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Forces of Flight Making Flight Possible

Forces of Flight Making Flight Possible. What FOUR Forces are acting on Aircraft? What is the role of Newton’s 2 nd Law of Motion (f=ma)? Aircraft and Equilibrium. Four Forces in Flight. Lift - verse - Weight. Lift is the Key to flight. If you can overcome weight you can FLY.

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Forces of Flight Making Flight Possible

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  1. Forces of FlightMaking Flight Possible What FOUR Forces are acting on Aircraft? What is the role of Newton’s 2nd Law of Motion (f=ma)? Aircraft and Equilibrium

  2. Four Forces in Flight

  3. Lift - verse - Weight • Lift is the Key to flight. If you can overcome weight you can FLY. • To do this, wings are made with a CURVED upper surface and a FLAT lower surface. • Air now flows faster over the Top and the Bottom • This creates a difference in pressure (Top-More & Bottom–Less) thus Lift is created (Net Force-UP)

  4. What is Weight ? The effect of the force of GRAVITY on an object pulling it towards the center of the Earth. Aircraft have a center point of this pull called the “Center of Gravity”. In flight, it rotates around this point. Aircraft’s weight can be great. It is the combination of all the mass (parts, fuel, payload) distributed throughout the airplane.

  5. Thrust – verse - Drag • To create LIFT force air has to flow over the wing. • To get air moving over the wing, one needs to create – THRUST • Thrust is the FORCE that is generated (airplane’s engine) • Thrust is aligned with the direction of flight and • opposite the direction of the airflow over the wing. • NO THRUST – NO FORCE - NO LIFT

  6. What is Drag? Air resists the movement of the aircraft. As the aircraft flies through the air, it causes air molecules to separate in front of it's path. This occurs along the wing and body Drag will slow the forward motion of the aircraft thus requiring more thrust.

  7. Newton & Flight (F=MA)This is what makes Airplanes Fly • This equation tells us that an aircraft subject to an external force will accelerate (velocity) and that acceleration (velocity) is related to the mass. • The heavier the aircraft the more the velocity to fly. The change is velocity generated the Force to fly … creates lift

  8. What’s Equilibrium & Flight? • Two types of Stability • Static: No Movement & Dynamic: Movement • Flight Equilibrium • Equilibrium Flight: Lift = Weight and Thrust = Drag • NET Force Equals ZERO • Aircraft continues to either sit on the ground or fly (Newton’s 1st Law) • Change in NET Force and you …..

  9. Put it all Together The Wright Brother’s got it WRIGHT (right) Mr. Heck Flying the Wright B Aircraft Video

  10. References • http://www1.nasa.gov/audience/foreducators/k-4/features/F_Four_Forces_of_Flight.html • http://www.bing.com/videos/search?q=NASA+Forces+of+Flight&FORM=VDRE&qpvt=NASA+Forces+of+Flight# • http://www.grc.nasa.gov/WWW/K-12/airplane/forces.html • http://www.ueet.nasa.gov/StudentSite/dynamicsofflight.html • http://www.grc.nasa.gov/WWW/K-12/airplane/short.html • http://quest.nasa.gov/aero/planetary/atmospheric/forces.html

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