The principle of homemade simple small parachute 5

Prepare materials: plastic sheeting, pens, scissors, cotton rope.

Production steps: 1. Draw a hexagon on the plastic cloth and cut it out.

2. The six corners are tied with cotton ropes, and the end of the tip of the needle or scissors can be pierced in the plastic sheeting.

3. Tie the other end of the cotton rope to a small heavy object.

4. The production of a parachute toy was completed.

5. It can also be reused, and it can be rolled up and put away when not in use.

Difficulty:

Experimental method: The materials required for this experiment are: handkerchief, 4 ropes (20-25 cm), and heavy objects (medium-sized aluminum pendants, etc.).

Tie a rope to the 4 corners and hang a weight on the rope. Fold the umbrella to reduce air resistance.

Tie the rope to the 4 corners of the handkerchief. Grab the handkerchief from the center and pull the 4 ropes together, they should be the same length. Tie the 4 ends of the rope to the weight and tie a knot.

Fold the handkerchief from the top to the end of the weight, and wrap the rope around the rolled handkerchief so that the open umbrella is subjected to greater air resistance.

In this way, the handkerchief becomes a small bag, which is thrown upwards into the air. The packet thrown upwards begins to fall when it reaches its apex, at which point the parachute opens and the object slowly lands on the ground.

When the packet is thrown upwards, there is very little air resistance. When the parachute opens, the air resistance suddenly increases and the descent slows down.

Extended knowledge: This experiment shows that air resistance is related to the surface area of an object, and that the larger the surface area of an object, the greater the resistance it will experience.

Take the plastic tape and cut it into shape, and then use a needle to lead the wire to the plastic to make each thread into a square row. After that, attach the wire to one point (longer but not too long) and tie it to a suitable weight.

The process of making an improvised parachute is as follows:

1 Prepare a plastic bag, rope, scissors, buckles.

2 Cut the plastic bag into a square.

3 Cut the rope into 4 equal lengths.

4 Fold the square plastic paper in half twice along the midline and use scissors to cut a small hole in the corner.

5 Attach the four lengths of rope to the four corners of the square plastic sheet.

6 Attach 4 ropes to a clasp so that a simple parachute is ready.

The second method of production:

1 Prepare a napkin or cut a plastic bag into a square. If you're planning to make a parachute 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 Attach 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. If you don't have a punch, you can also cut a small hole in each corner.

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 threads 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. You can also tie the thread to paper clips, charms, or small spacers.

8 Throw your 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 the parachute of fame can prolong the time it takes for the parachute to land.

9 If you want to use a small toy as a heavy mascot, put the rope trap you just tied under the armpit of the toy figure.

The first step is to prepare a plastic bag, rope, scissors, and buckles.

The second step is to cut the plastic bag into a square.

The third step is to cut the rope into 4 sections of equal length.

Step 4: Fold the square plastic paper twice along the midline and use scissors to cut a small hole in the corner.

The fifth step is to fix the 4 sections of rope on the four corners of the square plastic paper.

The sixth step is to fix the 4 ropes on a buckle, so that a simple parachute is ready.

The seventh step, the final effect hall answer is shown in the figure below.

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.

Step 1: First of all, prepare the plastic packaging bag, rope, scissors, and buckles, as shown in the figure below.

Step 2: Then cut the plastic packaging bag into a square, as shown in the figure below.

Step 3: Then continue to cut the rope into 4 sections of equal length, as shown in the figure below.

Step 4, fold the square plastic paper twice along the middle line, and cut a small hole in the corner with scissors, as shown in the figure below.

Step 5, then fix the 4 sections of rope on the four corners of the square plastic paper, as shown in the figure below.

Step 6, finally fix the 4 ropes on a buckle, and the homemade parachute here is ready, as shown in the figure below.

Extension of knowledge: parachute is the use of air resistance, so that people or things from the air slowly down a kind of apparatus, it is from the acrobatic performance began to develop, with the development of the aviation industry, later used as air life-saving, and then used for airborne operations, like gunpowder, parachute is also from China.

Steps to make a parachute:

Find a regular napkin. A thickened napkin is best suited because it won't tear easily. But it can't be too thick, too thick and not aerodynamic.

Cut four pieces of wool with a length of 30 cm each and a moderate thickness.

Tie the four yarns to the four corners of the napkin. Pinch the corner of the napkin and tie a knot with the wool.

Tie the other ends of all four yarns together and tie a thick knot.

Cut a 15 cm piece of wool. Tie one end of this yarn together with a knot tied with the other four yarns.

Tie a small toy to the other end of this yarn. 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.

Try your new parachute. Balance it in the palm of your hand and throw it hard into the air, how does it perform? Your parachute and toys will land safely on the ground.