A Two-Phase Cooling System for the Jetfoil Visual Augmentation System

A novel cooling system, utilizing two-phase thermosyphon principles, has been developed for temperature control of the Boeing Jetfoil's night vision system. Analyses and tests conducted on this unit have shown that it can replace a current single-phase, forced liquid loop with minimal thermal penalty. In addition, the two-phase system is considerably lighter, and much quieter than the existing system.