In general, even if there is nothing special scout, balloon, complete with a small TV camera, It will allow you to look at their homes, at their home, and possibly for himself with a bird flight. And this possibility falls is not for everyone. And the reason is one - is not so easy to pick up a camera to a height of 100 m, even if it is tiny and weighs '30.
To implement his plan, advise young modelers first to make their own simple and, perhaps, the easiest balloon. Material for its shell will tissue paper. Start with the preparation scan pattern of one element. We will execute it on a grid with a mesh size of 5 × 5 mm. By narrow edge glue the two sheets of drawing paper dense. Put it in the net life-size, then carefully repeat the template contours. In this work, be sure to use large patterns. After ensuring that the work is done with appropriate quality, to one side of the curve Build out parallel to it at a distance of 10 mm. This allowance is necessary in order to glue the parts together.
Now we can finally cut out the template and use it in the future to replicate any number of blanks.
Cigarette paper 12 immediately zagotovte identical parts. Using PVA glue or bustilat, very carefully, slowly, make the assembly of the ball. This work is very laborious, requires the utmost attention and clean hands. Try to keep the glue drops do not fall on the open part of the shell. To reinforce the assembly on top of a ball round stick paper disc of 100 mm diameter. From the bottom of the neck of the ball will have to tinker more.
On the circular ring paper 100 mm in diameter and 40 mm height First glue lower ends of scans, and then further strengthen another paper ring. When the adhesive sets, it is possible to produce a trial filling air ball. To do this, type in his throat outlet of the vacuum cleaner. Literally for 3-4 seconds straighten shell, forming a ball diameter of about 1250 mm. This volume is selected randomly. If you fill it with warm air, its lifting force will be equal to 300 g But not all of this force will be involved in the rise of the model. Because you need to take into account the weight of the paper envelope and glue. paper ball made of this technology weighs about 180 g So that the lift is greater than its own weight of the model by about 120 g Field starts you have to prepare more support platform - a circular metal ring on a tripod - and two extensions. How is the launch? First of all, choose calm weather, it is best early morning or evening.
On the open lawn in the center of the tripod set. On its ring is put on the ball neck. On top ring passed through two halyard - fishing line diameter of 0.8-1 mm thick or twine. The ends of each tether tied to stakes, and they, in turn, is driven into the ground. Most modelers shell filled with hot air. That's what is needed, and a metal tripod. Under it kindle a small fire of paper bundles and small sticks. But this method is not very good. The flames could ignite the tissue paper and the ball goes down. A far more effective method - the use of fan heaters, for example, a hair dryer drying.
hot air temperature at the outlet is 100 °, that fully satisfies the start conditions.
Direct the jet of hot air from the dryer into the shell, and it starts right in front of cracking. Once its walls acquire a proper elasticity, both halyard can be released, and the ball will fly up beautifully. Having mastered the technology of manufacturing and technology start-up balls of paper, you can move on to making your balloon reconnaissance. Minitelekamera weighs only 30 grams, but its optics with a height of 100 m allows to observe an area of 1.5 ha. As an example we can take a camera unpackaged black and white image production Sun Kwang South Korean company.
A camera equipped with a lens with a focal length of 3.6 cm. The lens provides a field of view of 74 × 55 angular degrees. It connects the three-wire cord thin black - total (positive) and yellow - the output video signal. It through the appropriate connectors plug into the video input of a TV or VCR. The fact that from the camera, which is mounted on the ball, extend conductors, is quite logical, because your ball is tethered.
Do not let the TV camera to the wind! The camera and the conductors at least 100 meters in length will have a total weight of about 280 g It is easy to calculate that in such settings a small bowl from the ground does not come off. So we have to perform a balloon volume of 2-2.5 times more. This can be raised to 800 g load. Try independently recalculate the given parameters dimensions scans shell new ball. Tissue paper, replace the thin plastic wrap. The edges of the blanks between them have not glued and welded. Attach a camera to the lower ring, a special ears for it.