how to build a hang glider?
917959
My suggestion is don't be cheap and buy a real one.\nYou don't understand the positive and negative forces\non the frame and wing spar. It's not like building a kite\nand take it out for it's first flight. But If you think that you can\nbuild one and fly it with no experience with building or even\nflying one go right a head, I love it when I see some knuckle\nhead make the news, I just laugh my azz off.
341855
I used to make them as well..if you hold up three of your fingers.. this is the shape to put the sticks to start...Then insert the other two sticks horizontaly between the other ones. There is also a kite version..but its very hard to describe how to make it.
577856
I did this once. It's a bit of a challenge, but works VERY well. Build a "hexagonal" cage around the egg using drinking straws. Try to use smaller straws (girth) as building is much easier. Using hot glue, have the straws criss-cross in such a way to cradle the egg. You should wind up with something almost spherical.
721794
It's a pretty simple project. It's a car about the size of a matchbox car. But it's made out of lighter materials like wood or plastic. With a holes bored through the center in the shape of an "L" When the balloon is filled with air and released, the car moves forward by jet power from the escaping air. \n\nBasic directions: make or buy a small matchbox sized car made from plastic or wood. You can either drill two holes to form an "L" shaped passageway in the center of the car, or you can hollow out the car and glue small tubes inside it to make the "L" shaped passageway. Of course, you'll also have to put a small chimney with a lip on the top of the car; this holds the balloon in place. So, the balloon sits on top of the car. The jet exhaust points out the back.  Blow into the exhaust hole on the back of the car to blow up the balloon. Put your finger over the hole to keep the air in. Set car on the floor and release. As long as there are no leaks and the car's wheels spin freely, it should work fine. The lighter the car the faster it will go. The bigger the car, the more stable it will be. \n\nYou can try getting a pinewood derby kit from the local cub scout's supply store. However, you should replace the pine body with balsa wood. It's lighter. \nGood luck.
727989
You could try lots of things, like:\nbeads\nfoam balls with pieces of wood to hold the sides together\npaper mache \nclay \n\nReally anything that you can mold or put together would work.
1117041
So you want to fly a kite? I do not blame you, as it could be fun.\n1. Tie two pieces of wood (you can use plastic tubing or bamboo) forming a cross. The ‘vertical’ piece can be 24 to 36” and the ’horizontal’ 14 to 20” long.\n2. Sail material:\na. If you use paper for the skin then tie string (a upholstery thread will do just fine) at the corners of the formed diamond or tips of the cross. Attach paper to the string. The string will prevent the paper from ripping. \nb. If you use fabric then there is hardly any need for the string, however hemming the edges is recommended. \n3. Attach 4 strings (use butcher cord or a  Polyester 40 lb line) each about 36” to the corners of the diamond then tie the loose ends together.\n4. Attach a tail made of ribbons (anything you fancy, be creative)\n5. Attach a line (butcher cord or  Polyester 40  lb line) to the ends you tied earlier and go fly that kite.\n6. I recommend a proper spool for your line.\n\nEnjoy.
373091
just chk out these sites these should help\n\nhttp://www.wildtoys.com/MMMPage/MMMresources/LiftingBody/index.asp\n\nhttp://www.nasaexplores.com/show_k4_teacher_st.php?id=030107172620\n\nhttp://pterosaur.stanford.edu/log02.html\n\nhttp://www.greathobbies.com/rcsailplanes/beginners/rcsailplanes/index.php?PHPSESSID=7aba07b72d725d9326880171abacd11f\n\nhttp://vulpecula.us/simple/archives/2003/10/17/flying.php\n\nhttp://kohlin.com/air/soar-faq.htm\n\nhttp://72.14.203.104/search?q=cache:iOVvoiekkP8J:teacherlink.ed.usu.edu/tlnasa/units/Aeronautics/Part03.pdf+is+balsa+wood+gliders+better+than+styrofoam+gliders&hl=en&ct=clnk&cd=23\n\nmng.1432@gmail.com
459159
You need to be a bit more specific as there are various lines/risers on a parachute.\n\nDrop me a note of what you need and I will give you an answer.
520077
Have you tried the Pressurised Bottle Rocket?\n\nEasily constructed with used plastic bottles. What you need is a pump, cork and a tube. Build some tail fins to stablise the rocket for flight. You need to put in some water in the bottle. Then just pump the pressure up and you have an entertaining setup.\n\nHave a challenge who can shoot the highest and then parachute the Rocket down. The highest and/or the longest hang time wins.\n\nYou will need a field to do this properly though.
159881
Use cardboard, clay, or sugar cubs.  Cardoard would be the easiest.
196712
http://builder.com.com/5100-6373_14-5109284.html has a\nmini tutorial on it for you
139040
http://www.hurtwood.demon.co.uk/Fun/copter.swf TRY THIS FOR FUN  AND A LITTLE RELATATION.
391825
i believe you might find these 2 links useful, http://www.sunward1.com/woodkits.htm and http://www.redstoneprojects.com/trebuchetstore/build_a_catapult.html
711556
Gliders, being unpowered, do not stay in the air indefinitely...they are continuously falling.\nSomehow (through various means) a glider is raised up into the air and released.  At the very top, the glider has some amount of gravitational potential energy which is gradually expends to gain kinetic energy (so it can fly).  In order to keep moving, the glider must slowly fall.\nHow fast the glider falls depends on its mass and dimensions.  A large factor in determining how long the glider can stay in the air is its wingspan.  A larger wingspan allows the glider to "glide" better and keep itself up longer for a given mass....but make no mistake about it, it is still going to come down eventually.
873777
pack it in foam, put a parachute on it... and drop it from the BOTTOM of the 3 story building!!!
308773
you need a parachute to slow down the egg.  wrap the egg in some kinda of foam, secure it with some tape.  attach the parachute to the rest and drop!
876702
First you need to measure the diameter of the trampoline, or if its rectangular.  Then find yourself a contractor to dig a hole for you.  Oversize it aliitle bit.  Pour concrete pads or columns for the legs.  Set the legs on or in the columns.  As this is being done you also need to figure out the distance the trampoline will stretch in the downward position to give yourself the distance in the ground, so it will not touch the bottom where the hole is dugout for the trampoline.  I would definately secure it enough around the edges as well with other columns or pads that may be used as your secure points.  You can find clamps that will secure the rail of the tramp. and also afix to the pads or columns.  You will need to secure it in all areas where the tramp. will not tip or flip over on you.