Pitot-static Tube: A Device to Measure Air Flow Speed

1. Recording manometer pressure readings with changes in airspeed.

1. Connect the two leads of the Pitot-static tube to the two ports of the manometer. The manometer should be filled with colored oil and marked as water inch graduations.
2. Insert the Pitot-static tube into the threaded fitting so that the sensing head is in the center of the test section of the wind tunnel and the tube is pointing upstream. The test section should be 1 ft x 1 ft, and the wind tunnel should be able to sustain an airspeed of 140 mph.
3. Use an inclinometer to adjust the Pitot-static tube to a zero-degree angle of attack.
4. Run the wind tunnel at 50 mph and then record the pressure difference reading at the manometer.
5. Increase the airspeed in the wind tunnel by 10 mph and record the pressure difference at the manometer.
6. Repeat 1.5 until the airspeed reaches 130 mph. Record all results.

2. Investigate the accuracy of Pitot-static tubes with a positive angle of attack.

1. Use the inclinometer to adjust the angle of attack to positive 4°.
2. Run the wind tunnel at 100 mph, and record the pressure difference reading on the manometer.
3. Increase the angle of attack by 4° increments, and repeat steps 2.1 - 2.2 up to an angle of attack of 28°. Record all results.