a coat of varnish is put on the inside; this is done torender it absolutely impervious, the air tending to drive thevarnish through the fabric to the outside and fill up the pores. After the last coat of varnish is put on, all seams are pencilled,or, in other words, varnished again with a small… … ;IluV\l.\i, iu.-iIHu.X ul .-.\.\U-l;.-\GS AND NET AFTER E.ALLOON ISINFLATED At the very top of the balloon is a large valve, which is oneof the most important components of a balloon (see figure 3), for,used in conjunction with the ballast, it is the pilots only meansof control. The intention being…
Aeronautics
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