How to use a parachute? How to do a parachute

We see on TV or in movies those skydivers jumping out of airplanes and then the parachute opens out of their bag and holds the skydiver in the air. Actually, this requires preparation in advance. Before skydiving, skydivers undergo a period of training, and only those who are in the right physical condition can skydive.

The parachute used by everyone should be checked in advance to ensure that the parachute is safe and will not cause fatal problems in an emergency. Before jumping from the plane, make sure the area is suitable for parachuting, there are no large lakes, forests, cliffs or buildings, and the ideal place to skydive is flat grassland.

Once everything is ready, you can experience what it's like to skydive. Jump out of the cabin, unpack your parachute, and enjoy the experience of floating in the air.

A parachute is a soft apparatus that uses air resistance to slow down the descent of a person or object from a certain height. China is the birthplace of the original parachute. According to Sima Qian's "Historical Records", in order to escape from the blazing granary, Shun was in a hurry to become wise, grabbed two hats that shaded the sun, jumped from the top of the warehouse, and landed safely.

It can be seen that as early as about 200 B.C., some people in our country already knew how to use the air resistance of the hat to reduce the landing speed. The first man to actually skydive was the French young Gallerin. On October 22, 1797, Gallerin rose 100 meters into the sky in Paris in a huge hot air balloon.

He cut the tether and let the balloon go. After the basket breaks away from the balloon, it falls sharply towards the ground. The crowd screamed.

Just as people were fearing for his life, suddenly a large white canvas attached to the hanging basket opened like a mushroom, carrying Gallerin to the ground. The first manned parachute in the history of mankind was born.

Nowadays, parachutes have been more and more widely used in athletics, aerospace and other fields.

The tutorial for doing a parachute is as follows:

Preparation: plastic bag, scissors, four yarns of the same length, a small toy (a small piece of clay), adhesive tape.

Step 1: Cut off the two handles and the bottom of the plastic bag and cut it into a square.

Step 2: Tie the four corners with wool (for children who are difficult to tie, use tape to stick the wool ends to the four corners).

Step 3: Align the four yarns and tie the small toy (for children with difficulty in tethering, the four yarns are aligned and wrapped in oil mud).

Let's do it, let's make one and play with it. Then change to a lighter toy (small clay) under the parachute, play with it, and see how the landing speed changes?

Try making a parachute with a larger surface than just now, play around and see how the landing speed changes.

It turns out that the different surface of the umbrella and the different weight of the hanging objects will affect the speed of landing. The larger the parachute, the slower the landing; The lighter the hanging, the slower it will land.

The parachute is easy to make, and playing landing allows us to have one more sport without going out. Let's play!

Knowledge expansion: The parachute is an extendable aerodynamic reducer that uses the principle of air resistance and relies on air movement to inflate the air. A modern parachute is an aviation tool that enables people or objects to safely land from the air to the ground.

It is mainly made of flexible fabrics. It is the combat and training of the Airborne Forces, the life-saving and training of aerospace personnel, the training, competition and performance of parachutists, the airdrop of materials, and the equipment and equipment of the first aircraft.

1. Step 1: Prepare a plastic bag, a pair of scissors, a piece of weighing rope and a bead (or button).

2. Step 2: Cut the red plastic bag into a square.

3. Step 3: Use scissors to cut out a small hole in the four corners of the square plastic.

4. Step 4: Cut out 4 pieces of rope of equal length.

5. Step 5: Fix the rope on the four corners of the red plastic sheet.

6. Step 6: Fix the ropes together and tie the small beads to the tail of the rope.

<>7. Such a simple camel's parachute is ready.

Steps to do a parachute:

1. Prepare a napkin or cut a plastic bag into a square. If you're planning to make a parachute surface out of a napkin, the napkin must be large enough, preferably a dinner size. Kitchen paper towels can also be used to make the surface of a parachute.

2. Stick a piece of tape to each corner of the tissue. The backs of the four corners should also be turned over and taped. Doing so will make the corners stronger, ready for the next steps.

3. Use a punch machine to punch a hole in each corner. Note that the hole can only be hit on the paper towel with adhesive tape, if it is missed, the paper towel is easy to tear.

4. Cut four lines. Each line should be as long as the side length of a square tissue. If the side length of the square is 20 cm, the length of the line should also be 20 cm.

5. Thread the rope through the small hole and tie the knot. Pick up the first thread, thread one end into the hole in the corner of the tissue, and pull it down to tie it with the rest of the thread. The remaining three threads are also threaded into small holes and then knotted.

6. Thread the thread through the buttons. Look for a button with four holes. Thread the other end of each thread into the hole in the button. Tie the four threads under the buttons in a large knot.

7. Throw the parachute into the air. Grab the button and throw the parachute up. If your parents allow it, you can also climb on a chair or table and throw it again. Standing on a higher ground and throwing a parachute will prolong the time it takes for the parachute to land.

How to make a parachute:Prepare the materials: shower cap, four small clips, one large clip, one axis, one pair of scissors.

1. Clamp four small clips in the upper and lower left and right sides of the shower cap brim.

2. Cut two long lines from the spool, and the two lines should be the same length.

3. Clamp the two ends of each line on the two small clips corresponding to the direction.

4. Sandwich the place where the two lines cross in the big clip, and the parachute is ready.

Here's how to make a paper parachute by hand:

Tools: napkins, wool, toy balls.

1. Find a regular napkin. A napkin with a thick orange is the most suitable because it is not easy to tear. But it can't be too thick, too thick and not aerodynamic.

2. Cut four sections of 30 cm long wool. Yarn of moderate thickness works best.

3. Tie the thread to the four corners of the napkin. Pinch the corner of the napkin and tie a knot with the wool. This method is better than punching holes in a napkin, as it is easy to tear the napkin.

4. Tie the other ends of the yarn together. Tie them all together and tie them in a thick knot.

5. Cut a 15 cm piece of wool. Tie this yarn together with the knots of the other four yarns. This yarn is used to tie toys that use parachutes.

6. Tie a toy with this woolen thread. Find a toy that is suitable for using a parachute and tie it with this dangling line. When the toy is firmly tied, it is linked to the parachute.

Be careful to tie it to the middle of the toy so that it is easy to maintain balance.