A cryocooler is proposed for space-borne infrared astronomical telescopes which require 50 mw or less cooling at 1 to 2 k. it consists of a linear drive three stage split-stirling cryocooler which will produce refrigeration at 8 k to cool a nbsn ac superconducting magnet and a ggg magnetic cold… More

A miniature two stage joule-thomson (j-t) cryostat in a dewar with 0.5 in. dia x 0.5 in. length is proposed which can cool to less than 80 k in an ambient of 75 deg c. high efficiency in the very small heat exchanger is made possible by new technology. the program will include a demonstration of run… More

The use of cryogenic solid hydrogen as a rocket propellant may lead to major advances in rocket propulsion. To use solid hydrogen as a propellant requires a system designed to solidfy, store, and transport hydrogen. We propose to study different methods for creating H2 for more than one hour at… More