http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_airplanes/cub_airplanes_lesson02.xmllessontext/xmlIntegrated Teaching and Learning Program, airplanesliftpressureforceBernoullithrustdragweightLiftAngle of AttackCamber

Students revisit Bernoulli’s Principle (Lesson 1 of the Airplanes unit) and learn how engineers use this principle to design airplane wings. Airplane wings create lift by changing the pressure of the air around it. This is the first of four lessons exploring the four key forces in flight: lift, weight, thrust and drag.

With their understanding of Bernoulli’s principle, engineers manipulate air pressure to create lift. They design a wing so that the air moves faster over the top of the wing than under the wing. Since we know from Bernoulli’s principle that faster moving air has less pressure, the air pushes more on the bottom of the wing than on the top of the wing. This difference in pressure causes the wing to rise; engineers call this lift. Before testing on a real airplane, engineers experiment with variations in wing shapes in wind tunnels to see how they perform in moving air. Understand the four key forces acting on an airplane during flight. Explain Bernoulli’s Principle.Use Bernoulli’s Principle to explain what lift means with respect to airplanes. 50TeachEngineering.orgTom RutkowskiAlex ConnerGeoffrey HillMalinda Schaefer ZarskeJanet Yowellhttp://www.grc.nasa.gov/WWW/K-12/FoilSim/index.htmlhttp://www.swe.org/iac/LP/wind_01.htmlS11416C8International_Technology_Education_Association-ITEA_STL_StandardsTechnologyStandard 18. Students will develop an understanding of and be able to select and use transportation technologies. 012S11424E4ColoradoScienceb. Use the particle model of matter to illustrate characteristics of different substances 66S11424ECColoradoSciencea. Explain that the mass of an object does not change, but its weight changes based on the gravitational forces acting upon it 66United StatesCopyright 2012 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulderhttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2012-01-196Teacher