115 空き缶とストローを利用したピトー静圧管教材の開発

概要

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Many Pitot-static Tubes were tried to make of Empty Cans and Straws. The Aluminium Empty Can is 66mm in diameter and 118mm in length, and one size of Steel Empty Can is 55mm in diameter and 96mm in length, the other size is 66mm in diameter and 96mm in length. The Straw is 6mm in diameter and 210mm in length. Specific characteristics of these Pitot-static Tubes were investigated by changing of static pressure hole's diameter and distance from Tube's tip. In the result, these characteristics were same. Furthermore, coefficients of these Pitot-static Tubes were obtained by the experiments on the test Pitot-static Tubes with wood stay and brass pipe stay. When length of Empty Can are 96mm and stay is brass pipe, a coefficient of Pitot Tube is 0.99,and when length of Empty Can are 96mm and stay is wood, it is 0.83. These test Pitot-static Tubes with both wood stay and brass pipe stay were known to use the same of standard Pitot-static Tube in either case. As a result of these experiments, it is known that Pitot-static Tubes with wood stay are better than those with brass pipe stay for teaching materials of pupils.
2002-10-05