About Spaceship Satellite 20

In space, spacecraft rely on rocket engines to fly, mainly relying on chemical reactions to produce high-speed air currents, and adjusting the course is the same. But in fact, when the spacecraft enters the predetermined orbit in space, the rocket engine will be extinguished, because the cosmic environment is close to a vacuum state, and there is basically no air resistance, so the rocket advances by inertia most of the time.

Spacecraft and satellites in space, generally using solar panels, fly along with orbit. For example, like Chang'e-1, why doesn't it fly directly to the moon, but orbit the earth and the moon? If you think about it, don't you make sense?

In space, the gravitational pull of an aircraft is very small (almost zero) and the drag of flight is also very small, so as long as it reaches a certain speed of motion, it can be maintained forever.

Spacecraft such as the Space Shuttle generally carry large amounts of fuel for the aircraft to lift off and return to Earth. But like satellites, they generally have a design life, which mainly refers to how long the fuel carried by the satellite can be used. After the satellite is pushed into a predetermined orbit in space by a rocket, the satellite will open its solar panels to generate electricity, but it is more troublesome to convert electricity into thrust.

When the satellite deviates from orbit, the computer sends a signal to the burner distributed by the satellite, which burns the fuel it carries to generate thrust to correct the satellite's orbit. (The surface of the satellite is provided with multiple combustion nozzles).

When the fuel is almost exhausted, the satellite will rush to the earth with the last bit of fuel, or do some space experiments (such as a lunar impact, etc.).

I didn't study this major, and I haven't studied it systematically, but I've just read some information in this area sporadically, so there may be mistakes, and I ask professionals to help point out ......

After the spacecraft flies outside the stratosphere and enters the universe, because there is no air (vacuum) liquid oxygen and liquid hydrogen can not continue to mix and burn, the spacecraft will continue to fly by inertia, and after entering the predetermined orbit, the ground control center will adjust it to continue to fly along the orbit by inertia.

Answer]: A satellites and spacecraft belong to the space field. ** and bonds belong to the financial sector. So choose A.

The difference between a spaceship and a satellite

1. Purpose of use. The spacecraft is to ensure that astronauts live in space and carry out certain work. Satellites are used to take photographs and reconnoiter the ground, survey resources, and monitor the earth's climate and pollution for astronomical observations.

2. Running time. The operation time of the spacecraft is from a few days to half a month. Satellites operate for months or years.

3. Different categories. A spaceship is a disposable spacecraft. A satellite is a spacecraft launched by a carrier rocket to operate at high altitudes.

A spacecraft is a spacecraft that transports astronauts, cargo to space, and returns safely. Spaceships can be divided into two types: single-use and reusable. A launch vehicle is used to launch a spacecraft into orbit around the Earth's satellite and then into the atmosphere.

In addition to the basic system equipment of general artificial satellites, the spacecraft also has a life support system, a re-entry system for returning to Earth, and a landing system.

A satellite is a natural celestial body that orbits a planet and orbits periodically in a closed orbit, and an artificial satellite can also be called a satellite. An artificial satellite is a device built by human beings and launched into space with space flight vehicles such as rockets and space shuttles to orbit the earth or other planets like natural satellites. Often there are many moons of gas planets.

Spaceships are celestial bodies. A celestial body is an object that exists in the universe, whereas a spaceship exists in the universe, so it is a celestial body.

A satellite is defined as a celestial body orbiting a planet. Satellites have natural ones, such as the Moon; There are also man-made ones, that is, artificial satellites. Whether a spacecraft is a satellite or not depends on the mission undertaken by the spacecraft.

If it is only in orbit around the Earth, it can only be a satellite, and it is an artificial satellite. If a spaceship leaves Earth and goes farther away, it is not a satellite.

Spaceships are celestial bodies but not satellites, and satellites are remotely controlled.

A spaceship is a single-use spacecraft that transports astronauts, cargo to space, and returns safely. It can basically ensure that astronauts can live in space for a short time and carry out certain work. Its operation time is generally a few days to half a month, and it is generally multiplied by 2 to 3 astronauts.

The world's first manned spacecraft was the Vostok 1 spacecraft. It consists of two cabins, the upper one is a sealed manned cabin, also known as the astronaut cockpit. It is a sphere with a diameter of meters.

The cabin is equipped with a life support system that can ensure the water supply and gas supply for the astronauts' lives, an attitude control system to control the attitude of the spacecraft, a beacon system to measure the flight trajectory of the spacecraft, a parachute system for landing, and an ejection seat system for emergency life. The other cabin is the equipment compartment, which is meters long and meters in diameter. The equipment compartment has a braking rocket system that makes the manned capsule get out of the flight trajectory and return to the ground, a battery for electric energy, a gas cylinder for gas storage, a nozzle and other systems.

The total mass of the Vostok 1 spacecraft is about 4700 kg. Both it and the launch vehicle are disposable, and they can perform only one mission.

On March 17, 1966, the astronauts of Gemini 8 made the first space docking. Soon after, the spacecraft damage system suddenly failed, and the astronauts had to make an emergency landing. Astronauts Neil A. Armstrong and David R. Scott successfully docked with the Argena spacecraft during the fifth lap of a planned three-day mission.

Half an hour later, the Twins were furious like an asterisk, and the capsule began to spin and lose control. Then, one of the 12 small booster rockets on board the spacecraft was unexplained**. The astronauts then separated their craft from Argenta and successfully landed in the Pacific Ocean.

The mass is about 4700 kg.

Sputniks are satellites that are artificially created to defend themselves.

Launch vehicles are arrows that carry fire.

A spaceship is a ship that flies in outer space.

The difference is that satellites are for defense, rockets are for transportation, and spaceships are for sightseeing.

An artificial satellite is a space orbit that recircles the Earth.

unmanned spacecraft operating (at least one lap).

A launch vehicle is a means of space transport. It is used to put payloads such as artificial earth satellites, manned spacecraft, space stations, and space probes into predetermined orbits.

A spaceship is a single-use spacecraft that transports astronauts, cargo to space, and returns safely.

Satellite role: The moon is the natural satellite of the earth, it can balance the rotation of the earth, stabilize the earth's axis, control the tides, can be used to observe time, etc., and can also imagine many beautiful legends.

The role of the manned spacecraft: as a space-to-earth shuttle, it picks up and drops astronauts for the space station. Former Soviet Union Russia's "Salyut" space station and the "Mir" space station were transported by the "Soyuz" manned spacecraft.

The main carrier of the International Space Station "is also a spacecraft.

conducting low-earth orbital flights; testing various manned space technologies; Such as orbital rendezvous and docking, astronauts out of the capsule into space; To investigate the effects of factors such as weightlessness and space radiation on the human body; development of aerospace medicine; transportation of personnel and supplies to the space station; the use of various remote sensing equipment for the observation of the Earth; conducting space exploration and astronomical observations; Go on a lunar flight or an interplanetary flight.