Paper Airplanes

They are used to propel the airplane forward to get air moving across the wings. When air moves across the wings lift is created and you take off. Another interesting note: A propeller is an airfoil just like a wing is.

They make the airplane more versatile, less expensive, or both. A similar question is, "now that they have jet airplanes, why do they make propeller planes at all?" First, a propeller plane is less expensive than a jet. Let's give you six million dollars to buy an airplane, and make you buy new. $6 million gets you an entry-level jet. It will carry four executives if they restrict themselves to one suitcase each. The same $6 million will get you a Pilatus PC-12 or a Beech King Air B200, which are basically small airliners, or it will get you two EADS Socata TBM 850s, three Cessna Caravans, or three Piper Meridians. And that's just turboprops--$6 million will get you about a dozen piston planes. The other reason, and this is more important for a lot of operators, is that the propeller plane is more versatile than a jet. You can land on unimproved airstrips. You can land on top of mountains. In Mel Gibson's movie Air America there's a scene where he lands a Pilatus Porter on the side of a mountain--the real Air America pilots in Southeast Asia did that a lot. Jets, unless they're built for the military and equipped for rough airfield service, have to fly onto paved airstrips. Airbus is busy designing the A400 military transport. It has four turboprops. The drawback of a prop plane is that it can't be very fast--if you need a plane that flies faster than 400 knots, you need a jet. Prop planes don't fly as high as jets do; a King Air will fly up to 31,000 feet above sea level, while business jets routinely ply the skies above 41,000 feet. Propellers are not used to force air across the wing. they are used to create motion. In other word make the plane move and it's the resultant forward movement that moves air across the wing to create lift and get the plane off the ground

The size of the paper does affect the distance it travels, but it also makes it heavier.

i would assume just like general aviation it would be lift (upwards) weight or gravity (downwards) thrust (forward) and drag (backwards)

Of course! If the airplane is very thick it will go very fast. I learned that from my project.

The answer to this question is a matter of some fairly simple physics which I will try to explain to you.

First, you need to understand that most paper airplanes are not really airplanes. Airplanes fly because the shape of the wing produces lift; paper airplanes mostly fly as projectiles, meaning that they fly because you throw them.

The first reason that the lighter airplane might not fly as far is in the design. Typically, the lighter paper airplane will have larger wings, and therefore, more drag. Since it is virtually impossible to make the paper airplane perfectly symmetrical, one of the wings has more drag which causes the airplane to spin and crash short of its maximum possible distance.

The second reason is also related to the design. If you have a light airplane with more drag and a heavy airplane with less drag, the heavy airplane can fly much more easily. This is because the heavier airplane has less drag as well as more momentum to "push" through the air. On this note, a piece of paper crumpled into a ball will fly further than most paper airplanes I have seen just because is has lots of mass for the level of drag it induces. The crumpled piece of paper also will probably fly much straighter that the paper airplane too, just because it is fairly uniform in shape. At this point, we are completely ignoring lift; but at such a small scale with such light material, it works better that way due to the reasons above. Of course, if you put engines and control surfaces on the paper structure, you change the game entirely. Now it has to fly with lift instead of as a projectile otherwise it will crash because it has no control. This explains why real airplanes are not just big balls of metal.

Japanese origamist/engineer built a paper plane called the sky king spending 11 years to make it finally made it perfect enough to last 27.9 seconds in the air his name Takuo Toda broke the record of 27.6 seconds

Hi

I hope you are not trying to cheat your way into the record books with this question, But honestly there is a paper plane world championships. Just google the "Paper Plane World Championships" to see what is going on.

Using a specially designed 10cm long paper plane, Takuo Toda's origami flight in a Japan Airlines hangar near Tokyo's Haneda Airport lasted 26.1s.While just short of the world record 27.9 seconds, it was a new record for a paper-only plane -- the world record (also held by Toda) was set by one with tape on it.

Toda - head of the Japan Origami Airplane Association - said he was pleased with the record but hopes to achieve a 30 second flight soon.

Research shows that for a stunt paper airplane, smaller wings with forward-concentrated weight are optimal. For a glider, make a large wingspan and light, evenly balanced weight. Also, the wider the wings are the easier it will be to gain lift and the more narrower the wings are the harder it will be to stay in the air longer.

Not too sure what you mean by modifications, but I'll have a go.

A basic one is those little flaps on the side of the wings; always a good one to keep it stable. I'm not sure what the different between flaps that go up or down.

Another is the stabilizer, by a simple vertical cut in the body of the airplane (The strip you hold), then folding the other way so it makes a triangle which stabilizes the airplane.

Then there is my personal favorite: ailerons. If you don't know what they are, I advise you to look them up, they are very interesting.

You can make them by cutting two slots out of the back of both wings. Make two cuts on a wing and you should get a small rectangle that can be folded up or down. Do this to both, and by changing their position before flight, they can make the plane do many things, it's cool to experiment.

Hope these help!

Generally, the best way to construct paper airplanes in an assembly line fashion, is to complete each assembly step for the entire production batch, before proceeding to the next step in the assembly process.

The primary reason why the aeroplane was invented is that man had seen the birds fly and he wondered if he could build a machine that might take him up into the air.

A paper airplane can be rolled using the surfaces used on real aircraft. Ailerons, elevons, spoilerons or differential deflection of horizontal stabilizers (which, in most semi-tailless paper airplanes is essentially the same as elevons).

it does effect the plane because the wider the wings are the easier it will be to gain lift and the more narrower the wings are the harder it will be to stay in the air longer.

Paper airplane's velocity can be measured as any other object can be determined by measuring its displacement over time. In other words, time the glide and measure the distance. Then divide the distance by the elapsed time to get the average velocity of the flight.

I am doing a science project in school. Subject: How does temperature affect the way a paper airplane flies?

Take a piece of computer paper, and fold it hot dog style. Unfold and fold the top corners to the crease you just made. No fold the new top corners in. I should look like two stretched out triangles. Fold it in half so the triangles are not seen. I now should look like one triangle. Now fold one side down so it make two smaller triangles. Do the same on the other side. Bring the wings up a bit and throw!

you have to turn one flap up and the other one down to get your paper airplane to do a barell roll

u don't because if it's made out of paper it's not made out of popsicle sticks.

a paper clip wheighs about 3 kilograms

"Flight of Innovation: Exploring Aerodynamics Through Paper Airplane Design"

The wing of the paper airplane can make it fly far. For a glider, make a large wingspan and light, evenly balanced weight. Also, the wider the wings are the easier it will be to gain lift and the more narrower the wings are the harder it will be to stay in the air longer.