This effort will perform the detailed engineering analysis of a liquid-nitrogen, flight cooler for use in a NASA-Get Away Special (GAS) experiment program. The liquid containment technology is based on a NASA-GSFC technical note, and this effort would be to perform detailed engineering analysis of a system for use as a "standard" that GAS can package for future experiments. Liquid nitrogen was chosen as the baseline fluid to produce a 80 K nominal operating temperature, although liquid neon may also be suitable, and will allow testing at approximately 25 K.This project will permit inexpensive, low-temperature testing and remote sensing in space.liquid cryogen cooler, flight cryogenic systemSTATUS: Phase I Only