Airship is a kind of lighter than air aircraft. The biggest difference between airship and hot air balloon is that it has the device to propel and control the flight state. The airship is composed of a large streamlined hull, a pod under the hull, a stern for stability control and a propulsion device.

The air bag of the hull is filled with buoyant gas (hydrogen or helium) which is less dense than air, so as to generate buoyancy and lift the airship. The pods are for people to ride and load cargo. The tail surface is used to control and maintain the stability of course and pitch. Large civil airships can also be used for transportation, entertainment, disaster relief, film and television shooting, scientific experiments and so on. For example, in the event of a natural disaster, if the communication is interrupted, a buoy can be quickly launched. By carrying the communication transponder through the buoy, the mobile communication recovery of the whole disaster area can be completed in a very short time.

Source: @absheroriginal

Biplane is an aircraft with two wings arranged side by side. Its upper and lower wings are connected into a load-bearing whole by pillars and cables to form a space truss structure. The aircraft with two wings in front and back configuration is called tandem wing aircraft. In the early stage of aircraft development, the engine power was low and the weight was large, and the materials used to build the airframe were mostly wood and Mongolian cloth. In order to solve the problem of lift off, a large wing area is needed to generate enough lift at low speed. The biplane has two wings, and the total wing area is large. In modern aircraft, except for the small aircraft with special requirements for payload and low speed performance, biplane is rare.

An aircraft with two wings arranged side by side. The aircraft with two wings in front and back configuration is called tandem wing aircraft. The upper and lower wings of the biplane are connected with struts and cables to form a load-bearing whole, forming a space truss structure. Biplane is an old style aircraft. In the early stage of aircraft development, the engine power was low and the weight was large, and the materials used to build the airframe were mostly wood and Mongolian cloth. In order to solve the problem of lift off, a large wing area is needed to generate enough lift at low speed. The biplane has two wings, and the total wing area is large.

Source: @_tattoobar_

Wrist tattoos often give people a fresh feeling, especially in summer, showing the wrist, full of fashion! For many young people, wrist tattoo is undoubtedly a very good choice. I’ll take you to choose your exclusive little fresh wrist tattoo!

Whether it’s text, small patterns or geometric lines, you can find a suitable couple tattoo. The little fresh couple tattoo on the wrist is the best witness of love. Small part of the wrist tattoo is more exquisite, whether you choose wrist tattoo or not, I would like to remind you that the size and location of wrist tattoo is very important, to ensure that the design is accurate and fine.

Source: @11____13

There are several different options for the location of the thigh tattoo. Today’s most popular is the sexy thigh tattoo design, from the top of the hip to the middle of the outer thigh. Women can also get tattoos on their lower thighs, as well as on the front, back and sides.

Many women love thigh tattoos, because this part will reflect the sexy of women. It can show you a beautiful tattoo. If you want to relieve the pain, then I suggest you tattoo on the outside of the thigh, because it’s less painful than the inside of the thigh. Your tattoo artist will also advise you to reduce the pain.

Source: @anna_bravo_

Runes is a kind of extinct letters, which is used to form the language of Rune and to write some Nordic Germanic languages in medieval Europe, especially in Scandinavia and the British Isles. The rune used in Scandinavia is called futhork, and the rune used in Britain is called Futhorc, which has a strong religious flavor.

In Nordic mythology, Odin, the father of the gods, in order to get the fountain of wisdom, he lost one right eye in exchange for the wisdom of Lu en. Runes is a kind of mantra. If you engrave it on wood, stone, metal or any other material, you can get infinite power. In order to seek higher wisdom, Odin hung himself on a tree for nine days and nine nights, thinking about the mysteries of the universe.

Source: @_adamhill_