The main material is the stiff cardboard used in the construction of pizza boxes, although any stiff corrugated cardboard will work equally well.
Built and balanced carefully this small glider flies extremely well.
Things to Emphasize
| Glider Plans
||The diagram to the left shows the scale plans for a simple glider.
The grid is a one centimetre square. ( i.e. each square is 1cm x 1cm).
The dimensions are suitable for layout on a large pizza box lid. The fuselage and vertical stabilizer should be cut out as single piece.
A small slot is cut in the tail of the glider to accommodate the horizontal stabilizer.
| Top View (assembled)
|| The diagram to the left shows the assembled glider as seen from above (top view).
The pieces are held together using ordinary white multipurpose glue.
Allow the glue to harden overnight before handling and balancing the assembled glider.
| top view
The materials needed are shown in the figure to the left. Note: safety glasses should be worn when cutting heavy materials such as cardboard with a craft knife.
The sharp tips of such knives are prone to snapping off under excessive pressure and may become dangerous projectiles.
Transfer the glider plan to the top lid of the pizza box using the dimensions shown on the plan.
All dimensions are in centimetres.
| side view
Once the plans are drawn on the top of the box, each piece should be carefully cut out.
Two large books can be used to hold the fuselage upright while the wing and the horizontal stabilizer are glued in place. (Be careful not to get glue on either the books or the table top.)
| front view
Obtain a printed copy of the top view of the glider
Using this drawing, determine (by calculation) the line which divides the forward and rear sections of the planes' top view into two exactly equal areas.
Mark the tips of the wings along this line and insert a small pin into each wing tip so that the glider can be balanced between two books (or other suitable supports.)
Using Plasticine or window putty, add mass to the nose of the glider so that it balances almost exactly. It should be very slightly tail heavy. (see the photo to the left).
Your glider will have to be flight tested.
Based on the glider's initial performance it may (or may not, if you have been careful) have to be trimmed by adjusting the centre of mass.
If several gliders have been built, a very useful exercise is to compare the construction of those that have good initial flight characteristics with those that have less desirable flight characteristics.
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