通过修改两个常规的7毫米同轴连接器来构造小型，容易构造的高速同轴连接的光电二极管安装座，以将二极管定位在一个连接器的末端。 连接器的凸缘与它们之间的绝缘位置背对背地形成耦合电容器。 通过与法兰的电连接将光电二极管偏置电位施加在光电二极管上。 同轴电缆信号引线通常连接到另一个凸缘。 通过使法兰上的孔绝缘螺钉将安装座固定在光和电场屏蔽管中。
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公开(公告)号：US3835416A
公开(公告)日：1974-09-10
申请号：US34081073
申请日：1973-03-13
申请人： US AIR FORCE
发明人： SCHLOSSBERG H , FETTERMAN H , WALDMAN J
CPC分类号： H01S3/1061
摘要： A tunable off resonant optically pumped laser system in which a high power pulsed laser is utilized to optically pump a molecular gas having a vibrational absorption band near the laser frequency. The electric field of the pumping laser is at least as great as a predetermined strength so that upon the application of a D.C. electric field on the absorbing gas the resultant submillimeter laser oscillation is capable of being tuned.
摘要翻译： 一种可调谐的共振光泵浦激光系统，其中使用高功率脉冲激光器来在激光频率附近对具有振动吸收带的分子气体进行光学泵浦。 泵浦激光器的电场至少与预定的强度一样大，因此当在吸收气体上施加直流电场时，所得的亚毫米波激光振荡能够被调谐。
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公开(公告)号：US3835330A
公开(公告)日：1974-09-10
申请号：US28969372
申请日：1972-09-15
申请人： US AIR FORCE
摘要： An electromagnetic implosion X-ray source having a thin cylindrical metal foil supported on spaced electrodes within an evacuated chamber. The electrode system is connected through a switch to a capacitor bank power supply with low inductance leads and with the average electrical impedance of the dynamic plasma being matched to the impedance of the power supply. An X-ray radiation path is provided between the X-ray source and a sample holder attached to the X-ray source.
摘要翻译： 电磁内爆X射线源，其具有支撑在抽真空室内的间隔电极上的薄的圆柱形金属箔。 电极系统通过开关连接到具有低电感引线的电容器组电源，并且动态等离子体的平均电阻抗与电源的阻抗匹配。 在X射线源和附着于X射线源的样品架之间设置有X射线辐射路径。
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公开(公告)号：US3834834A
公开(公告)日：1974-09-10
申请号：US33872673
申请日：1973-03-07
申请人： US AIR FORCE
发明人： QUINN B
摘要： A thrust augmentation system having thrust augmentation channels with the reservoir length absorbed in the inlet length and with a plurality of root nozzles positioned at the inlet to mixing duct transition region together with a plurality of hypermixing nozzles extending substantially across the width of the ejector duct.
摘要翻译： 具有推力增加通道的推力增加系统，其中储存器长度被吸收在入口长度中，并且多个根部喷嘴位于入口处以混合管道过渡区域以及基本上跨过喷射器管道的宽度延伸的多个超混合喷嘴。
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公开(公告)号：US3831264A
公开(公告)日：1974-08-27
申请号：US33479373
申请日：1973-02-22
申请人： US AIR FORCE
发明人： TERRELL O
CPC分类号： B21D39/042 , F16L13/00 , F42B25/00 , Y10T29/49927 , Y10T29/49929
摘要： Two substantially similar metal parts are connected by forming a male configuration at the end of the first metal part forming a complementary female configuration at the end of the second substantially similar metal part; flaring the female configurated end of the first part to accept the male configurated end of the second part; positioning the two parts so that they are disposed female end to male end, and also so that they are axially aligned; inserting the male configurated end of the first part into the female configurated end of the second part, while maintaining axial alignment of the parts, whereby the two configurated ends are releasably engaged; and, squeezing the flared female end, whereby the two configurated ends are mated. As a result, a positive, permanent, and interlocking joint is formed, and the two substantially similar metal parts are permanently and reliably connected inexpensively, simply, and quickly. This method is exceptionally well-suited for use during the manufacture of a spherical bomblet, which comprises two similar metal hemispheres which are filled with explosive, in connecting the respective free and open end of each of the two similar and explosive-filled metal hemispheres, and thereby preventing the pinching, and the subsequent inadvertent and unintended detonating, of the explosive.
摘要翻译： 两个基本相似的金属部件通过在第二金属部件的端部处形成互补的凹形结构的第一金属部件的端部处形成凸形结构来连接; 扩大第一部分的雌性构型端以接受第二部分的雄性构型端; 定位两个部分，使得它们被设置为阴端到阳端，并且也使得它们轴向对齐; 将第一部分的阳构造端插入第二部分的阴配置端，同时保持部件的轴向对准，由此两个构造端部可释放地接合; 并且挤压扩口的阴端，由此两个配置的端部配合。 结果，形成了正的，永久的和互锁的接头，并且两个基本相似的金属部件被简单且快速地永久且可靠地连接成本。 该方法非常适合于在制造球形炸弹时使用，球形炸弹包括两个类似的金属半球，其充满爆炸物，连接两个相似和爆炸性填充的金属半球中的每一个的相应自由和开放端， 从而防止爆炸物的夹紧和随后的无意和无意的爆震。
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公开(公告)号：US3827911A
公开(公告)日：1974-08-06
申请号：US33450373
申请日：1973-02-21
申请人： US AIR FORCE
发明人： PICKETT D
摘要： A METHOD OF PREPARING NICKEL ELECTRODES IS PROVIDED IN WHICH A POROUS NICKEL PLAQUE, POSITIONED BETWEEN TWO NICKEL SHEETS, IS IMMERSED IN AN ALCOHOLIC SOLUTION OF NICKEL NITRATE OR A MIXTURE OF NICKEL NITRATE AND COBALT NITRATE. AFTER CONNECTING THE PLAQUE TO THE NEGATIVE POLE AND THE SHEETS TO THE POSITIVE POLE OF WATER SOURCE, A DIRECT CURRENT IS PASSED THROUGH THE SOLUTION FOR A TIME SUFFICIENT TO CONVERT THE NITRATE, WHICH HAS IMPREGNATED PORES OF THE PLAQUE, TO THE CORRESPONDING HYDROXIDE. A NICKEL ELECTRODE SO PREPARED IS PARTICULARLY USEFUL AS THE POSITIVE ELECTRODE IN NICKEL-CADMIUM BATTERIES.
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公开(公告)号：US3824502A
公开(公告)日：1974-07-16
申请号：US35025773
申请日：1973-04-11
申请人： US AIR FORCE
发明人： BARDASH I , SCHLOTTERHAUSEN C
CPC分类号： H01P1/195
摘要： A nonreciprocal latching phase shifter that is compensated for changes in temperature. A pair of ferrite rectangular toroids in series connection are inserted into a rectangular waveguide and a dielectric material is inserted within the toroids with a magnetizing wire centrally disposed within the dielectric material and connected to a source of magnetizing current outside the waveguide. The ferrite material of one of the pairs of toroids has a remanent magnetization that increases with increasing temperature while the other of the pair has a remanent magnetization that decreases with increasing temperature.
摘要翻译： 一个补偿温度变化的不可逆锁存移相器。 将一对串联的铁氧体矩形环形线圈插入到矩形波导中，并且将电介质材料插入到环形线圈内，其中磁化线集中布置在电介质材料内并连接到波导外部的磁化电流源。 一对环形线圈中的一个的铁氧体材料具有随着温度升高而增加的剩余磁化强度，而另一对磁芯具有随着温度升高而降低的剩磁。
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公开(公告)号：US3816586A
公开(公告)日：1974-06-11
申请号：US23663272
申请日：1972-03-21
申请人： US AIR FORCE
发明人： GOOSEY B
IPC分类号： C04B35/645 , C04B35/62
CPC分类号： C04B35/645
摘要： A METHOD IS PROVIDED FOR FABRICATING ARTICLES OF BORON SUBOXIDE AND OTHER BORON-OXYGEN COMPOSITIONS IN WHICH A MIXTURE OF BORON AND BORIC OXIDE IS INITIALLY COMPRESSED IN A METAL DIE LINE SUCCESSIVELY WITH SHEETS OF GRAPHITE AND TANTALUM. AFTER RELEASE OF THE PROCESS ON THE GRAPHITE ING COMPACTED ARTICLE, IT IS COVERED WITH A LAYER OF A MIXTURE OF BORON NITRIDE AND BORIC OXIDE. THE COMPACTED ARTICLE COATED WITH THE AFOREMENTIONED MIXTURE IS THEN SUBJECTED TO A SECOND COMPRISING STEP IN THE LINED DIE WHILE HEATING THE DIE AT A TEMPERATURE SUFFICIENT TO MELT THE BORIC OXIDE IN THE COMPACTED ARTICLE. AFTER ALLOWING THE DIE TO COOL, THE COMPACTED ARTICLE, NOW COATED WITH BORON NITRIDE, IS REMOVED FROM THE METAL DIE AND PLACED IN A GRAPHITE DIE COATED WITH BORON NITRIDE AND LINED WITH A SHEET OF TANTALUM. WHILE COMPRESSING THE COMPACTED AND COATED ARTICLE IN THE GRAPHITE DIE AT INCREASING PRESSURE, THE DIE IS HEATED IN AN INERT ATMOSPHERE OR UNDER A VACUUM. AFTER PERMITTING THE GRAPHITE DIE TO COOL, THE COMPACTED AND COATED ARTICLE IS REMOVED THEREFROM. AN ARTICLE OF BORON SUBOXIDE OR OTHER BORON-OXYGEN COMPOSITION IS THEN OBTAINED AFTER REMOVAL OF THE BORON NITRIDE COATING.
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