Why can gyroscopes reflect the rotation of an airplane but not the rotation of the earth

Jean-Bertrand-Léon Foucault (1819-1868). He proposed in 1851 the use of high-speed spin.

Spinning top to show the rotation of the Earth. The spinning top that rotates at high speed has a hold.

The nature of the axis of rotation is invariant. If the top is placed on a gimbal bracket and the support is on the earth, the earth rotates and the axis of the top does not rotate. After no.

More time, the change of the gyroscope relative to the bracket is clearly indicative of the earth.

rotation. Foko made use of the Foko pendulum he had invented the previous year and this spinning top.

The instrument eloquently proves the rotation of the earth. That's why Foucault also called it "turning."

Kinetic indicator". Since then, the universal bracket has a new name: gyroscope.

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In fact, it is the gyroscope principle, a principle common to rotating rigid bodies, which can be encyclopedized and not copied.

Due to the inherent principle of gyroscope, gyroscope can be used in aviation, navigation, aerospace and other fields, and there must be a gyroscope instrument in the cockpit of the aircraft, and the flight attitude of the aircraft can be known with the instrument.

The tilt angle of the earth is caused by the direction of the accretion of the surrounding matter when the earth was formed, and when the mass of the earth is getting larger and larger, the more obvious the gyroscopic effect is, the more difficult it is to change the direction of its axis, and it becomes what it is today.

In the principle of gyroscope, the direction of the rotating shaft is not actually static, but has a slow change, that is, "gyroscope precession", which has a proper term called "precession" in the earth

1957, former Soviet Union.

The world's first spacecraft, Sputney-1, was sent into space, which opened the exploration of space by human beings, and with the development of science and technology, more and more spacecraft were sent into space. Whether it is a spacecraft launched into space or a spacecraft from space, it generally rotates along the Earth.

The main reason why this is so is becauseLaunching a spacecraft in the direction of the Earth's rotation gives the spacecraft a tangential velocityto better get rid of gravity.

And that's not all,Using the inertia of the Earth's rotation, give the spacecraft oneAcceleration, which can save fuel on the spacecraft.

All objects on Earth are subject to the gravitational pull of the Earth.

If a spacecraft wants to fly out of space, it must get rid of the shackles of the earth's gravity, and the speed must exceed kilometers per second, and if a spacecraft wants to fly out of the solar system, the speed must reach kilometers per second. Therefore, if the spacecraft wants to fly out of the earth smoothly, it is very important to give it a tangential velocity, so that launching the spacecraft in the direction of the earth can generate a centrifugal force.

In this way, by resisting the gravitational pull of the earth, the spacecraft can break free from the shackles of the earth and fly into space.

Everyone knows that spacecraft need a lot of energy to fly into space, so the supply of fuel is crucial. The fuel also has a certain weight, if it carries too much fuel, it will inevitably affect the flight of the spacecraft, so the spacecraft will use multi-stage rockets to increase fuel. Not only that, if the spacecraft is launched in the direction of the Earth's rotation, the inertia of the Earth's rotation will provide the spacecraft with an initial velocity, which saves a lot of energy compared to perpendicular or against the direction of the Earth's rotation.

With the development of science and technology, manned spacecraft were born, and human beings officially began to set foot in space, so the successful return of spacecraft from space has become the top priority. And if it is against the direction of the rotation of the earth, then according to the relative velocity.

The principle that spacecraft and the Earth can never remain relatively stationary, and spacecraft will never be able to land on Earth.

Human exploration of space has never stopped, and in 1970, China's first artificial satellite, Dongfanghong No. 1.

In 2003, China's first manned satellite was launched, and China's space technology is becoming more and more developed. From beginning to end, when we launch spacecraft, we must launch in the direction of the earth's rotation, so as to better get rid of the gravitational constraints of the earth, and also save fuel. In order to keep the spacecraft and the Earth relatively stationary during the return home, the spacecraft must follow the direction of the Earth's rotation and the speed must be consistent with the Earth's rotation in order to land safely.

Because the large sedan car has a certain gravitational force for the earth, if we use the vertical flight method, even if the thrust is enough, the large spacecraft can reach the predetermined orbital altitude, but it will fall down due to the influence of the earth's gravitational ignition, so this way is undesirable.

However, because the direction of the earth's rotation is more in line with the laws of nature, you can better observe the trajectory of the earth, which is very convenient and safer.

Because the spacecraft flies in the direction of the Earth's rotation, it can use the inertia of the Earth's rotation to improve the success rate.

In the middle of a helpless space, a spacecraft.

It is very difficult to maintain a certain "posture" at all times, to orbit in a certain orbit, to lift a lap or to be "fixed" in a certain position in space.

There is no "wind" blowing in space, and there is no "man" to push, so why would the spacecraft "desert" on its own? In fact, due to the uneven gravitational pull in space, the residual atmosphere and the collision of tiny particles in space, the spacecraft will be in an unstable state.

In order to keep the spacecraft in a stable state, scientists.

Simply make the spacecraft spin like a spinning top. We know that all objects that rotate at high speed have a property that keeps the direction of the axis of rotation unchanged, which is called spin stability or axiality.

In space, the air resistance experienced by a spacecraft.

Very small and no friction.

Therefore, allowing the spacecraft to rotate like a gyroscope can be very cost-effective to maintain a stable orientation of the spacecraft, and this spin stability also has a strong anti-interference ability.