Abstract: A device is provided for cooling a conductor to the superconducting state. The conductor is positioned within an inner conduit through which is flowing a supercooled liquid coolant in physical contact with the conductor. The inner conduit is positioned within an outer conduit so that an annular open space is formed therebetween. Through the annular space is flowing coolant in the boiling liquid state. Heat generated by the conductor is transferred by convection within the supercooled liquid coolant to the inner wall of the inner conduit and then is removed by the boiling liquid coolant, making the heat removal from the conductor relatively independent of conductor length.

Abstract: A device for the continuous computation of fluid velocity, the simultaneous analysis of direction of fluid motion, and the storage of both is described. Utilizing multiple sensors, the device computes average fluid velocity and direction over a selected fluid travel distance, stores the velocity data in one of several selected speed classes and stores the direction identified to the fluid sample in one of several selected direction classes. At the operator's option, the data may be stored either as velocity with the direction existent at the end of the travel period or as velocity as a function of each of the several directions selected. Low power consumption and data storage ability make this instrument suitable for use in remote, unmanned applications.