Showing posts with label air. Show all posts
Showing posts with label air. Show all posts
Monday, 20 February 2012
Friday, 15 July 2011
How to make a Super charge electric Air plane
Hi guys do u wish to send a paper plane more than 100 feet, then just follow this
The single-sheet paper airplanes you made when you were a kid (or perhaps last week in your cubicle) were, well, kid stuff compared to this beefed-up paper craft, which uses an electric motor from an old pager or toy powered by a big electrolytic capacitor. Known as a "Gold Cap" and made by Panasonic, the capacitor charges from a battery pack and then metes out a steady flow of power to keep your propeller whirring for about 10 seconds-just long enough to send the flyer airborne and carry it between 30 and 100 feet. (You can also add a gearing system to squeeze out even more flight time.) We've created plans for an eAT-6 "Texan" airplane and put them here and here to get you started. Just think twice before blindly launching this one soaring over the wall of your cube.
Build a Motorized Paper Airplane
Cost: $14.29
Cost: $14.29
Time: 3
Hours
Easy | | | | |
Hard
Things Needed :
- Paper eAT-6 plan (free; here and here)
- Two 9x12-in. sheets smooth Bienfang Bristol Board (19 cents ea.; dickblick.com)
- T-6 Texan Vacu Canopy ($2.96; squadron.com; #SQ9523)
- Panasonic 2.5-volt 3.3F Gold Cap ($5.22; digikey.com; #P6966-ND)
- Small electric motor (free; salvaged)
- Plastic propeller (57 cents; towerhobbies.com; #LXHHV9)
- AA four-battery holder (90 cents; digikey.com; #BH24AAW-ND)
- Two header pins (27 cents; jameco.com; #103185-3)
- Four AA batteries ($3.99)
- Or you can find these above stuff at your near by electrical hard ware store
STEP1 : PRINT THE PARTS
Download the eAT-6 plan PDF here and here and print each sheet on a separate piece of Bristol Board, or any thick paper that works in your printer.
STEP 2 : ASSEMBLE THE BODY
Carefully bend and glue the fuselage and wings into shape. Add the cowling and elevator, and glue the wings in place. Decorate it with decals or markers.
STEP 3 : MOTORIZE IT
Solder the Gold Cap to the motor, and solder two three-inch wires to the Gold Cap terminals on one end and header pins on the other. Slide the power system into the plane, and route the header pins out of the tail. (The capacitor should sit near the rear of the cockpit.) Glue the engine-nose disk to the front of the cowling, and add the cowling trim ring. Affix the plastic propeller to the electric motor's shaft.
STEP 4 : FUEL UP
Carefully bend each wing so it's angled up slightly. Install the AA batteries into a battery holder, and connect it to the header pins sticking out of the plane to juice the capacitor. Charge the plane until the motor is spinning at its maximum rpm, and disconnect it.
STEP 5 : FLY AWAY
Hold the plane and point it into the wind. Launch using a flinging motion with your arm, not your wrist. The plane will fly in a left-hand circle, the diameter of which depends on the amount of deflection that you bend into the rudder [see plans: 1, 2]. Bend the elevator slightly upward to make it climb.
Sunday, 3 July 2011
Candle powered hot air balloon
Build a candle powered hot air balloon using painter's plastic, balsa wood, and birthday candles.
Step 1
Cut the plastic and heat-seal the edges.
Layout your materials on a large sheet cardboard.
Pull out approximately 6 feet of the painter's plastic and cut it forming a sheet 9 x 6 ft. It's important to have plastic that is 1/2 mil (12 microns) or thinner. Thicker plastic is too heavy to fly.
Fold the sheet in half along the 9 ft side forming a two-ply sheet 4.5 x 6 ft. Use a hot knife to seal the two 4.5 ft edges. An electric hot knife makes this really easy, but it can also be done with an old metal knife heated over a flame.
Check your edges and correct any large holes. A few small holes won't cause problems.
Layout your materials on a large sheet cardboard.
Pull out approximately 6 feet of the painter's plastic and cut it forming a sheet 9 x 6 ft. It's important to have plastic that is 1/2 mil (12 microns) or thinner. Thicker plastic is too heavy to fly.
Fold the sheet in half along the 9 ft side forming a two-ply sheet 4.5 x 6 ft. Use a hot knife to seal the two 4.5 ft edges. An electric hot knife makes this really easy, but it can also be done with an old metal knife heated over a flame.
Check your edges and correct any large holes. A few small holes won't cause problems.
Step 2
Melt candles together and attach them to balsa. Again, an electric hot knife makes this step a breeze. A heated fork can achieve the same results. Make sure to do both sides.
Once the candles are attached together, melt them to the middle of a piece of balsa wood 3/16 x 1/8 x 36 inches.
Once the candles are attached together, melt them to the middle of a piece of balsa wood 3/16 x 1/8 x 36 inches.
Step 3
Assemble the balsa frame.
Make an "H" with the 36 in balsa and candle piece and two 3/16 x 1/8 x 30 in balsa sticks. Make the joints with a small piece of clear tape.
Make an "H" with the 36 in balsa and candle piece and two 3/16 x 1/8 x 30 in balsa sticks. Make the joints with a small piece of clear tape.
Step 4
Tape the balloon to the balsa frame.
Step 5
Use a stick inside the balloon to hold the plastic away from the candles and light them. Keep holding the plastic up until enough hot air has filled the balloon to inflate it.
Step 6
It's an amazing feeling when your creation first gets lift and starts to take off.
At this stage, there's about ten thousand things that could go wrong. Carefully think everything through before you actually do it.
I tied some thread to mine so I could fly it inside our warehouse without it getting away and setting the place on fire.
It will drip a lot of hot wax, so keep it over the cardboard if possible. Also, if you let the candles burn all the way down, the balsa will catch on fire. I am currently experimenting with other types of candles to prevent this.
Fly safe!
At this stage, there's about ten thousand things that could go wrong. Carefully think everything through before you actually do it.
I tied some thread to mine so I could fly it inside our warehouse without it getting away and setting the place on fire.
It will drip a lot of hot wax, so keep it over the cardboard if possible. Also, if you let the candles burn all the way down, the balsa will catch on fire. I am currently experimenting with other types of candles to prevent this.
Fly safe!
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