High-Altitude Nighttime Balloons
An experimental high-altitude balloon suitable for nighttime use was recently developed and tested in both tropic and temperate latitudes. Results of tests indicate the balloon is capable of attaining a bursting altitude in excess of 100,000 ft with slightly more hydrogen than that required by existing night balloons now used to attain an altitude of 80,000 ft. Some reduction in the size of the balloon will be required to make it suitable for inflation in existing shelters.