Learning (How) to Fly 9th Grade Aeronautics Module Overview Topic: Investigating the concepts behind flight Grade Level: 9 Course: Engineering Technology 1 Time Allotted for Module: 6 weeks Prior Knowledge: Familiarity with middle school force and motion concepts such as: friction, mass, potential and kinetic energy, force, acceleration, Newton’s laws, simple machines, measurement skills and conservation of energy is needed. Basic math, algebra, and reading skills are necessary for all submodules. Overview In this unit students will use NASA-created materials, along with other public domain on-line resources, to study the topic of aeronautics. First, students will diagram and identify the structure and function of the various parts of an airplane, gaining an overview of the features involved in airplane motion. Next, students will explore Bernoulli’s principle and Newton’s laws to understand the basic principles of flight, going on to explore how the interplay of forces creates the motion of flight by examining the “tug of war“ between the opposing forces of lift versus weight and thrust versus drag during horizontal flight. Students will create free-body diagrams of the forces acting on an airplane, and compare and contrast the three most common misconceptions regarding lift. Students will show what they have learned by sharing a poster presentation at the end of the module. Vocabulary Aeronautics: The science of flight Aileron: Surfaces designed to change roll Drag: Drag is a force created by the friction of air against the skin of an airplane as it moves forward. Drag affects more than just airplanes—you can feel it pushing back on your hand if you hold it out the window of a moving car. In an airplane, drag increases as speed through the air increases. Faster airplanes will have ways of pulling up their landing gear, among other things, to reduce drag and increase speed. Elevator: A surface designed to change pitch (up and down) Flaps: Surfaces designed to change pitch and drag Fuselage: The body of an airplane that holds things together and carries payload Horizontal Stabilizer: Surfaces designed to control pitch Jet Engine: A device that generates thrust 9th Grade Aeronautics Module Overview Page 1 Lift: Lift is the upward force created by the wing of an airplane. It is important because, without it, airplanes would simply be very expensive cars—they would be able to roll around on the ground but would never rise into the air. A wing generates lift, in part by deflecting air downwards and in part due to the way air flows over its special shape. Pitch: The up and down motion of the nose of the aircraft, controlled by elevators Roll: The up and down movement of the wings, controlled by ailerons Rudder: A surface designed to change yaw (side to side motion) Slats: Surfaces designed to change lift Spoiler: A surface that helps to change lift, drag and roll Thrust: Thrust is a forward push or pull that accelerates an airplane and keeps it in flight at a constant speed despite the slowing force of drag. Thrust comes from an airplane’s engine, be it a small airplane with a propeller or a large airplane with a giant jet engine. Thrust is an important force, as an airplane cannot fly without forward motion through the air. Vertical Stabilizer: A surface designed to control yaw Weight: Weight is the force of gravity acting on the mass of the airplane. It is what pulls an airplane down towards the ground. Weight is helpful in making sure that an airplane does not float around once it is parked; however, when an airplane flies it must overcome its weight to take to the air. Yaw: The side to side movement of the nose of the aircraft, often controlled by the rudder Wing: A surface shaped to generate lift Materials Students should have their science notebooks for every day. DAY 1-5 Computer with Internet access Colored pencils or markers DAY 6-13 Computer access to Physics Classroom website DAY 14-15 Air blower Two rolls of toilet paper on a dowel Soda straws (one straw cut in half for each student, plus a few extra) Small paper or plastic cups (a few more than one for each student) A regular (2.5 gallon) pail 2/3 filled with water A sponge and roll of paper towels Vegetable dye Paper – 8.5 x 11 in. – enough for each student to have a sheet. Should not have folds or wrinkles, but may be “used” otherwise A dime A transparent jar or beaker (at least 500 ml) A smooth, flat tabletop A wood or plastic spool for sewing thread (it is okay if it still has thread on it) A paper clip A piece of paper or light cardboard about 2 ´ 2” A piece of brightly colored heavy yarn 12 -18 inches long An electric leaf blower ( One with a variable speed is a plus) Its blower tube should have a diameter of 2-3 inches, and a length of about 2 feet. A hollow rubber ball with a diameter of 2-3 inches 9th Grade Aeronautics Module Overview Page 2 A piece of brightly colored heavy yarn (see experiment 4) DAY 16-17 18” string 1 Pushpin 20g or 30g spring/pen scale 1 Pre-made electric propeller car (motor shaft diameter 1/16”) Batteries (as required) 3 - 4 Safety goggles (1 pair per child) Clear protractor 1 Plastic propeller (balsa glider variety) 2 Eye screws (1/4”) 1 Dowel segment (5/8” x 3/16” with 1/16” hole) Hot glue gun Tape Colored pencils or markers DAY 18-20 The following makes one wind tunnel – you may wish to make several one for each group. clear adhesive tape Transparency film Glue Meter stick Box window fan Cardboard Strong scissors String Duct tape 2 Chairs Safety goggles Colored pencils or markers Elastic cord (from party hat) (Optional) window screen A selection of different wing shapes purchased from a hobby shop DAY 21-25 Computer access Colored pencils or markers DAY 25-30 Computer or library access for research Colored pencils or markers Poster board Science Standards Nature of Science, Standard 1: Practice of Science SC.912.N.1.1 Define a problem based on a specific body of knowledge, for example: biology, chemistry, physics, and earth/space science, and do the following: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. pose questions about the natural world, conduct systematic observations, examine books and other sources of information to see what is already known, review what is known in light of empirical evidence, plan investigations, use tools to gather, analyze, and interpret data (this includes the use of measurement in metric and other systems, and also the generation and interpretation of graphical representations of data, including data tables and graphs), pose answers, explanations, or descriptions of events, generate explanations that explicate or describe natural phenomena (inferences), use appropriate evidence and reasoning to justify these explanations to others, communicate results of scientific investigations, and evaluate the merits of the explanations produced by others Physical Science, Standard 12: Motion SC.912.P.12.2 Analyze the motion of an object in terms of its position, velocity, and acceleration (with respect to a frame of reference) as functions of time. 9th Grade Aeronautics Module Overview Page 3 SC.912.P.12.3 Interpret and apply Newton's three laws of motion. SC.912.P.12.4 Describe how the gravitational force between two objects depends on their masses and the distance between them. Math Standards Algebra, Standard 1: Real and Complex Number Systems MA.912.A.1.3 Simplify real number expressions using the laws of exponents MA.912.A.1.5 Use dimensional (unit) analysis to perform conversions between units of measure, including rates Algebra, Standard 2: Relations and Functions MA.912.A.2.7 Perform operations (addition, subtraction, division, and multiplication) of functions algebraically, numerically, and graphically. Algebra, Standard 5: Rational Expressions and Equations MA.912.A.5.4 Solve algebraic proportions. Geometry, Standard 7: Polyhedra and Other Solids MA.912.G.7.7 Determine how changes in dimensions affect the surface area and volume of common geometric solids. MA.912.G.8.2 Use a variety of problem-solving strategies, such as drawing a diagram, making a chart, guess-and-check, solving a simpler problem, writing an equation, and working backwards. MA.912.G.8.3 Determine whether a solution is reasonable in the context of the original situation. References Airplane Parts Definitions http://www.grc.nasa.gov/WWW/K-12/airplane/airplane.html AirplaneWings.pdf http://www.dauntlesssoft.com/PRODUCTS/Freebies/Library/books/FLT/Chapter17/WingPlanform.htm[1/20/2010 Compare_contrast_GO.pdf (may be reproduced for classroom use only) http://www.educationoasis.com Conceptual_bermoulli.pdf http://mypages.iit.edu/~zwicker/lesson5.htm Flight Videos http://wright.nasa.gov/webcast.htm GO_4item CC.pdf (may be reproduced for classroom use only) http://www.educationoasis.com InThrustWeTrust.pdf http://www.hiller.org/files/docs/InThrustWeTrust_v2.pdf 9th Grade Aeronautics Module Overview Page 4 MeasureOfAllThings.pdf http://www.nasa.gov/audience/foreducators/topnav/schedule/about/DONOTUSE_Tools_of_the_Aero nautics_Trade_5-8.html NASAwindtunnel.pdf http://www.smokemachines.com/nasawtfs.htm Newton123.pdf teacher-created Newton’s Laws Physics Classroom http://www.physicsclassroom.com/Class/newtlaws/ Copyright and Usage Policy: The pages of The Physics Classroom tutorial (and other pages at this site) are made available as a service to physics students, physics teachers, and others. Their use is encouraged and is free of charge. Teachers who wish to use the pages either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. The Physics Classroom is copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Presentation Rubric.pdf teacher-created ProjectSpecs.pdf teacher-created Structure of an Airplane http://www.allstar.fiu.edu/aero/flight10.htm Theories of Lift http://www.grc.nasa.gov/WWW/K-12/airplane/lift1.html Toilet Paper the Tree video http://www.physics.umn.edu/outreach/pforce/circus/ videoquestions.pdf teacher-created Wingshape.pdf http://www.dauntlesssoft.com/PRODUCTS/Freebies/Library/books/FLT/Chapter17/WingPlanform.htm WorksheetFreeBodyDiagrams.pdf teacher-created 9th Grade Aeronautics Module Overview Page 5