Controls, first use of (cont'd.)
- fixed needle-valve ballast leak, 11
- fixed orifice ballast leak, 43
- minimum-pressure switch with automatic ballast valve, 12
- rate-of-ascent ballast switch, 97
- rate-of-ascent ballast switch combined with displacement switch, 102
- superpressure, 23
- lifter balloons, 5, 7
- solid ballast, 5, 7
- superpressure, 23, 38, 59, 63, 66, 79, 87, 94
- typical flight with automatic ballast valve, 92
- fixed ballast leak, 82
- rate-of-ascent ballast switch combined with displacement switch, 102
Deformation of air flow over mountain range, 11
Destruction device
- first use of, 10
- first use of new design (rip-out principle), 41, (Fig. 16)
Dewey and Almy, shrouded rubber balloons, 23, 38, 66, 87
Dropsonde, 85
Easterly winds at high levels, 60, 75
Fixed-leak ballast control
- first use of, 11
- typical flight with, 82
Flight patterns, typical
- with polyethylene balloons and automatic ballast-valve control, 92
- with polyethylene balloons and automatic ballast-valve control thru a sunset, 90, 92
- with polyethylene balloons and fixed flow of ballast, 82
Flight patterns, typical (cont'd.)
- with rubber balloons and increment ballast loss, 5, 7
Geostrophic air flow, compared with balloon trajectories, 55, 58, 106, 110
Lange barograph
- first use of, 52
- longest record of, 75
Lifter balloons for altitude control, 5, 7
Meteorograph, Fergusson, 33, 35, 39
Minimum-pressure switch
- failures due to freezing of, 78, 80
- first use of, 12
- need for, demonstrated, 11
Olland-cycle pressure modulator, use of, 43, 52, 55, 58, 73, 97, 98
Oscillations in the atmosphere, 10, 52, 55, 58, 63, 71
Polyethylene balloons
- 7'-diameter, 74, 76, 84, 86
- 30'-diameter, 102
- 15'-diameter, 10
- 20'-diameter, 12, 17
- 70'-diameter, 75
Pressure-measuring instruments
- barograph, 33
- Lange barograph, 52
- Olland-cycle modulator, 43, 52, 55, 58, 73, 97, 98
Program switch, use of, 103
Radar tracking, 75, 86
Radio direction-finding airborne, 41, 103, 110
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