-
Preparation materials: white thread, 502 glue, plastic wrap.
Process: Use a 2-meter-long white line (slightly thicker), tie it into a circle, brush it with 502, dry it, so that the shape is fixed, and then cover it with plastic wrap to form an arched top, and the edge is glued with 502.
Critical: The weight of the umbrella should be light, preferably no more than 10g; How to put together a large piece of plastic wrap requires you to use your own brain, do not use any tape and glue.
If you do the above, you shouldn't have any difficulty winning the championship.
-
Here's a simple process of making a homemade parachute:
Material: A large handkerchief or cloth.
Four ropes of equal length.
A small weight.
Steps:1Tie one end of the four ropes to each of the four corners of the cloth and the other end to a small weight.
2.Cut the fabric diagonally to form four triangles. Doing so increases air resistance and makes the parachute more stable.
3.Hang the weight under the parachute and throw it into the air. The parachute will, and the weight will start to fall because of gravity.
If you want to increase the time that your parachute stays in the air, you can consider adding the following elements:
1.Larger cloth: Bigger cloth means more air resistance, which can keep the parachute in the air longer. But be careful not to be too big, otherwise you may increase the weight of the parachute.
2.Heavier weights: Heavier weights require more force to pull down, so parachutes can stay in the air for longer. But be careful not to be too heavy, otherwise you may make the parachute impossible.
3.Change the length of the rope: The longer the length of the rope, the larger the area of the parachute, so it can stay in the air longer. But be careful not to be too long, otherwise you may make the parachute unstable.
In conclusion, there are several factors that need to be considered to make a homemade parachute that stays in the air for a long time, and experiments are needed to find the best combination.
-
The main ways to increase the time in the air:
1. Increase the height of the parachute (basically the higher the better in the windless state).
2. Increase the effective area of the wing (the bigger the better).
3. Reduce the weight of the wing (use lighter and thinner materials).
4. Increase the number and length of paracords appropriately (not the more, the better, depending on the size of the umbrella surface, 6 12 is appropriate).
5. Appropriately reduce the weight of the suspended object (not the lighter the better, it is advisable to account for about 10 of the weight of the whole umbrella).
-
Make the parachute bigger.
In this way, there is more air that can be carried, the resistance is greater, and the descent is slower. When the Soviet Union experimented with the Great Ivan hydrogen bomb, a large parachute of 1,600 square meters was used.
-
Here's how to keep your parachute in the air longer:
1. Increase the height of the umbrella, the higher the height of the umbrella in the windless state, the better.
2. Increase the effective area of the umbrella, the larger the effective area of the umbrella, the better.
3. Reduce the weight of the wing body and use lighter and thinner materials, such as nylon, plastic, polyester, etc.
4. Appropriately increase the number and length of paracords, the specific number depends on the size of the umbrella surface, with 6 to 12 pieces is appropriate.
5. Appropriately reduce the weight of the suspended object, which should not exceed 10% of the weight of the whole umbrella.
-
Increase. Stuck in the air.
Time main method:
1: Increase the height of the wing (basically the higher the better in the windless state) 2: Increase the effective area of the wing (the larger the better).
3. Reduce the weight of the wing (use lighter and thinner materials).
4: Appropriate increase.
Paracords. Quantity and length (not more is better, depending on the size of the umbrella surface, 6 12 is appropriate) 5: appropriately reduce the weight of the hanging object (not the lighter the better, to account for about 10 of the weight of the whole umbrella).
-
Hello, glad to answer for you It takes some time to type, so please wait.
The main ways to increase the time in the air:
1: Increase the height of the wing (basically the higher the better in the windless state) 2: Increase the effective area of the wing (the larger the better).
3. Reduce the weight of the wing (use lighter and thinner materials).
4: Appropriately increase the number and length of paracords (not the more, the better, depending on the size of the umbrella surface, 6 12 is appropriate) 5: Appropriately reduce the weight of the hanging object (not the lighter the better, to account for about 10 of the weight of the whole umbrella).
Any more questions? You can also pay attention to the answer.,If you have any questions in the future, you can directly consult.,If you're satisfied with my reply.,Please give me a thumbs up after the end of the point Thank you.。
-
The main ways to increase the time in the air:
1: Increase the height of the wing (basically the higher the better in the windless state) 2: Increase the effective area of the wing (the larger the better).
3. Reduce the weight of the wing (use lighter and thinner materials).
4. Increase the number and length of paracords appropriately (not the more, the better, depending on the size of the umbrella surface, 6 12 is appropriate).
5. Appropriately reduce the weight of the suspended object (not the lighter the better, it is advisable to account for about 10 of the weight of the whole umbrella).
-
The main ways to increase the time in the air:
1: Increase the height of the wing (basically the higher the better in the windless state) 2: Increase the effective area of the wing (the larger the better).
3. Reduce the weight of the wing (use lighter and thinner materials).
4. Increase the number and length of paracords appropriately (not the more, the better, depending on the size of the umbrella surface, 6 12 is appropriate).
5. Appropriately reduce the weight of the suspended object (not the lighter the better, it is advisable to account for about 10 of the weight of the whole umbrella).
First of all, whether you are an interesting woman or an interesting man, you must learn to read. People who read books are really interesting. I once knew a girl who came from a scholarly family, her parents were both university professors, and she started reading from a few years old until she was in her twenties, and every night when she went home and washed up, she had to read for two hours, and she took out a book from her bag to read in her free time. >>>More
Eat less and talk less, but don't give less red envelopes.
We are taught to be a good person from a young age, and we are constantly working hard. Sometimes not doing what people should do can lead to self-blame. And when we have been good people, in addition to a moment of joyful answers, we often fall into deep pressure. >>>More
You should look at the secret of a gentleman, usually speak and act in an atmospheric and mostly way, so that you can be more masculine. Read more literary masterpieces and don't read those bubble literature. A lot of boys love anime, but they also like masculine sports like basketball and football. >>>More
1. Allocate teaching time reasonably.
When talking about the criteria for optimizing the teaching process, the former Soviet educator Babansky emphasized that it is necessary not only to look at the teaching effect, but also to see whether the time and energy consumption of teachers and students is optimal. The American Association of Teachers of Mathematics also emphasized in the 80's Action Plan: "Teaching time is very valuable and must be used wisely. >>>More