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“Gathering Information to solve problems”
                 (Video Part 1)
Four Principles/Forces of Flight
•   Thrust
•   Lift
•   Drag
•   Weight
    – (gravity)
             Center of Gravity
• The center of
  gravity is very
  important in any
• If the center of
  gravity is off, the
  plane will have
  trouble flying
                Flight Paths

    Caused by too much
    lift, or heavy tail

   Caused by too much
drag, gravity, or a heavy nose

   Proper flight path
    Three Directions of Control

• Yaw – Rudder
   (nose rotation -
    side to side)
• Pitch – Elevator
   ( nose up/down )
• Roll – Ailerons
   ( wings bank up or
     down )
Parts of a Plane
 Every part of a plane has a
 proper name and function.
• Body of plane

• Contains cockpit

• Carries passengers
  and/or cargo
• Located on tail or
• Raises or lowers
  nose of plane
• Controls “pitch”
• Controlled by stick in
  – forward and backward
• Located on tail or
• Moves nose of the
  plain left and right
• Controls the “yaw”
• Controlled by foot
  pedals in the cockpit
• Located on back of
• Rotates or banks the
• Controls “roll”
• Controlled by the
  stick in the cockpit
  – left and right
• Located on back of
  wings, usually inside
  the ailerons
• Increase lift
• Used during landing
  to stay up at slow
       Gliders –vs- Airplanes
• What makes a Glider different from an
• Are the Parts & Control Surfaces of a
  Glider shaped differently than an Airplane?
• If you were to make a Paper Glider would
  it be constructed differently than a Paper
• Does it fly differently?     WHY?
   Gliders: Pure Flying Vehicles
• Gliders stay aloft by
  balancing the forces of
  gravity, lift, drag & thrust

• Biggest Enemy is Gravity
  so Lift comes from
  surface area under wing,
  shape of wing & wings’
  Angle of Attack
             Surface Area
• To see how surface area works, Your
  Teachers will roll a piece of paper into a
  ball. Drop it and the paper falls.
• Spread the paper out and drop it, and it will
• The greater the surface area, the greater
  the amount of air pushing up on the wing
• So how will you increase the S.A. of Yours?
Angle of Attack
        • Angle of Attack is the
          Orientation of the
          Wing as it faces into
          the wind
        • Wing Structure &
          Stability will maintain
        • You will have to
          Engineer into your
          Glider the proper
          Angle of Attack
Time To Test Fly…
   not quite yet!
 It is time to start designing a
GLIDER that will compete in the
  maximum distance contest.
The Problem Defined
          •      Design a Paper
                 Glider that travels
                 the Greatest
              •     uses one 8 ½ x
                  11” sheet of paper
               •     No extra items
                   may be added to
                       the glider
• Internet Sites
  offering Paper Glider
• Books showing
  Glider Plans
• Talk to Family
• You will need to draw several ideas
  (use worksheets provided)

• Construct and record your results
  (use worksheets provided)

• Eventually…You will team up to share
  ideas/results & compete
• No flying Gliders in
  the Classroom
• Your Teachers will
  have launch sites set
  up in the Wood Lab
  to test the Distance &
  Accuracy of your
• Refine ideas in
  Classroom & Retest
  in Wood Lab
• You will form teams to discuss Individual
  Ideas and Results

• The Team will Pick an Idea to Refine and
  Prepare for

• The Competition will take place in the SGI
Are there any questions?