Techniques in Smoke Application.
Final rept. 20 Jun 66-31 Dec 67,
DOW CHEMICAL CO MIDLAND MI
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Exploratory studies have been conducted on techniques in smoke application. A chamber has been constructed for evaluating screening smokes by both a visual target technique and a light attenuation technique. Using TiCl4 FM smoke agent, nearly exact agreement in total obscuring power TOP values between the two techniques has been obtained. Relative humidity was found to have a pronounced effect on the obscuring power of nearly all the smoke agents investigated. Chemical smokes consisting of boron oxide, boron nitride, silicon dioxide, and pyrotechnic oil fogs were studied. Boron oxide smoke generated from boron - lithium perchlorate mixtures is superior in TOP to the FM standard. A satisfactory boron nitride smoke could be generated from the mixtures investigated. The best silicon dioxide smoke was generated from a silicon - lithium perchlorate composition. This smoke, which contains substantial amounts of lithium chloride, is high in TOP. Pyrotechnic oil fogs are superior in TOP to FM below 50 relative humidity, but inferior under more humid conditions. They are promising because of low cost and simplified processing. Author
- Ammunition and Explosives