Why in planes there are no parachutes for the passengers?

Everyone who has ever enjoyed air travel, you probably asked yourself the question of why the passengers are not issued parachutes. Agree, pretty strange that before the flight attendant is obligatory briefing on safety rules during the flight, tells how to use an oxygen mask where it is and how to get it. In addition, you will be told where the life vest and how to wear it. But no one will mention how to properly wear a parachute and where the emergency exit. How so? Why passenger planes there are no parachutes? The life jackets are, and no parachute!

The Parachute on the plane too much?

First of all, it is considered that the passenger plane — machine heavy-duty and extremely reliable. According to statistics, the crash of air transport occurs only in 1 in 20 million flights, while a car accident has a score of 1 to 9200. This is one of the main answers to the question about why the planes no parachutes for passengers. In addition, there is a sufficient number of more specific and reasoned objections. The reason for this are several, and they, of course, clear to those who ever jumped with a parachute or theoretically familiar with the mechanics of the process.

The First reason why planes do not have parachutes for passengers

According to statistics, more than 60% of air crashes, occurs during landing, takeoff or climb-out — that is, at low altitudes, when the parachute generally useless — it just doesn't have time to open up, and you “plop” the ground together with the saving backpack. “But the remaining 40% of crashes in the air, — you might say. — So why not give the parachutes in the planes? After all, it could save at least some lives”. Here comes into action the other arguments.

The second Reason

Tell me honestly, how many times in life you have worn a parachute? Most likely, most of the answers — never. This is another reason — why in planes there are no parachutes. The fact that the average passenger is just fail from the first or even the second time to correctly wear and fasten the parachute, especially under conditions of panic and nervousness. And if this statement is true for healthy people, strong physically and mentally, to say nothing about children, pensioners, the disabled or just the passengers, easily panic? To develop such a “gimmick” for them a priori.

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The Third argument: why the planes no parachutes

Even if we assume that the plane will not fly as long as the passenger does not learn how to properly use a parachute, for example, to sell tickets will be only those who passed the special courses would have to substantially alter the design of many aircraft.

The fact that jumping out of a plane only from its rear, the rear. Otherwise, you run the risk of “shmyaknut” on the wing or get into the engines, where the man immediately twisted in small “noodles”. The construction of the same the vast majority of aircraft provides for a fairly narrow aisles and lack of doors for immediate evacuation of a large number of passengers. This is another reason why the planes no parachutes. It is easy to imagine what the crush will start in the cabin of a crashing aircraft. In addition, the plane drops rapidly, and the vast majority of passengers just don't have time to get to the exits.

Fourth argument

Still, let's assume that the parachute you wear can, and at the emergency exit was the first. Now you're saved, right? No, it is not so simple, and here we come to the main argument in the question of why the aircraft are not issued parachutes. The fact that “cruiser” the speed of the aircraft at flight level, i.e. at a height where he flies in normal mode, 800–900 km/h and the maximum speed that is able to withstand a skydiver without a special suit or chairs is 400–500 km/h. simply put, you simply ‘smear" of the air flow but that's not all...

Fifth argument

One of the main reasons why passenger planes no parachutes, is the altitude.

Maximum altitude at which a person can breathe without the use of means of restraint in the form of, for example, oxygen tanks, is 4 thousand km, the height of the flight echelon is 8–10 thousand kilometers. This means that even if you manage to safely jump out of a falling plane, then breathing is almost nothing, of course, if you prudently didn't bring an oxygen tank.

Another reason why the planes no parachutes, is the outside temperature. At the height where you would normally fly passenger planes, the air temperature at any time of year is minus 50-60C, and this implies that the people trapped there without special means of protection, in a matter of seconds froze his everything, if notwill freeze to death.

The sixth

Another reason why airplanes are not issued parachutes, is that during the flight the cabin, as you know tight. At the height where the flying passenger liners, because of the pressure difference inside and outside to open the door of the plane almost impossible. However, suppose the accident depressurization — if this happened at the height of 10 thousand km, all passengers will lose consciousness or even die for 30 seconds. It is unlikely that during the negligible time someone will have time to wear an oxygen mask, a parachute and get to the exit.

But even if we assume that you have unrealistically strong guardian angel and all of the above reasons you are not touched, imagine that you are waiting for: taiga, desert, icy vastness of the ocean, or simply the backyard of some tractor plant. Simply put, the chance that you land, wow is not broken, and in the place where you can quickly find people who are able to provide first aid, is negligible. So the use of parachutes in passenger planes is just unreasonable.

How much will this tiny chance

However, a particularly resistant aerophoba still not cease to wonder, ‘Why not give parachutes in passenger planes?”.

With the technical side of the process, we have a bit figured out, now let's talk about the economic component. Assume that the whole world is imbued with the habit of hope for “maybe”, and all the planes were equipped with parachutes. Consider:

• Each parachute weighs about 5 to 15 kg, depending on model and weight that he can lift. This means that the aircraft can take on Board for 15–20% less passengers — instead they fly parachutes. The cash equivalent of most interest will be redistributed in the price of remaining tickets, the company can't give its profits.
• In addition, tickets will be laid and the cost of parachutes and, more specifically, their rent. This is due to the fact that their first and foremost need to purchase and periodically change (parachutes also have an expiration date).
• The Next line costs — that the inspection and laying. Before each flight would have to check the suitability and serviceability of each chute, moreover, many models require replacing the case even when did not use them (once a month or six months). To do this, airlines will have to keep a staff of maintenance personnel whose salary will also be incorporated in the ticket price.

Thus, the price of the ticket on a regular flight takes off so that, most likely, there are few willing to buy. Well, you see, who wants to fly from Moscow, for example, in Simferopol for 100–150 thousand.

What about the ejection system?

So, why not issue parachutes in passenger planes, we seem to understand, but it can also be equipped with ejection system, each seat like in the fighter. Or not? Let's deal.

Recovery System installed in the fighter, represent a rescue complex, consisting of chairs, oxygen and parachute systems and special mechanism to protect the pilot from incoming air flow. This whole set together weighs approximately 500 kg. Thus, if the TU-154 can carry 180 passengers, with the use of the ejection system, their number will shrink to about 15. Imagine how much a ticket will cost, because the amount of kerosene that "eats" of the plane. not depends on the quality of the goods — in other words, the aircraft would catapult it carries or people.

In addition to the advantage of the ejection system, passengers would have all the flight to be in special suits, helmets, tight strapped to a chair — not a pleasant prospect. And then, each chair should submit a separate sealed capsule, otherwise the “hunting” one of the chairs, all the rest were damaged by the explosion of the squib. In short, you would have to construct a brand new vehicle, able to provide all of the above conditions.