The Physics Of A Wind Tunnel - 1397 Words

A wind tunnel is a key instrument used by Aerospace engineers to accurately measure the aerodynamic forces and moment on an aircraft model. The aerodynamic forces and moments that the model experience then can be compared to the real-life conditions that an aircraft experiences in real-time. An important in tool that allows us to find these different force is the L.A. Comp wind tunnel’s pyramidal balance. This kind of balance allows aerospace engineers to measure all the force: lift, drag, and side force; as well as all the moments: pitching, yawing, and rolling [1]. Figure 1, you are able to see where each of these forces are action and along which axis. Figure 1: Forces and Moments on an Aircraft It is important to understand where all these forces and moments are acting on an aircraft to understand how each one affects and aircraft. A crucial step before actually gathering these force and moments is to calibrate our balance. The objective of this experiment was to calibrate the L.A. Comp wind tunnel and to develop calibration plots that will later be used in future experiments. The L. A. Comp wind tunnel is a closed circuit wind tunnel that has been at the University of Oklahoma. It is a subsonic wind tunnel powered by a 400hp electric motor that spins three-seven-foot propeller at a constant speed. The speed of the air in this wind tunnel is adjusted by the pitch of the propellers adjusted by a hydraulics. The L.A. Comp wind tunnels usually operates at 150mph. The testShow MoreRelatedThe Physics of Roller Coasters1466 Words   |  6 Pageson that thought, the adrenaline pumps through your blood. Suddenly your body is flung forward as you plummet down the first drop. Then you are being forced down on the cart’s seat as you arch the bottom of the transition to going up the second hill. Wind whips in your face. 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