The flight of the parachute, the principle of flight of the parachute

<>2. The airline stipulates that flammable, explosive, dangerous solutions and other items cannot be carried on the plane, and umbrellas are not dangerous goods and can be brought on the plane.

3. However, the posture of the personal belongings does not exceed 55 cm, and if the chain length of the umbrella exceeds 55 cm, it needs to be consigned.

4. Airlines have strict requirements for carrying items, and the baggage shall not contain dangerous goods, so as to avoid accidents during the flight, affecting the safety of passengers, and at the same time, it is necessary to pay attention not to carry dangerous goods on the plane, which will be directly handed over to the Public Security Bureau for processing after inspection, which is a violation of the law.

Hand over to the flight attendant for safekeeping, and return it to you when you get off the plane.

When the parachute is thrown, the parachute falls down because the object has weight; The opening of the parachute surface increases the air resistance and slows down the descent, which is the basic principle of the parachute. Some simple collations of domestic science books related theories of parachuting: (1) Air resistance:

The upward force of the parachute is the air resistance; The purpose of the parachute design.

In terms of the time it takes to cushion the object to land, the larger the area of the umbrella can produce more air resistance, that is, there is greater air buoyancy. (2) Gravitational attraction: consider parachutes.

The principle that the heavier the gravitational force is, the faster the object falls; It can be known that reducing the weight of the parachute can slow down the fall of the parachute, so the material of the parachute should be lightweight. (3) The shape of the umbrella surface is open: according to fluid mechanics.

The hemispherical shape of the wing surface may produce a relatively large air resistance.

Therefore, in terms of production technology, it is hoped to make a parachute similar to a hemispherical shape. (4) Bai Endeavor Law: Traditional round parachutes (such as:

The appearance of the paratrooper parachute is like an inverted bowl, which is made up of pieces of parachute cloth, and the air is inlet at the lower edge, and the updraft enters the inside of the parachute from the lower opening, and the parachute is propped up by the umbrella-shaped compartment (parachute rib). When the air enters the wing compartment from below, the canopy will bulge to form a semicircle, and when the air passes through, because the outer layer of the wing ribs is long and the lower layer is short; Bai Effort's law says: The flow rate is inversely proportional to the pressure, so the air flow rate of the outer layer of the umbrella is faster, the inner layer of the umbrella is slow, that is, the upper layer of air flow is fast, so the air pressure is small, on the contrary, the lower layer because of the slow air flow rate, so the pressure is relatively large, so it causes a lift force pushed from the bottom to the top, but the design of the single layer of the round umbrella, the outer distance is not much different from the distance of the inner layer, so that the descending force is much greater than the lift, so the law of the Bo effort is manifested in the traditional circular parachute may not be obvious. Reference.

The structure of the parachute is: flying (single structure) umbrella (upper and lower structure).

The structure of the parachute is: flying (single structure) umbrella (upper and lower structure). Zhuyin is: Pinyin is: fēisǎn.

What is the specific explanation of parachuting, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

High canopy.

2. Citations and Explanations.

High canopy. Quoting Song Anonymous's "Persona General Record" Volume 2: "Jingzhao Wei Andao came out early, and in the mercy and benevolence, there were soldiers like the emperor's guard, there was a flying umbrella, and the lower was like the ornament of a jade girl." ”

3. Network Explanation.

The flying parachute, pronounced fēisǎn, is the lightest flying instrument of modern human beings, which can be divided into Wukai nuclear model powered parachute and powered parachute.

Idioms about parachutes.

The sky is full of flying and flying and collecting grains, collecting flags, rolling umbrellas, flying and sweeping Su Ruozhang, fire umbrellas, high Zhang Feihong, stepping on snow, flying and flying in the snow, flying snow claws, flying yellow Tengda, flying sand and raising gravel.

Words about parachuting.

If you open an umbrella, fly to the snow claws, fly to save grain, send an umbrella after the rain, fly the sand, raise gravel, fly to save the umbrella, collect the flag, roll the umbrella, fly all over the sky, and stare at the fire umbrella.

Flying is the most instinctive human desire.

Whether it's as a mode of transportation or a hobby.

Life in flight is influencing us more and more.

Make the shuttle on the cloud more poetic.

And learn to fly.

It will be a new feast in life.

Paragliding is an extreme sport that originated in the Swiss Alps in the 80s of the last century.

It is by far the most bird-like outdoor sport.

In recent years, paragliding has become highly popular all over the world, with more than 3 million people participating in the sport in Europe alone.

Paragliding experience flight is controlled by professional flight instructors, and is a very popular way to experience air leisure all over the world.

Enjoy one-on-one service, where the instructor will lead passengers through the air to explore natural landscapes and experience the joy of flying.

Paragliding has become one of the most popular aerial experiences around the world.

Paragliding flight is slow, soft, quiet and graceful in the air, there is no feeling of free fall, with the right operation, take-off and landing feel as easy as going up and down stairs. In the international paraglider design, production and sales have strict certification, testing and channels, the international general implementation of the European EN standard or German DHV standard, each paraglider must be qualified by professional flight test before leaving the factory, and sign the name before selling. As long as you can master the correct flying method and face nature with reverence and humility, paragliding is safe.

It depends on whether the length of the umbrella is more than 55cm, and it can be carried with you if it is not exceeded, and it can be checked in if it is exceeded.

According to the relevant regulations of civil aviation, the items that can be carried by air passengers are as follows:

Unchecked baggage should be large enough to fit under the seat in front of the passenger or in an enclosed bin.

1. The weight of free carry-on items is limited to 10 kg per first-class and business-class passengers, and 5 kg per economy-class passenger.

2. Passengers holding first-class and business-class tickets are allowed to carry two items per person. Passengers holding economy class tickets are only allowed to carry one item per person. The length, width and height of each carry-on item shall not exceed 55cm, 40cm and 20cm respectively.

Umbrellas are not prohibited items, but also meet the requirements for carry-on luggage, if the length of the umbrella does not exceed 55cm, you can carry it with you, and you can check it in if you exceed it.

As long as it does not exceed the regulations, it can be bringed.

In accordance with the Regulations for the Carriage of Passenger Baggage by Civil Aviation of China:

The weight of each piece of checked baggage shall not exceed 50 kg, and the volume shall not exceed 40 * 60 * 100 cm. The weight of self-care baggage shall not exceed 10 kg, and the volume shall not exceed 20*40*55 cm per piece. The weight of carry-on items is limited to 5 kg per passenger.

Passengers holding first-class tickets are allowed to carry two items per person. The volume of each carry-on item must not exceed 20*40*55 cm.

If it is metal, it must not be held, and it must be checked in.

Today I bring a question about whether you can bring a long-handled umbrella on a plane. Some travelers tend to be confused by this question. So, what's the answer?

First of all, we need to understand the relevant regulations of the airline. According to the regulations of the Civil Aviation Administration of China, passengers are not allowed to carry sharp and blunt objects on board the aircraft that are likely to endanger aviation safety. The tip of a long-handled umbrella may be considered a sharp object and is not allowed to be carried.

However, different airlines have different rules for long-handled umbrellas. Some delayed airlines allow passengers to bring a long-handled umbrella on board, but they need to put the handle away in the suitcase. Some airlines do not allow umbrellas to be carried on board at all.

Also, if you're traveling to an area where the rainy season is more pronounced, consider buying a portable umbrella there. Not only will you not be denied boarding for carrying an umbrella, but it will also make it easier to use during your trip.

It's not the same thing. A parachute is a bit like a modern, maneuverable gliding parachute, but it differs from a parachute in a few important ways:

1) Structure: The paraglider is a take-off and landing device, so there is no drouge or glider, and its construction is lighter (because it does not need to bear the momentum of a sudden opening during a high-speed landing). The paraglider has more air chambers and thinner lines.

2) Take-off method: The parachute must take off against the wind on a hillside with a drop in the air, and by running forward and the speed of the wind, the lift force that lifts the wings upwards will bring people off the ground. Skydiving, on the other hand, must have an aviation vehicle, such as:

Airplanes, hot air balloons, etc.

3) Parachute opening procedure: Before taking off, the parachute has been opened and laid on the ground. Skydiving is a free-fall (or immediate) pull-out of the bag after jumping off the vehicle.

4) Flight performance: the paraglider can circle, glide, climb, cross-country, and stay in the air. The high-altitude parachute can only be lowered.

5) Appearance: The wingspan of the parachute is long, and the shape is close to that of a fusiform. The parachute is rectangular in shape, with a small guide wing on top of it, and a square shock-absorbing cloth above the skydiver's head to reduce vibration when the wings are open. 7

It's close, but it's not the same thing.

The parachute pays more attention to the controllable time in the air, and the parachute pays more attention to safety and ease of operation.

Most parachutes are rectangular, and parachutes are mostly round.

Of course, the landing of personnel can be guaranteed, but the shape is different, the parachute is rectangular, can control the landing location, the control direction is convenient, but the requirements for the use of personnel are high, and there is a certain risk, and the ordinary parachute is circular, the control requirements are not high, the general large-scale airborne personnel equipment is a circular parachute, the accident rate is low, but the direction control is not so good.

Parachutes have no flight characteristics, are cheap to build, and are equipped in large quantities.

The paraglider is a parachute with a wing-shaped structure, which has a certain air mobility capability and can be equipped with special troops, which is convenient for the rapid assembly of troops when it is actually used.

Paramotor is a flight device between a light aircraft and a parachute on the basis of a paraglider and a light propulsion device. Compared with paragliding, it has a longer stay time in the air; Compared with airplanes, it has the characteristics of small structure and easy to carry.

I don't know which one you are talking about.