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Relate. Although the aircraft takes off with the coordination of individual parts, the main thing is that the aircraft has a pair of wings with a special profile shape.
Wing profiles are also known as airfoils. A typical airfoil is convex at the top and flat at the bottom, and is often referred to as streamlined. According to the continuity of the fluid and Bernoulli's theorem, the air flow through the upper surface is squeezed compared to the air far ahead, and the flow velocity accelerates and the pressure decreases, and even suction (negative pressure) is formed, and the flow velocity of the air flowing through the lower surface slows down.
As a result, a pressure difference is formed between the upper and lower wing surfaces. This pressure difference is aerodynamic. According to the law of force decomposition, it is broken down along the direction of flight into upward lift and backward resistance.
The drag is overcome by the thrust provided by the engine. The lift is just enough to overcome its own gravity and lift the aircraft into the air.
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It is related to velocity, the greater the velocity, the faster the relative air flow velocity, and the greater the lift gained.
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Related, only if the speed is high enough, the air flow up and down the wings is fast enough to generate enough lift!
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Personally, I think there is a relationship. The speed of the limit can get rid of the gravitational pull of the earth.
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Yes, there is no upward lift without velocity.
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The appearance of airplanes really makes our lives very convenient, it is said that if you want to get rich, you must first build roads, and now there is a direct means of transportation that can fly in the sky, so the economy will develop so fast, I don't know if everyone has such a question when they are young, why can airplanes fly so fast? We all know that an object wants to move by a lot of forces, so when the plane flies in the sky, it is subjected to a lot of forces, such as the earth's gravity, as well as air resistance and the propulsion of the engine, and the reason why the plane can fly so fast is because its power is very sufficient, and we will increase the resistance, but because of the fuselage, part of the resistance is turned into lift, so various forces push the plane to move quickly, and it can fly so fast.
And if the plane wants to take off, then it has to reach the acceleration of take-off before it can get off the ground, so a lot of research has been done on many aspects just for that reason, and don't you wonder why the plane looks like this? Of course, this is because this shape is conducive to its take-off and acceleration during flight. Therefore, the wisdom of human beings is really endless, and the ancient people would never have imagined that one day they could take a means of transportation to fly in the sky, but the ancients have not given up on the exploration of flying to the sky, and if you study history, you can also find that many people created a glider at that time, which is also very powerful.
There is also a very amazing point is that when you sit on the plane, you don't feel that the plane flies so fast, as if it is on the ground, in fact, the reason why you can't feel that the plane is moving fast is also because there is no reference, the plane is surrounded by the sky and clouds, and the clouds are very large, and the plane is also very far away In the absence of a reference, people always feel that they are standing still.
Human beings have never given up their yearning for the sky, and in ancient times they wanted to fly freely in the sky like a bird, and now we have really done it, so we have begun to move towards the universe, wanting to understand the mysteries of the universe, and we are also exploring the unknown step by step.
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The speed is determined by the force it receives, any object that wants to move must break the original force balance, and the aircraft in flight, the force has the earth's gravity, air resistance, the propulsion of the engine, the vertical direction of air lift, etc., at this time the source of the power of lift is the propulsion, because the propulsion force breaks the force balance in the front and rear directions, so that the aircraft moves forward, the resistance of the air will increase at this time, and the turbulence of the wing makes part of the resistance act on the lower part of the wing, becoming lift. In the three states of gas, liquid and solid, the resistance when moving in the gaseous state is the smallest, so theoretically speaking, as long as there is enough thrust, the aircraft can fly infinitely fast. All that is needed is to improve the materials used to make the aircraft, increase the thrust of the engines, and reduce the overall weight.
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Because the size of the aircraft is very large, if the speed is not fast, it cannot support it to get off the ground, so only a certain speed can make it fly off the ground. But it also has something to do with the force on the aircraft, if the drag on the aircraft is particularly strong, then the speed of the aircraft will not be very fast. But if the drag on the plane is very small, then the speed of the plane is indeed very fast.
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This is because the engine power of the aircraft is also sufficient, and the wings of the aircraft are curved, so there is very little resistance, so the speed of the aircraft is fast.
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Personally, I feel that because there are no obstacles in the air and the plane flies in a straight line, the speed is very fast, and it is also possible that the engine of the aircraft is more advanced and powerful, so the speed is also very fast.
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There are many kinds of speeds in airplanes, the two main ones are ground speed, the speed of the plane relative to the ground, and the table speed, which is displayed in the cockpit, which is the airspeed (relative to the speed of the air), because the speed of the airplane is displayed after correction by the change of air pressure with the airspeed tube
The speed of take-off is around 250 to 260 kilometers per hour, and the plane can be pulled up...
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It is not the same for different models.
Small piston domestic general aircraft are about 130 km h regional jet airliners, business jets are about 240 km h, medium airliners (e.g. Boeing 737) are about 280 km h, large airliners (e.g. Boeing 747) are about 325 km h
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The plane can be pulled up and taken off at an airspeed of 250-300!
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The flight speed of the aircraft is about 200 4000 kilometers per hour. It should be noted that there are many types of aircraft nowadays, and the flight speed will vary greatly. For example, civil aircraft generally fly at a speed of 800 to 1000 kilometers per hour.
In the case of fighter jets, the flight speed tends to be 200 400 kilometers per hour, while supersonic aircraft will fly even faster, generally reaching 1200 kilometers per hour by 4000 kilometers.
For example, the common Boeing 737 can reach a cruising speed of 900 kilometers per hour, while the Boeing 747 is faster than the Boeing 737, and the fastest cruise speed can be close to 1120 kilometers per small fluid trap. The flight speed and take-off speed of an airplane are different. Take-off speeds are generally slow, with most aircraft not exceeding 400 kilometers per hour.
In our country, the fastest flight speed of civil aircraft can reach 2600 kilometers per hour, but this speed is too fast, and the country does not allow civil aircraft to fly so fast. Because the plane flying too fast will bring more potential safety hazards, which may affect the personal safety of the aircraft and passengers, so the speed limit of civil aircraft is basically changed.
Airplanes are a mode of transportation that many passengers choose when traveling. The speed of the plane is relatively fast, which can greatly save time on the road. There are two types of aircraft, one is military aircraft and the other is civilian aircraft.
Military aircraft are mainly used in the military sector, while civil aircraft are non-military aircraft such as passenger planes or cargo planes.
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The flight speed of an airplane is the speed that an airplane achieves while flying in the air, usually measured in kilometers or miles of hours. The flight speed of an aircraft is determined by a variety of factors, including air pressure, temperature, humidity, altitude, return to the core front, wind direction, and wind speed, among others.
In the flight of an airplane, it is common for the speed to change. During takeoff and landing, the speed of the aircraft gradually accelerates or decreases. While cruising, the aircraft usually flies at a higher altitude, at which point the aircraft is usually the fastest.
Currently, commercial aircraft typically cruise at between 800 and 900 km/h. This speed may be affected by factors such as flight altitude, weather, and wind direction. On short-haul flights, the speed of the aircraft is usually slightly slower, while on long-haul flights, the speed of the aircraft is usually a bit higher.
In commercial aviation, the speed of the aircraft has a great impact on the flight time. If the speed of the aircraft can be increased, then the flight time will be reduced accordingly. Some airlines are also trying to increase efficiency and reduce costs by increasing the speed of their aircraft.
In addition to commercial aircraft, some military aircraft also have very high speeds. For example, the American SR-71 Blackbird reconnaissance aircraft can fly at speeds of up to 3,500 kilometers per hour, which makes it one of the fastest aircraft in history.
In general, although the flight speed of the aircraft is affected by a variety of factors, it is of great significance to the safety of the aircraft and the flight time. In the future, with the continuous development of science and technology, the speed of aircraft is expected to be further improved, bringing a more convenient experience to people's travel. <>
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The aircraft flies at speeds ranging from 200-4000 kilometers per hour.
Flight speed, the distance covered by the aircraft per unit time, is one of the important flight performance of the aircraft. Aircraft flight speed is measured in terms of gauge speed, airspeed, and ground speed. The aircraft flies at speeds ranging from 200-4000 kilometers per hour.
What is commonly referred to as flight speed refers to airspeed. A certain aircraft can only fly within a pre-designed minimum and maximum speed range, beyond which the flight is unsafe or even unsustainable. For aircraft, there are also parameters such as ascent speed (climb rate), ground clearance speed (see take-off), ground contact speed, descent speed (descent rate) and cruising speed (see Hangzi High Escort and Flight Time).
Reasons that affect the flight speed of the aircraft
1. Wind resistance and air resistance: When flying at high speeds, air resistance is the main limiting factor. As the speed increases, the drag increases, and more fuel needs to be consumed to maintain a stable flight.
2. Engine performance: The design and performance of the engine are important factors affecting the speed and altitude of the aircraft. The increase in engine output can increase the speed and altitude of the aircraft.
3. Air pressure and oxygen content: As the altitude increases, the air pressure decreases and the oxygen content decreases, which puts pressure on the aircraft engines and systems and also limits the altitude of flight.
4. Climatic conditions: Adverse weather conditions, such as thunderstorms, strong winds and snowfall, will affect the flight altitude and speed of the aircraft.
5. Flight area limitations: In different airspace, there are restrictions on flight altitude and speed beam. Especially in the vicinity of airports and in military areas, there are strict restrictions.
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