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Dimensional Analysis and Model Testing of Airfoils: Understanding Lift and Drag Dynamics

This study delves into the principles of dimensional analysis and model testing in aerospace engineering, focusing on the lift and drag characteristics of airfoils. It examines how scaled models can effectively estimate the performance of life-size prototypes, addressing the economic viability of preliminary testing. By utilizing methodologies from renowned sources like NASA and Boeing, the objective is to test airfoils at various angles of attack and determine their lift coefficient (Cl) and drag coefficient (Cd). This research aims to bridge the gap between theoretical design and practical application.

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Dimensional Analysis and Model Testing of Airfoils: Understanding Lift and Drag Dynamics

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  1. 2145-392 Aerospace Engineering Laboratory II Dimensional Analysis and Model Testing: Lift and Drag, and Cl and Cd of An Airfoil Asi Bunyajitradulya (ABJ)

  2. Dimensional Analysis and Model Testing From http://www.windtunnels.arc.nasa.gov/pics/12FT/12t2 From http://www.boeing.com

  3. Background • How can we estimate the performance (e.g., lift and drag) of a life-size prototype with the testing of a scaled model? • What underlying principle allows us to test a scaled-model and use the resulting data to estimate the performance of a life-size prototype?  Dimensional analysis and model testing

  4. Motivation for Dimensional Analysis and Model Testing In the design and development of engineering equipment, • we need certain data, • it is not economical to build and test a life-size equipment right from the beginning, • Computer-Aided-Design/Engineering (CAD/CAE) helps in the initial design stage, but it still requires verification from the testing.

  5. Lift and Drag, and Cl and Cd of An Airfoil,Dimensional Analysis and Model Testing

  6. Objectives • Test for the lift and drag characteristics of an airfoil at various angle of attack. • Determine Cl and Cd of the airfoil.

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