Development of Teaching Materials- The Pitot-Static Tube with Flange Shape Fence Using Empty Can, Straw and Paper-Board

Many Pitot-static Tubes were tried to make of Empty Cans, Straws and Paper-Board, those of which are materials that can be easily obtained. The Steel Empty Can is 53mm in diameter and 96mm in length. The Straw is 6mm in diameter and 207mm in length. The Paper-Board is 0.5mm in thickness. The Empty Cans were used to detect static-pressure, and the flexible Straws were used to read both total and static pressure, and the Paper-Board were used by the Flange Shape Fence. The result of the investigation on the characteristics of the hand made Pitot-Static tubes can be summarized as follow : 1) Handmade Pitot-Static tubes using Empty cans, Straws and Paper-Boards have coefficients ranging from 0.75 to 0.86,and can be used to measure low wind velocity, which cannot be measured using a standard Pitot-Static tube. 2) Pitot tube coefficients decrease when Fence diameters are between 1.6 to 1.8 times of the Can diameter.