What is the role of aviation life jackets in the principle of aircraft life jacket?

What is the principle of aircraft life jacket

life jackets are generally divided into two types: inflatable life jackets and foam -type life jackets.

1. Foam -type life jacket refers to the fabric made of nylon or dendrome rubber. It is filled with buoyancy materials such as foam boards in the middle. It has enough buoyancy to wear on the body so that the head of the water drop can expose the water.Generally, what we use belongs to the sea life jacket.It uses EVA foaming material inside, which has been compressed by 3D three -dimensional forming. Its thickness is about 4 cm (domestic products are 5-6 thin hair materials, which is about 5-7 cm thick).The life jackets produced according to the standard specifications have its buoyancy standards: Generally, it is 7.5 kg/24 hours, and children are 5 kg/24 hours, so as to ensure that the surface of the chest is paid above the chest.

2. The inflatable life jacket is divided into two types: automatic inflatable life jacket and manual inflatable life jacket. This kind of life jacket is made of high -intensity Waterproof material. The inflatable life jacket is mainly sealing inflatable vest airbags, micro -pressure gas cylinders and fast -moving air cylinders and fast.The composition of the inflatable valve is often used in the possibility of falling into the water.

Under normal circumstances (not inflatable), the entire inflatable life jacket is Hanging on the back of the shoulder like a strap. Because the volume is small, it does not hinder people's homework.At all times, or automatically expand and inflatable (automatic inflatable life jacket) according to the action of water, or by pulling a cable (manual inflatable life jacket) on the man-charged air valve, it can be inflated into 8-15 kg of buoyancy within 5 seconds.Safe clothes; life jackets hold up the human body upward, so that the head and shoulders are exposed to the surface, so as to obtain safety protection in time.

This kind of life jacket is made of water -resistant and breathable materials on the surface. In addition to paying attention to its buoyancy when choosing, it should also be noted that sharp objects can be avoided or worn through the waterproof layer.Inflatable life jackets should check if they are leaking before use.

What are the use of aviation life jackets

Many friends may think that the plane is safe. If there is an accident, there is no parachute effect. In fact, once an accident occurs, it is completely unrealistic for passengers to escape from parachute.

1. Civil aircraft is not the same as fighters. The engine is next to the cabin door. After parachuting, it is easy to get rolled into the engine, so it is more dangerous to say.

2. The skydiving looks very simple, but in fact, even professional paratroopers have to be trained for 3 months before parachuting. Passengers who have not trained have a greater risk of parachute.

3. Therefore, compared with parachutes, life jackets are more practical. In addition, even if the plane encounters an accident, it can be controlled. The pilot can still control the emergency landing of the plane. The forced landing may land in the lake., River and the sea, at this time, life jackets can play a role.

4. Aviation life jackets also have a certain warmth function. After the cold, the weather can also provide passengers with a temporary cold protection effect.

5. The color of the life jacket is bright, and the rescue personnel can be reminded from a long distance during rescue.

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