Abstract:
Improvement features in ''''rolamite'''' type precision rolling suspension are taught, such a ''''rolamite'''' being known in the art as comprising cylindrical rollers held captive within a roller cage, between the S-shaped bends of a roller band therein. These features relate to ''''double rolamites'''' particularly involving two pairs of such rollers and especially ''''linear rolamites'''' adapted for unidirectional motion. Other features include arranging a plurality of rolamite/cage assemblies in a single operative combination; adapting a rolamite cage as part of an actuated load structure; arranging one, or several, ''''drivemagnets'''' along the roller-track of a rolamite assembly for prescribed magnetic attraction of the rollers and, thus, the magnetic incrementing thereof; and providing an array of detectcells along such a roller-track to monitor incremental movements of the band and roller assembly.
Abstract:
A method and apparatus for reducing output noise from a gyro having a spinning inertial element surrounded by gas. The mass of gas spinning with the rotor is minimized by shrouding the rotor. Particular shrouding reduces the Reynolds number of the gas proximate the rotor thereby producing a steady laminar gas flow within the gyro gimbal; the elimination of unsteady turbulent flow within the gimbal is accompanied by considerable noise reduction.
Abstract:
A plated wire thin film memory assembly and fabrication method is shown and described wherein the plated wire is contained in a ''''tunnel structure'''' sandwiched between layers of a multi-layer printed circuit assembly.
Abstract:
AN INEXPENSIVE AND SIMPLY CONSTRUCTED BATTERY, HAVING GOOD STORAGE PROPERTIES PRIOR TO USE. THE BATTERY IS COMPRISED OF AN ANODE, CATHODE, AND A SEPARATOR LOCATED WITHIN A FIRST PLASTIC POUCH. ALSO WITHIN THE FIRST POUCH IS A SECOND INNER POUCH CONTAINING A SOLUTION OF ELECTROLYTE CHEMICALS. FOR ACTIVATION OF THE BATTERY THE INNER POUCH IS RUPTURED, THEREBY BRINGING THE ELECTROLYTE INTO CONTACT WITH THE REMAINING ACTIVE ELEMENTS OF THE BATTERY. A PROTION OF THE OUTSIDE POUCH IS FORMED OF A GAS PERMEABLE MEMBRANE TO ALLOW DISSIPATION OF GAS AND THEREBY PREVENT BURSTING OF THE BATTERY. TO PREVENT OR MINIMIZE THE LIKELIHOOD OF DIRECT CONTACT BY THE LIQUID ELECTROLYTE WITH THE PERMEABLE MEMBRANE, A LABYRINTH COMPRISED OF A PAIR OF OVERLAPPING BAFFLES IS INTERPOSED BETWEEN THE BATTERY AND THE PERMEABLE MEMBRANE.
Abstract:
A PROCESS IS DESCRIBED FOR PREPARING OR TREATING MERCURY CADMIUM TELLURIDE (HG1-XCDXTE) WHEREIN THE MATERIAL IS SUBJECTED TO TWO SEPARATE HEAT TREATMENT STEPS. THE TREATMENT IMPROVES INFERIOR OR MEDIOCRE INFRARED RADIATION DETECTOR MATERIAL IN A CONTROLLED MANNER WITHOUT ADVERSELY AFFECTING ORGINALLY GOOD MATERIAL THEREBY INCREASING PROCESS YIELD AND REPRODUCIBILITY.
Abstract:
The arrangement provides a novel method of selectively monitoring the hunt frequency of the synchronous spin motors of several gyros to determine the proper operation of the selected gyro. Two signals are used from each gyro for such monitoring action: (1) the phased winding voltage, and (2) the spin motor excitation voltage, of the split phase or two phase motor that drives the gyro rotor. Summing of the phased winding voltage and the excitation voltage for the line winding produces an amplitude modulated carrier wave, modulated proportional to the hunt phase shift of the rotor. The resultant modulation envelope is detected, filtered, band pass amplified and thereafter converted to a threshold logic voltage for an indication that the gyro spin motors are at synchronous speed.
Abstract:
A beam addressed optical mass memory utilizes an alterable memory medium which exhibits a change in its optical properties as a function of time or as a function of write-rewrite cycles. A reference bit is recorded on the memory medium and one or more information bits are similarly recorded. The reference and information bits are subjected to essentially the same number of write-rewrite cycles, and therefore exhibit essentially identical changes in optical properties. Information is read out by sequentially directing the light beam to the reference bit and the information bits. A detector produces a reference signal indicative of the intensity of the light beam received from the reference bit and produces information signals indicative of the intensity of the light beam from each of the information bits. The reference signal is directed to a reference channel and temporarily stored. Each of the information signals is directed to an information channel. The reference signal is compared to each of the information signals and readout signals are produced which are indicative of the difference between or the ratio of the reference signal and each of the information signals.
Abstract:
An optical mass memory utilizing a rotatable substrate is provided with improved tracking. An interferometer measures the distance between a reflective edge surface on the rotatable substrate and a reflective surface on a movable arm. The final lens for focusing the read-write light beam to a focused light spot on the memory medium is mounted on the movable arm. The electrical signal produced by the interferometer is compared to a track selection signal which is indicative of the desired distance between the reflective edge surface and the reflective surface, and a servo control signal is produced which is indicative of the difference of the electrical signal and the track selection signal. The movable arm is positioned in response to the servo control signal.
Abstract:
Circuitry for processing range, azimuth, and altitude data for determining time-to-collision (tau) between helicopters or other aircraft. Range data and azimuth data is received and stored in a fast, variable increment range register and fast azimuth registers respectively. Range data received at high rates is then transferred to two sets of slow registers in accordance with the azimuth and relative altitude of the range data. Results of successive sets of interrogations are compared to detect changes in range corresponding to a predetermined range of tau values.