Is it impossible to fly without a sky?

Without the sky, you can't fly! But that's only temporary, everyone will have their own sky, just wait with your heart! You can take the time when there is no sky as an opportunity to relax and give yourself a vacation

Dreams are in everyone's heart, even if there is no sky, dreams can still fly, but if there is no dream, even if it is a sunny day, the sky has no color.

I don't know if you're talking about actual or something else, physically: the reason why you can fly is because there is air, there is space, and all of them are indispensable.

2: In other ways, our hearts have no hope, no space, and can no longer fly.

Hope you can.

The sky is the life of the wings, and the wings have to control the wind to fly the sky, if there is no sky, there are no wings, and there is no flight.

Dreams don't have to fly in the sky, it's a kind of faith, it's a kind of momentum, and with him, you can feel hope. He is a kind of inner motivation that he can survive without water. He doesn't need the so-called sky to fly, but uses your heart to fly!

What kind of sky do you mean?

Is it your own ideal or a dream?

I believe there will always be a sky of its own.

Whatever you think, you're sure to find it.

Hehe. The upstairs was nice.

It can't be without a sky. Because the absence of the sky means that there is no universe. Without the universe, there is no earth. Then there are no humans. What else to talk about flying??

Aerodynamics, when the velocity of the air flow increases, the pressure generated by the air flow decreases. The aircraft relies on the engine to push high-speed taxiing to achieve high-speed airflow around the aircraft, and the shape of the wing to achieve air flow speed The upper surface is higher than the lower surface, so that the pressure on the lower surface is greater than that on the upper surface, and the aircraft is lifted. That's flying.

Why do airplanes fly?

Why do airplanes fly? Despite the cooperation of various departments, the main thing is that the aircraft has a pair of wings with a special profile shape.

Newton's three laws of motion.

First Law: The velocity (v) of an object remains constant unless it is subjected to an external force.

Second Law: The momentum of an object with mass m (p

MV) is proportional to the applied force.

f and occurs in the direction of the force.

The third law: The action force and the reaction force are equal in value and opposite in direction.

Balance of forces. The force acting on the aircraft should be just balanced, if it is not balanced, the net force is not zero, according to Newton's second law will produce acceleration, in order to analyze the convenience of the force is divided into the balance of the three axes of x, y and z and the balance of the bending moment around the x, y and z axes.

The axial force imbalance will produce acceleration in the direction of the resultant force, and the force on the aircraft in flight can be divided into lift, gravity, drag, thrust, lift is provided by the wing, thrust is provided by the engine, gravity is generated by gravity, and drag is generated by air, we can decompose the force into two directions of force, called. x and.

Of course, there is also a Z direction in the Y direction, but it is not very important to the aircraft, unless it is in a turn, when the aircraft flies in a straight line at equal velocity, the drag in the X direction is opposite to the same thrust size, so the resultant force in the X direction is zero, the speed of the aircraft is unchanged, the lift in the Y direction is the same as the gravity and the opposite direction, so the resultant force in the Y direction is also zero, and the aircraft does not take off, so it will keep flying in a straight line at the same velocity.

In the case of aircraft, the x-axis moment unbalanced aircraft will roll, the y-axis unbalanced aircraft will yaw, and the Z-axis unbalanced aircraft will pitch.

Bernoulli's Law.

Bernoulli's law is the most important formula for aerodynamics, simply said that the greater the speed of the fluid, the smaller the static pressure, the smaller the velocity, the greater the static pressure, the fluid here generally refers to air or water, here of course, it refers to air, try to make the upper part of the wing air flow faster, the static pressure is smaller, the lower part of the wing air flow rate is slower, the static pressure is larger, the two sides compete with each other, so the wing is pushed up, and then the plane flies, the previous theory is that two adjacent air particles at the same time from the front end of the wing to the back, one flows through the upper edge of the wing, the other flows through the lower edge of the wing, the two particles should meet at the rear end of the wing, after careful calculations found that if according to the above theory, the flow velocity of the upper edge is not large enough, the wing should not be able to produce such a large lift, and now the wind tunnel experiments have confirmed that two adjacent air particles flowing through the upper edge of the wing will reach the trailing edge before the lower edge of the wing.

Do you know why airplanes can't fly into space?

One, haha this is also what I have always fantasized about, flying on its own without the help of any object, but now the flight has been realized, and the manned spacecraft has sent people to space and the moon, haha.

Second, the existence of all things must have its reason, and we can imagine that if people can really fly everywhere, then many creatures will inevitably fly, which is a very terrible thing.

Third, we can't fly, I personally believe that there is a universal ignition force on the earth, and its impact directly allows many creatures in nature to take root in the earth, and to float in space mainly depends on centrifugal force, the smaller the centrifugal force, the more unaffected by gravity, the higher the natural flight.

Fourth, everything has its advantages and disadvantages, and the two are not contradictory, so you can think about it, human beings are the highest level of animal skin Lu or, nature gives us high IQ and high emotional intelligence... It's a lot, and it's normal that we don't have the ability to fly on our own, and besides, we humans can create tools to help us fulfill our dream of flying.

This is because the bird is very light and its wings are relatively powerful, so it is very agile and maneuverable, and can quickly avoid obstacles in front of it.

However, it is not completely safe for birds to fly in the sky. For example, when encountering an airplane, it may not be able to dodge, and it will collide with the plane and die; Birds of prey may also be eaten; It can also be swept away by sudden winds; Wait a minute.