August 1, 1920 AVIATION August I, 1920 AVIATION to light causes the insulation resistance of ebonite (highly- s of tilt- vopor-pressure of sulphur at … when exposed at Berbera. Manila 12.5 per cent. Exposure tests in the tropics of the following fabrics and Khartoum 17.8 per cent. samples are also suggested for balloon fabrics:— Munich .1.4 per cent. UP in the air 17,150 feet with pilot and three pass- The observation: (a) A chromate colored…
Aviation Week
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