Abstract: A control augmentation system for stabilization and control of flight vehes, wherein control of vehicle angular velocities in proportion to control input is effected, and where stabilization of the corresponding vehicle attitude is also effected. The system consists of both feedforward and feedback signal paths. The feedback paths provide augmentation of the vehicle's inherent stability. The feedforward paths augment the controllability factors available to the pilot. The control augmentation system is a solution to hingeless rotor control problems.

Abstract: An improved circuit utilized in an RF tuner or receiver for selecting and nverting an RF signal to an intermediate frequency with reduced injection power requirements.The circuit is utilized in the "front end" of a radio frequency receiver or tuning section, the purpose being to convert the received RF signal to an intermediate frequency. The improved circuit comprises and includes a diode sampling bridge coupled to an RF signal receiving source, such as an antenna, a local oscillator coupled across the bridge providing pulses for actuating and turning on particular diodes of the bridge for a relatively short length of time. The bridge output is coupled to a selecting transistor, which may include a crystal filter coupled to the emitter of the transistor. The pulsing signal across the diode bridge is relatively short in comparison with the received RF signal. When the diode sampling bridge is conducting, the RF signal is mixed and passed to the selecting transistor base.

Abstract: A method of fabricating semiconductor devices having a long lifetime for the minority charge carriers by applying a voltage across one electrode composed of a piece of intrinsic semiconductor material and another electrode composed of an alloy including an impurity. The two electrodes are moved into proximity to cause an arc to be drawn therebetween which etches out a region of the semiconductor and in turn vaporizes the alloy which is deposited and implanted in the etched region to form a junction device. In one form of device produced in accordance with the process a series of regions alternately of opposite conductivity (P and N) type are formed on the semiconductor in spaced relationship and the device is positioned in electrical contact with the surface of a semiconductor dielectric waveguide.

Abstract: A charge coupled device (CCD) wherein clocking or charge transfer at relatively high frequencies is obtained by the use of a slow-wave structure in the form of a metallized meander line fabricated on a relatively thin region of silicon dioxide contiguously formed on the surface of a silicon semiconductor substrate.

Abstract: An electron tube for use as a traveling-wave tube or the like comprises an longated housing having a central evacuated passageway therethrough and a plurality of annular magnets and circuit means supported within said housing at predetermined spaced locations along the length of said passageway within said housing. Preferably, the housing comprises a pair of generally semi-cylindrical mating ceramic substrate halves, each half including semi-annular grooves along the interior thereof which mate with respective semi-annular grooves of the other half to define annular grooves in which said magnets may be positioned or formed and annular portions of said circuit means may be deposited. Preferably, the respective ceramic substrate halves also have guide paths established therein for the reception of conductive material deposited therein to form the interconnecting portions of said circuit means.

Abstract: An edge-guided mode microstrip device similar to an edge-guided mode isolr having opposed straight and tapered edges along which microwave energy is adapted to travel with the exception that in the subject invention the thickness of the ferrite substrate underlying one tapered edge is abruptly changed in order to obtain mismatch thereat causing energy traveling along said one tapered edge to be reflected back along the same edge to the port whence it came. Coupling a microwave power amplifier to a port of a microwave circulator by means of a respective power reflector according to the subject invention provides a simple yet effective power combiner for microwave signals.

Abstract: An edge-guided mode microstrip device having a pair of input ports and a mon output port, with two separate ferrite substrates each having a microstrip conductor electrically connected between a respective input port and the common output port. Both microstrip conductors additionally each have a conductive or inner edge spanned by a resistive film which acts as a resistive load. The other or outside conductive edge of each of the conductors includes an exponentially tapered segment which when a predetermined biasing magnetic field is applied transversely relative to the field of the substrates, causes input microwave energy at the two input ports to travel along the respective exponentially tapered edges and combine at the common output port. Any reflective energy returning from the output port will travel along the inner edges and be absorbed in the resistive load.

Abstract: A system employing broadband radio frequency vector multipliers in a balang process for nulling out unwanted radio frequency signals. The nulling is achieved by adjustment of both the desired and interference signals as they pass through the system. The adjustment is accomplished by using vector multipliers which shift the phase by equal amounts and vary the amplitude by proportionate amounts of one or more radio frequency signals in response to separate phase shift and amplitude control forces. To obtain a desired phase shift, an incoming radio frequency signal is split into 0.degree. and 90.degree. components. By multiplying the 0.degree. component by the cosine of the desired phase shift angle, multiplying the 90.degree. component by the sine of the desired phase shift angle, and then summing the results, the signal can be phase shifted by any amounts through all four quadrants.

Abstract: A rotary bucket wheel is positioned beneath and communicates with a water lumn of collected rain. When the water column exceeds a certain height, as determined by an electronic probe circuit, the bucket wheel is actuated whereby a predetermined volume of water is removed from the bottom of the water column.

Abstract: A semiconductor is positioned as the anode of an electron tube, and is borded with a radio-frequency modulated stream of electrons. This bombardment produces carrier pairs in the semiconductor in a well known manner. However, in this case the carrier pairs are bunched, in the same manner as the modulating electrons, as they are drawn through the semiconductor by its bias voltage. A radio-frequency coil or meander line adjacent to the semiconductor interacts with the bunched carrier pairs traveling through the semiconductor -- in the same manner as the radiofrequency coil of a traveling wave tube interacts with the electrons of a traveling wave tube, as they become bunched -- to produce an amplified r-f signal in the coil.