Y'all probably seen Prony's stunt plane:
As he said, its unpredictable (no harsh feelings Prony). Hence I came up with this instructables to make this wonderful plane more predictable and of course, glide! (i do not take full credit of this plane as i was not the inventor of this plane)
Thats the wonderful plane below...
Step 1: Paper, Hands, Energy...Lets Start
Paper -- preferably A4 sized, sturdy (not flimsy ones that are thin as skin from a pad of Tesco Value paper -- if u happen to want to use those, use like 2 sheets of paper --)
Your hands -- preferably with 5 digits on each hands etc.
Energy -- though you won't need much to make this plane, do have some energy in store for launching!
Step 2: Folding...
We start by making the plane's 'nose'. !Remember to make your creases a crisp as poss!
1) fold paper to form a right angled triangle, so that the top edge of the paper (when placed portrait) touches the right edge of the paper.
2) open paper up and do the same to the other side (folding top edge down to left edge and making a right angled triangle.
3) open paper up.
4) flip paper over and fold the top edge down halfway the X mark from the folds so that the top corners meet with the bottom of the X)
5) open paper up and flip paper over, so that the previous crease has made a little hill if you put the paper 'flat' down
6) pick up paper by the edges of the peak of the 'hill' and gently push the cross over points of all crease liines back with your thumbs.
7) the top edge of the paper will be sitting on top of the side edges that are folded when u push the top flap down after step 6.
8)fold the top flaps up as show in the 4th picture and do the same for the other side. !!! IT IS IMPORTANT THAT YOU DO NOT DO ANY 'CENTRE FOLDS' (making a fold in the centre to create a centre line) AS THAT WILL MAKE THE PLANE A BIT FLIMSY !!!
9) fold the top top flaps in again as show in the next picture and repeat on the other side too!
10) fold the tip of the nose down so that the fold line of that will be along the horizontal edges of the previous fold.
11) tuck the flaps made from step 9 into the pockets in the folded tip.
12) flatten that out...OR...make it a bit puffy but still sturdy to act as an accelerator.
Step 3: Give It Glide...
1) have your plane placed so that the nose job you've just done to it is not visible (i.e. blank side).
2) fold along red line as show in first picture below.
3) fold along the blue line as shown in the next picture below, so that the top edge side edge of this fold lies directly on top of the side edge of the whole plane.
4) repeat steps 2 and 3 on the other side
Step 4: Preflight Checks
1) adjust the stabilisers so that it stands at a right angle at each fold, so that your stabiliers are standing 'upright'. *tick!*
2) make sure the nose is as symmetrical as it possibly can...a crooked nose is always a bad sign for planes. *tick!*
3) have a look at the plane from the front and the back...adjust anything that is not symmetrical so that the plane IS symmetrical. *tick!*
4) hire a pilot. *tick!*
5) Trapezium plane is ready on the go! (yes, thats its name, trapezium).
1) hold the plane on the sides of the nose (the isocelese triangle)
2) in a swift and gentle throw, release plane (try to release when plane is parellel to ground or slightly tilted upwards)
Step 5: If U Didn't Get Me...
o and...the quality wasn't the best...cuz i only have a cheap webcam to capture it.