Abstract: A detonation engine which creates thrust by generating a detonation wave, wherein the overall engine structure is simplified, and continuous output can be obtained, comprises: a rotational flow generation device which generates rotational flow about an axis in a mixed gas of air and fuel or of oxygen and fuel; a detonation chamber arranged downstream from the rotational flow generation device, formed in a ring-shape radially extended and continuous in the circumferential direction, which continuously combusts in the circumferential direction the mixed gas in which the rotational flow is generated to generate detonation waves, and draws it in from the radial inside and exhausts it to the radial outside; and a nozzle which is connected to the detonation chamber, and jets the high temperature and pressure combustion gas generated by the detonation waves flowing from the detonation chamber, to the rear while expanding it, and converts it into thrust.

Abstract: A detonation engine which creates thrust by generating a detonation wave, wherein the overall engine structure is simplified, and continuous output can be obtained, comprises: a rotational flow generation device which generates rotational flow about an axis in a mixed gas of air and fuel or of oxygen and fuel; a detonation chamber arranged downstream from the rotational flow generation device, formed in a ring-shape radially extended and continuous in the circumferential direction, which continuously combusts in the circumferential direction the mixed gas in which the rotational flow is generated to generate detonation waves, and draws it in from the radial inside and exhausts it to the radial outside; and a nozzle which is connected to the detonation chamber, and jets the high temperature and pressure combustion gas generated by the detonation waves flowing from the detonation chamber, to the rear while expanding it, and converts it into thrust.

Abstract: An automotive driving instruction system which comprises a plurality of sensors including a vehicle speed sensor etc. mounted at various parts of the automobile, a computer for reading the outputs of the sensors for calculating the driving conditions of the automobile, and a replaceable external memory unit. The computer calculates a plurality of values representing the driving conditions of the automobile on the basis of the outputs of the sensors, and controls to generate an alarm when any of the values thus calculated becomes to corresponding one of a plurality of predetermined values. Also, the accumulated value of the alarms and the respective accumulated values of the alarms for each of causes of alarming are stored in the external memory unit. At the end of a driving, the external memory unit is demounted, so that any habits of the driver is determined from the data stored in the external memory unit to contribute to the correction thereof.

Abstract: A small portable memory device has optical connectors except for those connecting with an external power source. The memory device incorporates a semiconductor memory and information such as address and data information are applied externally by means of light beams. The light signals applied to the device are converted into electrical signals by phototransistors and the address and data information applied externally, one bit at a time, are temporarily stored in a shift register incorporated in the device. When the received input attains a predetermined number of bits, the semiconductor memory is accessed to effect the writing or reading of data. When reading the data, electrical signals indicative of the data to be read are converted into light signals by a light-emitting diode and are delivered from the device in the form of light signal.

Abstract: In an automobile air-conditioning control apparatus, in accordance with a setting temperature signal and an actual temperature signal, a microcomputer controls the rotational speed of blower motors and shifts the direction of flow changing plates, so that the control between a concentrated blowing condition and an overall blowing condition may be effected successively and gradually.

Abstract: An apparatus responsive to the amount of refrigerant flow in a refrigerant circulating system includes a sensing capacitor mounted in a refrigerant passage, the capacitance of the sensing capacitor being varied depending on a change in the dielectric constant of the refrigerant which in turn being dependent on the amount of the refrigerant. The sensing capacitor forms an element of a resistance-capacitance oscillatory circuit and it also forms a ring oscillator together with another capacitor and a plurality of inverters and resistors. The oscillation frequency of the ring oscillator is detected to determine the amount of the refrigerant flowing through the refrigerant passage.