TABLE OF CONTENTS
Section
Page Number
I. Introduction
7
Purpose of Manual
7
Principles of Altitude Control
7
II. General Mills 20-Foot Balloons
7
Description
7
Load Limits
8
Appendices
8
III. Equipment Train
14
Lines and Rigging
14
Altitude Control Equipment
16
Flight Termination Gear
20
Accessory Flight Equipment
27
Tracking and Recording Instruments
27
Flight Tools and Equipment
29
IV. Pre-Flight Computations
29
Lifting Gas and Rate of Rise
29
Length of Balloon Bubble
33
Expected Altitude
33
Ballast Requirements
36
Altitude Sensitivity
36
Forms and Records
36
V. Balloon Inflation
36
Preparation of Balloon
36
Use of Shot Bags and Releasing Device
39
Inflation Techniques
39
VI. Balloon Launching
47
VII. Tracking and Altitude Determination
51
Positioning Equipment
52
SCR-658
52
Theodolite
52
Aircraft Radio Compass
53
Radar
53
Altitude Determination
53
Olland Cycle Pressure Measuring Instrument
54
Codesonde
64
Barograph
64
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