Abstract: A track-laying, remotely controlled, miniature target vehicle is shown, bearing an expendable shell which resembles a military tank. Four grooved pulleys on each side carry two V-belts as tracks, one wheel being electric motor-driven. The two reversible electric motors, one for each side, run and are controlled independently of each other by means of speed control units receiving signals from an on-board radio receiver. A transmitter remote from the simulated battlefield is under the control of a tank commander who puts the tank through realistic maneuvers. More remote visual control is provided by an auxiliary control device electrically connected to the transmitter and which is cooperable with an optical instrument, being attached for example to the two telescopes of optical binoculars by quick-releasable straps.

Abstract: It is often desirable to measure absolute and relative USW velocities in a specimen. One example is a specimen which is to be tested for residual surface stresses. The specimen is provided with two scratches which are parallel and a known distance apart. An ultrasonic surface wave (USW) transducer is attached to the surface of the specimen in such a way as to efficiently transfer USW energy to the specimen. During testing, the incident pulse from the transducer is partially reflected at each scratch. The same transducer generates and detects both reflections. The transducer output goes through a clipping circuit which clips the large incident voltage spikes in the output and passes the smaller, echo voltages through to an oscilloscope. The oscilloscope horizontal sweep is driven at a frequency which is the reciprocal of the difference in arrival times between the two reflected pulses.

Abstract: A heat engine power system includes a fluid fuel heat engine designed to determined performance characteristics for military vehicles, and a cooling subsystem which has enough capacity to carry away the rejected engine heat. When the exigencies of parts support require replacement of the original engine by a more powerful one which at high ambient temperatures and wide-open throttle would overload the cooling subsystem, the speed controls are such that either of two heat sensors closes an electric circuit to a solenoid which is energized to move the throttle to a given position to restrict fuel flow to an amount which limits engine output so that the rejected heat is within the capacity of the cooling subsystem, thus avoiding overheating and failure, and keeping the military equipment in service without permanently sacrificing total available horsepower.