The paper Jet Engine

With my guidance, you will create paper model jet engines for use on the mono and biplane.

Step 1 Cutout

Cut the paper at the 2 inch mark. Save the scraps for the prop and bearing.
Wrap the paper over the bottom of the marker, and tape. Mark the wide and narrow ends.
Measure the diameter of the wide end, and cut a square out of the scraps so that the length of side S = diameter of tube W

Comments

[Michaelgoode]

Its not fake, he is blowing into it creating thrust, if you threw it it would spin like he shows

[TehBox]

Attaching these "jet engines" will only cause drag and ultimately slow down and crash any paper aircraft. The spinning of the turbines in the video file was the authors breath (if you did not know that). In conclusion, this cleverly designed contraption (this is a compliment!) is just for looks.

[gunmanx]

wats a mono and biplane

[Legend]

Monoplane - the typical plane, with just one layer of wings. Mono means single - one. Biplane - The old fashioned planes such as in World War One, with two layers of wings. Bi means dual - two. Triplane - Three layers! Whats four...? Quadroplane? There were some wierd German designs with more than four layers (didn't work of course!)

[the poodleo]

what the creator means is that it's mainly for use on his other instructables, if you look up his name, you'll get an instructable for monoplanes and biplanes. but sorry, he dosn't show you how to make centaplanes.

[foxtrot4697]

centaplane!!!that would be messed

[jayro707]

f-n smart very good description...sweet

[brandon borick]

they hade a 23 wing plane

[Crakur]

the germans had some seriously messed up designs...

[Legend]

Hell yeah, like the Heinkel Lerche.
"The Lerche was an early coleopter design. It would take off and land sitting on its tail, flying horizontally like a conventional aircraft. The pilot would lie prone in the nose. Most remarkably, it would be powered by two counter-rotating propellers which were contained in a donut-shaped annular wing."

Image:
http://efg.aidemac.net/images/avions/fbb/fbb_heinkel_lercheav.jpg

[cormac3050]

WTF? That,s crazy!!

[cowscankill]

WHAT THE HECK?! LOL!!!

[blugyblug]

LOL AHAHA Thats so awesome, everyone would think it was a UFO

[Crakur]

there was also one I saw that looked like a rocket but had 4 shafts that spun around a central motor right below the cockpit. on the end of the shafts there would be an other motor with a prop. it could take off vertically and was meant to be a bomber escort. sorry no picture :'(

[knexsuperbuilderfreak]

yep they had a ufos really!!

[Gdz2010]

A recent study of old bi and tri-plane aerodynamics using CFD found that they sometimes actually had a negative effect on lift because the higher pressure from the top airfoil would cancel with the lower pressure above the lower airfoil. -Just an interesting fact to take into consideration for future model designs.

[Legend]

Cool, thank's for the spipet ;-)

[fantacmet]

It's far from fake.  You can havae electric jets too.  It's just not a "modern" style jet engine.  Most people don't realize that there is more then one type of jet angine.  This one is all mechanical, it's called a DUCTED FAN.  Which is a type of jet engine, when done in this manner.  IT's a cool concept and pretty slick. 

If the fan has enough power, adding a nozzle could help increase the thrust.  As would shrinking the distance between the edges of the blades and the walls of the tube.

[the poodleo]

yes, i understand its a real engine, but does it atually create thrust? i f i but this on a paper airplane, would it make it go faster, or is it just for looks?

[the "wow shammy"]

i am confused, what does it run on, how do you ignite it.

[the poodleo]

i agree. i dont think its fake, but how to make it run is a question. i think it runs automaticly, as soon as you throw the plane. i made mine out of paper, so i think it may be too flimsy.

[needfortoast]

It's fake

[hitman400]

its paper; if you light it the whole thing will go up. Still...

[cowscankill]

Wow. I never realized how cool this is, even though I saw it before.

[dig-dug]

This isn't as much a jet engine as it is a pinwheel, i mean pinwheels are cool... right? don't beat yourself up.

[davidorchard]

that is pretty neat, i want to see it attached to a plane.

[Shut Up Now]

.. thats what it is made for.. read the instructable.

[Runnerdude]

hmm... I like the rubberband idea.

[Wetwillie1800]

Utterly Useless... Making it Utterly AWESOME!!!

[bunnykill100]

mod it to attach rubber band so it spins from rubber band power and will propel airplane? I would LOVE to see that!

[knex gunman]

this isn't at all a jet engine. it is more of a fan in a tube.you need a motor and some fuel to ever think about it being a jet engine.

[Aeshir]

I don't get it. What exactly is this? Is it just aesthetic? If it is, it's still pretty cool.

[SoDDiggerCpl]

Its a paper jet, which you can attach to a paper airplane, and it spins when air passes through it.

[Aeshir]

Sweet! I gotta make a couple o these!

[wertokz]

?