Can't civil aviation skydive?

Can't civil aviation skydive? First, the vast majority of civil aviation accidents (! It is during take-off and landing that skydiving is impossible.

Most air crashes occur when the crew and passengers are unprepared. When an accident happens, the time is very short, often only 1 ~ 2 seconds, and there is no time to prepare for any parachute at all. Moreover, aircraft are most prone to accidents when taking off and landing. At this altitude, even parachutes are difficult to function.

Second, the plane is flying at high altitude and high speed, which is different from ordinary skydiving and low-altitude take-off. Even if there is an accident, it is impossible to open the hatch and skydive.

Now almost all civil aircraft use sealed compression chamber. When an airplane flies, the engine room is isolated from the outside atmosphere, and the atmospheric pressure in the engine room is greater than that of the air around the airplane. Therefore, after the plane took off, the door of the engine room could not be opened, and it was impossible to parachute through the hatch to escape.

Third, the flight altitude of civil aviation aircraft is much higher than that of skydiving, and the air is thin and extremely low. When the parachutist descended to the survival height (4000m), he had become a hard corpse. Even if the plane ventured down to the low altitude, the strong relative airflow with a speed of about 400 kilometers per hour would blow the paratrooper to the tail wing and kill him, so most paratroopers opened the door with the tail wing. What's more, an untrained person parachutes, which is similar to jumping off a building when grounded.

Fourth, the safety factor of civil aviation itself is very high. Even if there is danger, it will not necessarily fall. Skydiving is no safer than waiting for the crew to deal with the accident in the plane. Comparatively speaking, skydiving is more dangerous.

It is not unsafe for civil aircraft to have no parachute device, because the remaining life-saving devices are still relatively perfect. Generally speaking, a passenger plane has two or even three or four engines, and even if only one engine works, it can maintain flight. Once the plane needs to make a temporary emergency landing on the ground or water outside the airport, there are emergency exits for passengers to leave the plane quickly, as well as automatic slides, life jackets and lifeboats. When flying, if the seal fails, there will be an oxygen mask on each seat for passengers to breathe urgently.

But now countries are also studying the whole plane parachute, hoping to make the plane safer.

5. Not everyone can master skydiving technology;

Civil aviation aircraft do not use parachutes for emergency because paratroopers have to undergo special technical training, and it is difficult for untrained people to master this professional technology. When the plane crashes due to an inevitable accident, even if people on the plane can get off the plane with the help of special devices such as ejection chairs, they still have to bear the powerful impact of opening the umbrella at a falling speed of 60 meters per second, which is beyond the capacity of passengers of different ages and physical qualities. In addition, after getting off the plane, you should be able to spread the umbrella nimbly, manipulate the umbrella rope flexibly, and have the skills of landing accurately and taking off the umbrella quickly after landing, which are not what ordinary passengers can do.

One more thing, because if every passenger is equipped with a parachute, it will greatly increase the weight of the plane, and it will take up a lot of space, which will greatly affect the running ability of the plane.

The above are quotations.

At present, the flying height of most civil airliners is too high. Think about it. Even if you jump out at 30,000 feet, you will be blown to death (airflow) or freeze to death (the temperature is too low). If they don't freeze to death, they will be scared to death or suffocated (oxygen is thin). If you don't die, you will be killed (landing posture).

Can civil aviation design skydiving? Yes, but it's not necessary.

1. The safety of modern civil airliners has reached a very high level. Although parachutes can save lives, they are a very low-level escape tool.

Considering the safety of the plane, all passengers need to install it. If you need to skydive, you need a unified schedule and spend a lot of time. However, when the plane encounters an emergency, time is so precious that it may be neglected at all. This timetable requires the joint efforts of pilots and flight attendants to come up with a reasonable order. Not every emergency can use the same order (because different orders will lead to different changes in the center of gravity), which is very time-consuming and laborious, but in an emergency,

3. It is not advisable from the economic point of view. Adding a reasonable skydiving device to each seat or everyone will inevitably increase the design cost and operation cost of the aircraft. The most convenient place to take it is either overhead or under the seat. No matter how the general umbrella is compressed, it will eventually be bigger, so the plane needs to be rearranged, the design cost will increase, the operator will not necessarily pay for the general umbrella weight, and the fuel consumption of the aircraft equipped with the umbrella will inevitably increase.

Why can't civil aviation planes skydive? The height of civil aviation aircraft is generally very high, and opening the hatch in the air will have an explosion-like effect. Even if the cabin door is opened after the height of the plane is reduced, it is easy to be hit by the wing or horizontal stabilizer, and the survival rate is worrying. In addition, the accident that civil aircraft need emergency escape is generally that the aircraft is difficult to control, and it is extremely difficult for passengers to parachute when the aircraft keeps rolling. Therefore, it is of little significance to equip civil aircraft with parachutes.

Are there parachutes when civil aviation opportunities are in danger? No parachute

Parachute is an important tool to ensure the pilot's life safety when the plane falls. Do you know that every passenger on our daily civil aviation plane is equipped with a parachute? Can everyone skydive when there is danger at high altitude? In fact, there is no parachute on a civil aviation plane, which can be explained from several aspects.

From the professional point of view of skydiving, skydiving requires high professional skills, and every skydiver will receive strict training before skydiving, which cannot be learned in one day. The parachutist must complete the disembarkation in a short time, skillfully open and flexibly manipulate the parachute rope, and quickly get out of the parachute after landing accurately and standard. As ordinary passengers, we usually have no chance to touch parachutes, how can we talk about receiving professional training? This is a technical action that untrained passengers can't complete in an instant. Even if parachutes are prepared for the passengers on the plane, in the event of such an accident, the time for the plane to crash may only be tens of seconds, and it is unimaginable for hundreds of panicked passengers to queue up and jump out of the cabin. In terms of cost, it is impossible for the air transport department to skydive for several hours or even dozens of passengers in Sun City Entertainment City.

Why can't pilots who fly civil aviation planes skydive? Skydiving is a professional skill and requires special training. If the plane really has an irreparable flight accident in the air, the passengers on the plane must complete the process of ejecting the seat and leaving the fuselage in a very short time, and train to open and flexibly manipulate the parachute rope, and quickly get out of the parachute after landing accurately and standard. This is a series of technical actions that an untrained passenger can't complete in an instant. It is also impossible for the air transport department to parachute each of them for several hours or even dozens of passengers left on the plane.

So it's unsafe for a civil airliner to have no emergency parachute? The answer is no, modern large passenger planes (such as Boeing, McDonnell Douglas and Airbus) all have two or more engines. Even if only one engine works normally, the pilot can still maintain the lowest safety level when operating correctly, and there is really an emergency on the passenger plane. When there is an irreparable flight accident, there is no emergency exit for passengers on the passenger plane, and it is equipped with an emergency automatic inflatable slide and life jacket. These are all means to escape from the plane under the guidance of the crew after the plane makes an emergency landing.

In addition, after the compromise in the cabin, the air is thin, and passengers will feel breathless and have difficulty breathing. At this time, the oxygen level above each passenger will automatically drop, and the passengers can return to normal after breathing. Life jackets are located under each passenger's seat.

It is assumed that aircraft accidents exceed 1W meters (most accidents). Even with a parachute, everyone knows what happens when people get out of the hatch.

Even if the plane has an accident, it will still fly, otherwise it will descend with acceleration.

Anyone with common sense knows that people can adapt to these two speeds?

It is conceivable that if I give you a parachute, what can I do?

Most accidents will not happen at an altitude of 10,000 meters, but parachutes are not suitable for ultra-low altitude (1000 m or lower) when taking off and landing. You see, airborne soldiers usually parachute at an altitude of 1000 meters. It seems that only the US military has used ultra-low altitude skydiving (invasion of grenada, altitude 150m) in actual combat, which is called madness by the world. ...

There are two major problems in ultra-low altitude skydiving. One is people's reaction, that is, whether the parachute can be opened in time, and the other is whether the parachute can quickly generate lift equivalent to people's impulse in such a short time ... So even if the parachute is successfully opened, the probability of injury after landing is very high.

It shows that skydiving on an airplane is not like skydiving on a platform such as a tall building.

If every passenger is equipped with a parachute, it will greatly increase the weight of the aircraft, occupy a lot of aircraft space, and greatly affect the combat capability of the aircraft; In addition, not every passenger can master skydiving technology; The most important thing is that the plane flies at high altitude and high speed, which is different from ordinary skydiving and low-altitude vertical flight. Even if there is an accident, it is impossible to open the hatch and skydive.

You don't have time to prepare for skydiving during the takeoff/landing phase of the plane. . .

Opening the hatch at high altitude is not a problem, but please think about the cruising altitude (usually 7800M- 12000M) and atmospheric pressure-the plane will be like an eggshell-bang.

Furthermore, considering oxygen, it usually takes only 16 seconds for a person to wake up and lose his sense of meaning under such conditions (the specific figure has been forgotten, and it will not exceed 16 seconds). I wonder if a skydiver has the ability to complete skydiving? ...

Unless you refit the ejection seat of a Russian fighter plane and install a pressurization/decompression sealing system on each passenger seat ... then consider opening a movable skylight on each passenger's head and popping it up like a fighter plane in case of danger, and then you will see 100 more smallpox floating in the sky. ...

Why don't civil aviation planes have parachuting escape systems? There are no parachutes on civil aviation planes.

1. If the psychological quality of passengers is not high, it is easy to cause panic. If there is a parachute, maybe some small airflow will cause the plane to tremble and the passengers will jump down.

2. Passengers who haven't received parachuting training will die if they can't grasp the time and landing point of opening the umbrella.

The captain didn't have a parachute either, because he parachuted when the accident happened. . . What about the people on the plane?

Why do civil aviation prefer to crash rather than let passengers skydive? Professional training is needed, and most people do not have the conditions for skydiving. The flight altitude of civil aviation aircraft is generally10000m, which belongs to anoxia, low pressure and low temperature. If a person parachutes, he will lose his life in an instant, and there is no need for civil aviation planes to parachute to escape.