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https://www.youtube.com/watch?v=3DG2H2-d-jQ
https://www.youtube.com/watch?v=gm-TvPhdR_Y
https://www.youtube.com/watch?v=kl2Yr5_QyBI
https://www.youtube.com/watch?v=hYnhMCLCX9Y
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https://www.youtube.com/watch?v=0qiCw5MZYXM
Explain to students that Styrofoam is lightweight and strong which makes it an ideal material to construct model gliders. Styrofoam trays can be obtained from the meat department of a grocery store.
https://www.youtube.com/watch?v=EkRCDT-2HLQ
https://www.youtube.com/watch?v=_Dof_Ks-f9U
https://www.youtube.com/watch?v=ChM5BjNiJtE
Gliders can remain flying as long as there is lift available. Using thermals, this is about 8 hours. By using prevailing winds blowing up a slope, a glider can be flown for as long as the wind is blowing.
Amazingly, gliders. The non-powered planes can, in skilled hands, whip up a speed of over 300 mph from a relatively slow wind. That’s a velocity of around 8x the speed of the air driving it.
https://www.youtube.com/watch?v=FRIKh17g6Ys
https://www.youtube.com/watch?v=ufU5s9ljwZA
Unlike airplanes with engines, however, gliders must be towed, or pulled, into the air to begin their flight. … As the glider’s speed increases, air flows over its wings at a faster and faster rate. This produces an upward force, called lift, on the wings.
The wings on a glider have to produce enough lift to balance the weight of the glider. The faster the glider goes the more lift the wings make. If the glider flies fast enough the wings will produce enough lift to keep it in the air.
https://www.youtube.com/watch?v=aQ8F5F3yGGc
https://www.youtube.com/watch?v=TQi2x0B0t9c
https://www.youtube.com/watch?v=0IFjDdHzmRA
https://www.youtube.com/watch?v=aV1Uh-3d_-U
Hold the Plane behind the centre of the plane’s gravity centre. Keep your left foot slightly forward and launch it in 30 – 40 degrees angle, throw it steadily with a medium force. If it fails, tweak the tail wing slightly up and try again.
Drag, lift, weight and thrust – this need to be in balance for the plane to fly (Scholastic 2014). From the results of testing design number 2 flew the furthest with both the plane launcher and people throwing it.