Traditional Culture Encyclopedia - Photography major - Gases in the air can be used to fill airships.

Gases in the air can be used to fill airships.

The gases used to fill the airship in the air are as follows:

1. Hydrogen: Hydrogen is the lightest gas with a density of only 0.0899 g/L, so it can provide high buoyancy. However, hydrogen is flammable and explosive, so strict safety measures need to be taken.

2. Helium: The density of helium is slightly higher than that of air, but it is still very light, so it can provide good buoyancy. Compared with hydrogen, helium is more stable and safer, so it is widely used as the filling gas of airship.

3. Nitrogen: The density of nitrogen is about 75% of air, which may not be the best choice to keep the shape of airship. But because of its low cost, it may be a feasible choice, especially for small airships.

4. Natural gas: Natural gas is a common gas and can also be used to fill airships. Natural gas has high density and can provide good buoyancy and stability. However, natural gas is flammable and explosive, so strict safety measures need to be taken.

Definition and related knowledge of airship

1, airship is a lighter-than-air aircraft, which has a slender shape, usually with an airbag filled with helium and some auxiliary equipment to control flight.

2. The working principle of airship is to control the flight of airship by adjusting the pressure of gas inside the hull and the shape of wing. Airships usually fly slowly, but they can hover in the air or fly at low speed, which is very useful in some applications, such as aerial photography or surveillance.

3. Airships can be divided into many types, including hard airships, soft airships and hybrid airships. Rigid airships are usually made of metal or synthetic materials, with a solid outer shell and an inner frame supporting airbags. The airship is made of rubber or polyurethane and has no frame support, so it needs less helium to keep buoyancy. Hybrid airship combines the characteristics of hard airship and soft airship.

4. The main applications of airship include military, aerial photography, advertising, entertainment and so on. Militarily, airships can be used for reconnaissance, surveillance and communication relay. In aerial photography, airships can be used to take pictures of the ground and the ocean. In advertising and entertainment, airships can be used for publicity activities, aerial performances and so on.