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A paper airplane can be inserted into a rigid cardboard
envelope against the resistance of an elastic strung across
both inside walls. The airplane will thus be in an elastic
slingshot. The narrow confines of the envelope will prevent
the elastic from crushing the paper airplane. The envelope
can be demarcated with a dotted line to indicate that it
should not be opened from the top or bottom, but one of
the two narrow sides which is not unusual. Once this
portion of the envelope is torn away and the envelope
gently squeezed, or blown into with a breath of air, the
paper airplane will eject under the resistance of the elastic
band, spread its wings and glide across the room or into any
obstruction in its path.
youtube: Paper Airplane Launching Envelope Demonstration
http://www.youtube....kE&feature=youtu.be
[rcarty, Dec 22 2012]
The closest example I could find
http://us.123rf.com...-paper-airplane.jpg
[rcarty, Dec 22 2012]
Close but not plane.
http://www.bing.com...D02CCB6722B&first=0
[2 fries shy of a happy meal, Dec 26 2012]
[link]
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Lets see some video of it in action. [+] |
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I'm having trouble believing this is an orginal idea, because it's such a simple concept. If anyone finds an example of it somewhere I'd like to see it. Several people will be receiving these from me in lieu of cards. |
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As mentioned I'll be giving some of these prank envelopes
for christmas, and I've been working on a larger paper
airplane. By placing some sort of elastic bridge across the
wings, they can be encouraged to open. Spring loading
the envelope is easiest if a long pin is inserted through the
corners to hold the elastic in a stretched position. Then the elastic stretched. Then
the airplane can be inserted and the envelope closed.
Once closed the pin can be removed. |
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Also the aircraft can be deployed from opening a card. |
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Also how much power can be concealed in one pack. |
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And it becomes a small pouch. |
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[+] waay better than the button+elastic gag. |
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Can the aeroplane be made to release another envelope after it's launched? - containing a small croissant of course. |
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You were going russian dolls with that. Possible that the largest envelope could be constructed from heavy cardboard, and the smallest envelope airplane constructed from rice paper, or cigarette papers. Proportional elastics at each stage. Each airplane would have to glide upon an envelope, and once a small parachute deploys from the body of the airplane, the next stage is released. |
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Perhaps easier to think of a wound elastic band,
which spins some kind of propeller once released. |
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The best one I made was in one of those typical top opening envelops, and the airplane was in the bottom spine of the card, and when the card was pulled out the airplane flew out. |
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\</__/ airplane emerging
|____| envelope
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(+) I've seen something similar using wind-up butterflys, [link], (took long enough to track down...) and there is also a card which dispenses several collapsed cube shapes which spring out of the card into a 3d pile of boxes when the card is opened, but I can't find that one. |
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/or blown into with a breath of air/
One blows into the orifice from which the plane then emerges? Will it fly into your mouth? Or your nose, if you are blowing with your nose? |
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Someone criticized me just like that, but more accusingly of perhaps not being able to speculate about such possibilities and as a result causing harm, but there is comedic value in someone getting hit in the face unexpectedly from something innocent a la mode de Americas Funniest Home Videos, and like the tragic comedy of yore the emotional harm of tragedy is offset by laughter at least to the audience, and it has to be accepted that actors in any situation are to some degree acting unknowingly, and perhaps this willful ignorance, that causes one to stumble throughout existence out of blind trust for accepted practices, for example not expecting projectiles in cards, is reason enough to justify being struck by an airplane facially. But beyond that, it's really about a world where there isn't a readiness of all kinds of ideas, because they are not conventional, or they might be criticized somehow, or they don't conform to the thermodynamic constrainsts of a rationalized multitude, so let there be planes in cards, and cards in envelopes, and if it transpires planes in faces because it's not about what happens, but ultimately the idea about what can happen, and indeed what has happened. |
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Why not just make a small battery and motor paper air plane and throw it? Or you could try a rubber band and a stick? |
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