With light weight payloads, balloon systems of this type can be launched by two or three experienced balloon men. The launching is carried out in a manner similar to that explained in Section II, Operations, of "Technical Report 93.02(1)" in that the balloon is inflated in the lee side of a building or wind screen, (or in an aircraft hangar if one is available, or in the open when winds are light) with the equipment train laid out downwind of the balloon. The amount of gas lift is equal to balloon weight plus approximately 10% to cause ascent at 800 to 1000ft. min. A picture of inflation of a 20 ft. diameter plastic balloon is shown as Fig. 11.
Fig. 11