A rocket is an aircraft which is propelled forward by the reaction force produced by the working medium of rocket engine. It carries all propellants and does not rely on the external working medium to generate thrust. It can fly in the dense atmosphere or outside the dense atmosphere. It is a vehicle for space flight.

The rocket includes the structure of the rocket body, the power plant, the stable tail and so on. Most sounding rockets are single-stage or two-stage, and some are 3-stage or 4-stage. Solid rocket motor is usually used for power plant, which can simplify and shorten the launching operation time.

The requirements of attitude and trajectory of sounding rocket are not as strict as that of missile and launch vehicle. Generally, there is no control system, and flight stability is ensured only by stabilizing the tail or rotating the rocket around the longitudinal axis. Set up the control system only when precise positioning and orientation are required.

Source: @_osobliwie_

Anubis, the God of death in ancient Egyptian mythology, appeared in the murals of the Pharaonic as a wolf head. He is the son of Seth, one of the nine pillars of Egypt, and neftis, the funerary goddess. In some mythological versions, he is also called the son of neftis and Osiris, the God of abundance. Anubis’s life story has long been controversial for reference only.

For the ancient Egyptians, the afterlife was extremely important, so anubis was worshipped long ago. People prayed to it to protect the dead. It also helped Isis mummy Osiris and give Osiris the throne of Hades.

Anubis is associated with the making of mummies and is the guardian of the dead on their journey to the afterlife world. He is usually described as a male with a wolf’s head, but he is also described as a weasel in a ribbon, with its forearms bent and flail.

Source: @classictattoomahon

Ganesha, is the God of wisdom and obstacle breaking in Hinduism and Indian mythology. He was the spiritual son of Shiva and Parvati. The elephant head God believed widely. In Tibetan Buddhism, it is called the God of self, joy, and holy, which is the guardian God; in Japan, it is regarded as the God of husband and wife’s perfection and wealth; in Thailand, he is called “elephant head God of wealth”; in Hinduism, he is the God of obstacle removal, wealth, destiny, knowledge, wisdom, auspiciousness and success, and is the most popular God in India. Its image is an elephant head with a big belly, one tooth, axe, candy, Rosary and lotus. Mount for a mouse.

Ganesha combines the wisdom of man and elephant, especially the Shiva sect and Vishnu sect in Hinduism. It is also called “group leader” because it controls a group of small gods who are good at making troubles. Its shape is a human body, elephant head, and an ivory; it is kind and kind-hearted, but brave and firm in the war. Its unique signs are elephant hook and rosary. Tirak, the leader of the radical group of Indian nationalist movement, used the sacrifice of the God of the head to launch a campaign against British colonialism, making the elephant head God a symbol of the national God.

Source: @alechandare

Superman is the superhero of DC Comics. It is the first superhero in the history of American comics. It was created by Jerry Siegel and Joe shuste. Superman was born in krypton, formerly known as Kal el. In the face of krypton’s destruction, his parents sent Carl, still in his infancy, to earth in a spaceship. The spaceship crashed in Smallville, Kansas, USA. Carl was discovered by the farmers Kent and raised under the name of Clark Kent.

As an adult, Clark came to metropolis to become a reporter for the daily planet. He was born with super ability and strong sense of justice and compassion. Every time he was in danger, he dressed in blue tights and red cloak, incarnated as Superman, fighting for justice and saving the world.

Source: @_trujilloe

Tank is one of the main weapons in modern land combat. The tracked armored combat vehicle with direct fire, cross-country capability and armored protection is the only one of the land weapons that is more important than wheeled armored vehicle. It is mainly used to fight against the other tank or other armored vehicles, and can also suppress and eliminate anti tank weapons, destroy fortifications and annihilate enemy land forces.

In fact, tanks are also land weapons with the most natural enemies. Even some tank manufacturers also develop anti tank weapons. Anti tank has become an important capability of the army of all countries. Although the tank is developing, the development speed of the tank itself can not catch up with the development speed of the anti tank weapon, and the tank will fall into the two paradox problems that the protection and cross-country ability can not be both. Unless new lightweight protective materials are developed to improve armor, tanks will be in a very dangerous position in future wars.

Source: @all1tribetattoos