Abstract: A chaff cartridge is made up of a plurality of chaff interpackets contained in subprojectiles. The subprojectiles are each provided with fins and the fins of each subprojectile in a chaff cartridge provide a different drag to cause the spacing out of the subprojectiles. The fins, additionally, cause the subprojectiles to rotate and thereby radially disperse the chaff.

Abstract: A process for interpreting remotely sensed data to determine the nature and presence of several conditions. Data sensed at two different wave bands are mathematically divided to determine the ratio of the energies coming from the observed object at the two wave bands. Unlike density addition or subtraction which furnish only the difference in the densities on the film, the step of mathematical division produces a change in pattern as well as density. The changes in the pattern can be interpreted to provide additional information from the data.

Abstract: Following an emergency ejection from an aircraft, a radar altimeteris used to sense when a pilot or crewman, descending by parachute, is within 100 to 500 feet of the underlying terrain. When the predetermined altitude range is reached, the radar altimeter actuates a release mechanism and deploys a survival kit which remains connected to the parachutist via a strap or lanyard. The device can also be modified to measure and indicate the altitude above the terrain to function as a normal radar altimeter.

Abstract: Laser radiation is employed to initiate and promote chemical reactions by creating states of molecular vibrational mode excitation exceeding those appropriate to the translational temperature of the medium in one or more of the reactants. In favorable cases, vibrational excitation in a certain vibrational normal mode of a reactant will act to accelerate the rate of a desired chemical reaction. The reactants can be pressurized so that their vibration-rotation spectrum can be broadened to the point that laser radiation can be absorbed without the need for exact coincidence between a line or lines of the spectrum of the reactant and that of available lasers. Provision can be made for isolation and analysis of products, recycling of unused reactants, temperature control of reactants and real-time monitoring of the state of vibrational excitation of the reactants.

Abstract: A laser having a radial flow configuration which may be utilized to achieve lasing in both chemically and electrically excited gas lasers.

Abstract: The radio frequency source for a low power, lightweight radar is provided by operating a transistor in the avalanche mode. An open delay line is in the collector circuit and a shorted delay line in shunt with the output line is part of the emitter load. The resulting device can be employed as a low power, nanosecond, monocycle pulse generator with low range, or time domain, sidelobes.

Abstract: Bundles of chaff fibers are fed into a rotating preacceleration chamber having a diverging outlet. The chaff fibers are rotated with the preacceleration chamber and are forced radially outward by centrifugal force. A feed mechanism forces the rotating chaff fibers toward the diverging outlet from which they are propelled outwardly at a high velocity and at an angle almost orthogonal to the rotational axis of the chaff dispenser.

Abstract: The present invention discloses an analysis procedure which permits the calibration of airborne thermal infrared systems to absolute ground temperature and the removal of variations due to slant angle without the need for ground measurements. Absolute ground temperature are extrapolated from data taken at a plurality of altitudes over a selected reference point.