公开(公告)号：US6085077A

公开(公告)日：2000-07-04

申请号：US816951

申请日：1997-01-21

申请人： Timothy W. Fields ,  Daniel R. Zahirniak ,  David L. Sharpin

发明人： Timothy W. Fields ,  Daniel R. Zahirniak ,  David L. Sharpin

IPC分类号： H03H17/02 ,  H04B1/16 ,  H04B1/10

CPC分类号： H04B1/16 ,  H03H17/0266

摘要： The present invention documents a digital channelized receiver for signal intercept applications. A hardware efficient implementation of a uniform filter bank in which the number of filters, K, is greater than the decimation factor, M, is provided. By optimizing the filter bank frequency response, in conjunction with K and M, the proposed invention allows a simple channel arbitration logic to be implemented. In addition, the present invention provides reliable instantaneous frequency measurements and parameter estimates across the desired frequency range while reducing the data processing speed requirements by a factor of M.

摘要翻译： 本发明记录了用于信号截取应用的数字信道化接收机。 提供了滤波器数K大于抽取因子M的均匀滤波器组的硬件有效实现。 通过优化滤波器组频率响应，结合K和M，所提出的发明允许实现简单的信道仲裁逻辑。 此外，本发明在期望频率范围内提供可靠的瞬时频率测量和参数估计，同时将数据处理速度要求降低一个因子M.

公开(公告)号：US3928816A

公开(公告)日：1975-12-23

申请号：US47850174

申请日：1974-06-12

申请人： US AIR FORCE

发明人： HARTWICK THOMAS S ,  HODGES JR DEAN T

IPC分类号： H01S3/03 ,  H01S3/08

CPC分类号： H01S3/0315

摘要： A far infrared (FIR) laser is provided which uses a dielectric or metal tube waveguide resonator. A CO2 or CO waveguide laser is utilized to pump the FIR laser.

摘要翻译： 提供了使用电介质或金属管波导谐振器的远红外（FIR）激光器。 CO2或CO波导激光器用于泵浦FIR激光器。

公开(公告)号：US3927349A

公开(公告)日：1975-12-16

申请号：US46023074

申请日：1974-04-11

申请人： US AIR FORCE

发明人： SUHREN GLEN D ,  TRUE III CHARLES W

IPC分类号： H02M1/08 ,  H05B39/06 ,  H05B37/00

CPC分类号： H05B39/06 ,  H02M1/083 ,  Y10S315/04

摘要： A SCR light dimmer apparatus to control the brilliance of high wattage incandescent lamps from a 400 Hz supply without generating any substantial amount of radio interference.

摘要翻译： 一种SCR光调光装置，用于控制来自400 Hz电源的高功率白炽灯的亮度，而不会产生任何大量的无线电干扰。

公开(公告)号：US3926520A

公开(公告)日：1975-12-16

申请号：US48808474

申请日：1974-07-12

申请人： US AIR FORCE

发明人： KAUFMAN IRVING

IPC分类号： G03B27/72 ,  G03B27/76

CPC分类号： G03B27/725

摘要： A system for controlling the contrast of light intensities falling upon a photosensitive surface after being transmitted through a transparency. Polarized light passes the transparency to a partially silvered mirror which reflects a portion of the light to an array of photosensors and also transmits a portion of the light to a ferroelectric plate. The photosensitive array and the ferroelectric plate are simultaneously scanned. At each scanning position of the photosensitive surface an electrical signal is caused to be applied to the corresponding scanned position of the ferroelectric plate, the intensity being controlled by a variable amplifier. The controlled light passing from the ferroelectric plate is transmitted through a polarizer to the photosensitive surface.

公开(公告)号：US3926029A

公开(公告)日：1975-12-16

申请号：US46571174

申请日：1974-04-30

申请人： US AIR FORCE

发明人： ABSON DAVID J ,  GURNEY FERDINAND J

IPC分类号： B21J13/02 ,  B21K29/00

CPC分类号： B21J13/02 ,  B21K29/00

摘要： A heated die assembly designed to bolt onto a conventional hydraulic forge press. The heated die assembly is made of a laminated, load bearing insulating stack to which is attached a plurality of split heater blocks. The blocks contain semicylindrical grooves and bolt around cartridge heaters. Bolt-on die face plates are removably mounted on the heater blocks and are readily interchangeable for a variety of forging operations.

摘要翻译： 设计用于螺栓固定在常规液压锻压机上的加热模组件。 加热的模具组件由层叠的承载绝缘堆叠制成，多个分开的加热器块附接到该堆叠。 这些块包含半圆柱形槽和螺栓围绕筒式加热器。 螺栓模具面板可拆卸地安装在加热器块上，并且可以容易地互换用于各种锻造操作。

公开(公告)号：US3920336A

公开(公告)日：1975-11-18

申请号：US47193174

申请日：1974-05-21

申请人： US AIR FORCE

发明人： SACKETT PHILIP B

IPC分类号： G01N21/03 ,  G01N21/64 ,  G01N21/24

CPC分类号： G01N21/0303 ,  G01N21/645 ,  G01N2201/065

摘要： A system for intensifying weak absorption and allowing the measurement of weak light emission in materials including a source of light, and a material-containing cavity having a highly reflective coating on its diffusely-reflecting inner surface. The cavity has an entry port for light and a port for a detecting instrument which is connected to an appropriate analysis or display system.

摘要翻译： 一种用于增强弱吸收并允许测量包括光源的材料中的弱光发射的系统，以及在其漫反射内表面上具有高反射涂层的含材料腔。 腔体具有光入口和用于检测仪器的端口，其连接到适当的分析或显示系统。

公开(公告)号：US3920206A

公开(公告)日：1975-11-18

申请号：US49493474

申请日：1974-08-05

申请人： US AIR FORCE

发明人： BIGHAM CARROLL R ,  BARRIE RONALD E

IPC分类号： B64C3/26

CPC分类号： B64C3/26

摘要： A connector assembly adapted for use in structurally forming an airfoil, without the use of skin surface penetrating fasteners to join the chordwise disposed ribs to the airfoil skin surface. The connector assembly includes: a plurality of ridges (or knobs) on the inner surface of the airfoil skin; a plurality of flanges (or surface stiffeners), also on the inner surface of the airfoil skin, and interposed between the ridges; and, a plurality of trihedral angle-like configurated clips, one each of which is snugly fitted or wedged between one of the flanges and the adjacent ridge. The connector assembly eliminates the present day necessity of penetrating the airfoil skin with holes and fasteners; and, thereby, eliminates or significantly reduces the stress concentration, and greatly improves the fatigue life, the weight, and the cost factors involved.

摘要翻译： 适用于在结构上形成翼型件的连接器组件，而不使用皮肤表面穿透紧固件将弦向布置的肋条连接到翼型件皮肤表面。 连接器组件包括：在翼型表皮的内表面上的多个脊（或旋钮）; 多个凸缘（或表面加强件），也位于翼型表皮的内表面上，并插入在脊之间; 以及多个三面角形构造的夹子，其中的每一个被紧密地装配或楔入其中一个凸缘和相邻的凸脊之间。 连接器组件消除了当今日常需要用孔和紧固件穿透翼型皮肤的必要性; 从而消除或显着降低应力集中，大大提高疲劳寿命，重量和成本因素。

公开(公告)号：US3913018A

公开(公告)日：1975-10-14

申请号：US36690973

申请日：1973-06-04

申请人： US AIR FORCE

发明人： RASMUSSEN LYLE E

IPC分类号： G01R29/08 ,  H04B1/10

CPC分类号： G01R29/0871

摘要： A time sharing demodulation system for radiometers using a pair of parallel field effect transistor channels, one of which is preceded by an inverter with the pair of channels being followed by an integrator. The field effect transistors are driven by a pair of drive signals each having a periodic square wave with the repetition frequency of a single time shared radiometer signal and having a pulse width equal to a time shared interval. The pair of drive signals are 180* out of phase with each other.

公开(公告)号：US3909145A

公开(公告)日：1975-09-30

申请号：US45569074

申请日：1974-03-28

申请人： US AIR FORCE

发明人： AYER FRANCOIS N ,  COTTER RICHARD B ,  CHAMBERS RICHARD E

IPC分类号： E01C9/08 ,  E01C5/00 ,  E01C3/00

CPC分类号： E01C9/08

摘要： A panel grid module construction system designed to be rapidly emplaced over subgrades for load bearing purposes including an interlocking grid-beam network, and panels adapted to be dropped into the grid network where they are locked and sealed into position.

摘要翻译： 一种面板网格模块施工系统，设计用于负载承载目的的快速放置，包括互锁网格梁网络，以及适于落入网格网络中的面板，其中它们被锁定和密封就位。

公开(公告)号：US3903489A

公开(公告)日：1975-09-02

申请号：US41589473

申请日：1973-11-14

申请人： US AIR FORCE

发明人： SCHUBERT DAVID C

IPC分类号： H01P1/14

CPC分类号： H01P1/14

摘要： A plasma waveguide switch is provided which permits triggering with both the cathode and waveguide grounded. An anode and a slotted grid are made to act as part of the walls of the waveguide for RF purposes while being isolated from the waveguide with respect to DC and video signals.

摘要翻译： 提供等离子体波导开关，其允许触发阴极和波导接地。 阳极和开槽网格被制成用作射频目的的波导壁的一部分，同时相对于直流和视频信号与波导隔离。