Air and Space Traffic Needs of Upper Atmospheric Balloons

Large (typically 6 ft. in diameter at the surface) Instrumented (150 fttrain, 1.5 kg ( Fast (5 m/s rise rate (~1000 ft./min.)) Transmit data (403-405 MHz metAids) Typical ceiling of 30,000 m (~100,000 ft.) Total flight duration typically 2-2.5 hrs. Tracked to loss of signa