Abstract: An aircraft center of gravity and fuel level advisory system connected to the aircraft's fuel tank gauges and operated by an aircraft personnel. The system provides the aircraft's personnel with real time display of the aircraft's center of gravity and a signal when forward and aft center of gravity limits are approached. The system provides a means for a crew member to select a fuel level for a tank or set of tanks and when the actual fuel level approaches the selected value, the system will alert the crew member.

Abstract: A star pattern within the field of view is transmitted through a non-collinear acousto optic filter and is focused upon the input screen of a vidicon, which in turn is coupled to input storage devices of a computer, each device being associated with a particular frequency band within the spectrum of light being examined. The contents of the input storage devices are compared with binary data within a star catalog which contains geometric reference patterns of stars and their frequency signatures. When a correlation signal is produced by the comparator, an output signal indicating the position of the pattern in the sky may be produced by a dictionary which could form part of the computer or be remotely located with respect to the computer.

Abstract: A system for programming a time-of-use meter register includes a portable programmer removably coupled to the register, a computer for compiling time-of-use rate schedules, and a computer interface device for removably connecting the computer and the portable programmer. An operator commands the computer to transmit a plurality of rate schedules from the computer over the computer interface device to the portable programmer where they are stored in RAM memory. Field personnel then optically couple the programmer to the register, and initiate a transfer of the rate schedule from programmer RAM to the register.

Abstract: Methods and apparatus are provided for qualitative and quantitative analysis utilizing the Raman effect. Analyses are obtainable without exercise of human judgment or human interpretation. Analyses may be obtained on-line in the field or in a laboratory. A wide range of fluids and solids are capable of rapid routine analysis without major adjustment of equipment. An analysis is obtained by comparing a Raman spectrum of the unknown sample to Raman spectra of samples whose analysis is known. The known Raman spectra are stored in computing means in digital form and the comparison is accomplished by the computing means.

Abstract: In an ATC apparatus, an ROM stores a plurality of parameters used for identification of an ATC signal. These parameters are sequentially read out from the ROM and applied to a ring-arithmetic type frequency pattern generating circuit to be converted into a plurality of pulse trains having respective reference frequencies. These pulse trains are then sequentially applied to a ring-arithmetic type frequency comparison circuit and are compared with the frequency-modulated ATC signal in a time division mode so as to identify the speed limit indicated by the ATC signal. The frequency pattern generating circuit generates also a pulse train corresponding to the speed limit. The frequency comparison circuit executes also comparison between the frequency of the pulse train indicative of the speed limit and that of a pulse train indicative of the detected train speed, and an ATC brake instruction signal is generated when the result of comparison proves that the detected train speed exceeds the speed limit.

Abstract: An integrated circuit is operated under predetermined conditions. The operating integrated circuit is scanned by an ultrasonic beam. Ultrasonic images obtained by the scanning operation are stored into memories, mutually computed, and finally displayed by a color display.

Abstract: Signals provided by probes (1, 2, 3) disposed in the gas stream of a gas turbine engine are classified in accordance with discriminators (Tables 2-9) utilized in various routines (FIGS. 25-56), including some discriminators which are not currently used, but may allow further discrimination of additional signals, when recognized. The categories of waveshapes (FIGS. 57-80) which are classified includes categories (FIGS. 70 and 71) which are readily distinguishable but have not as yet been correlated to engine events, thereby providing a data history base in the event they become correlated and aiding in the discrimination of these signals from other, correlated signals.

Abstract: The waveforms (FIGS. 57-80) of signals derived from electrostatic probes (1, 2, 3) are classified (FIG. 9) in terms of width (FIG. 14), presence or absence of following peaks (FIG. 15), presence of multiple peaks (FIG. 21), frequency content (FIG. 22), and noise content of a portion thereof (FIG. 23) as well as polarity utilizing routines related to the various probes (FIGS. 10-12).

Abstract: The wave shapes (FIGS. 57-80) of signals derived from electrostatic probes (1, 2, 3) disposed in the gas stream of a gas turbine engine are classified (FIG. 9) into categories relating to engine and other events, and are further correlated or discriminated by other conditions of the engine. Engine acceleration and the sign thereof (FIG. 4) are utilized to correlate and discriminate acceleration and deceleration (FIG. 81). Power lever angle (68, FIG. 1) is utilized (FIG. 4A) to provide an indication of afterburner being lighted, a flameholder probe (27, FIG. 1) becomes biased (82, 83, 85, FIG. 1) to sense when the afterburner is lit, for correlation with afterburner nozzle liner erosion (FIG. 69, FIG. 81). Chopping the fuel to the afterburner is correlated (FIG. 4A, FIG. 81) with signals indicative of the character of the afterburner chop (FIGS. 77-79).

Abstract: When the number of signals derived from electrostatic probes (1, 2, 3) disposed in the gas stream of an engine reaches a certain value (M, FIG. 8) an additional, N, number of records are acquired (FIGS. 5 and 8) to provide a classification group of records for classification (FIG. 9) into categories indicative of the engine event likely to have caused the excessive number of signals.

Abstract: In a drilling rig of drill depth conventional structure, parameters of interest (e.g. rate of penetration and drill bit location, number of stands, monkey board position) are calculated and displayed by a unified electronic system. A weight transducer measures the load of the drill string on the rig. A movement sensor provides information on movement of the hook. An internal clock provides time signals. The relevant parameters are calculated using a microprocessor from these three factors.

Abstract: Records of signals (FIG. 6) derived from probes (1, 2, 3) in a gas turbine engine are captured (FIG. 8) so as to provide digital signal records indicative of waveshapes (FIGS. 57-80) which can be correlated to identify the causal engine event, including history samples which occur before a record-starting threshold crossing (FIGS. 6 and 8).

Abstract: Electronic hourmeter devices having service reminders are useful, for example, in industrial vehicles. Advantageously, such service reminders should be field programmable for a variety of predetermined service intervals. The subject electronic service reminder is readily field programmable by authorized personnel and is protected from being programmed or reset by unauthorized personnel. A service status indicator is activated in response to the elapsed hourmeter time exceeding the programmed service interval time, and both the hourmeter elapsed time and the service reminder programmed time are resettable in response to a predetermined magnetic flux applied to respective Hall effect switches. Data is advantageously maintained in a non-volatile memory device without need for a battery back-up.

Abstract: A system which provides an increased minimum aircraft pitch attitude during take-off or go-around operations in the event that an unsafe wind shear condition is encountered. A control signal from a wind shear warning system, indicative of a dangerous wind shear condition, is fed to a switching device which controls the velocity command signal to the flight director pitch control. This switching device, in response to the wind shear signal, changes the velocity command to a lower predetermined value, such that the attitude of the aircraft is automatically increased to handle the wind shear encounter.

Abstract: Apparatus is disclosed for accumulating (counting) the occurrences of different types of events (such as trips travelled by an automobile) and storing these counts in substantially permanent form. The apparatus includes a logic element for determining both the occurrence of an event (trip travelled) and the type of event (length of trip), and a non-volatile memory such as a "fusable-link" PROM or UV-erasable PROM, associated with and connected to the logic element, for accumulating and substantially permanently storing the statistical information.

Abstract: The disclosure is directed to a wristwatch dosimeter utilizing a CdTe detector, a microprocessor and an audio and/or visual alarm. The dosimeter is entirely housable with a conventional digital watch case having an additional aperture enabling the detector to receive radiation.

Abstract: A method which determines at least one property of a material by measuring the ultrasonic absorption in this material. In carrying out this method, the material is subjected to an ultrasonic wave having an intensity varying in time. Such a method can be performed by measuring a temperature modulation, produced by absorption of the ultrasonic wave in a probed region of the material, at a surface area corresponding to this probed region, by measuring the ultrasonic power over the probed region, and by calculating the ultrasonic absorption in this probed region from the measured surface temperature modulation and the measured ultrasonic power for the purpose of determining at least one property of the material. Of course, the calculated ultrasonic absorption is representative of this material property.

Abstract: The quality factors (Q) indicative of the likelihood of the waveshape (FIGS. 57-80) of signals produced by electrostatic probes (1, 2, 3, FIG. 1) disposed in the gas stream of a gas turbine engine are combined for certain categories of sets of the probes which will simultaneously sense the same engine event (FIGS. 9, 12a, 12b). The likelihood of signals correlating to particular engine event as a function of positive and negative threshold crossings (FIG. 83) is correlated as between pairs of probes, both digitally (FIGS. 85 and 86) and by analog hardware (FIGS. 87 and 88).

Abstract: A plurality of computer programs (FIGS. 25-56) utilize variable discriminators (Tables 2-9) to classify signals derived from electrostatic probes (1, 2, 3) disposed in the gas stream of a gas turbine engine in accordance with characteristics of the wave shapes (FIGS. 57-80) thereof into categories correlated with causal engine events. The discriminators allow use of programs for more than one category, and even for more than one of the probes, and allow varying the discrimination as necessary to tailor the system to different engines and to accommodate newly-discovered signals.

Abstract: A computerized parking system which includes a first camera for reading the license plate of a vehicle entering a parking area, and a second camera for reading the license plate of the vehicle as it leaves the parking area. In each instance, the letters and numbers on the license plate of each vehicle are converted into digital signals. The system responds to the digital signals from the cameras to determine the time of entry and time of exit of the vehicle, and the time vehicle remained in the parking area is then determined. The parking fee due for each vehicle is computed on the basis of a predetermined rate or rates and on the time in which the particular vehicle remained in the parking area. The system then produces a ticket, or a visual display, at a cashier's station at the exit on which the amount to be paid is recorded, and when that amount is paid the cashier opens the gate.