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Put away your small table.
Just drop off your seat belts.
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Hello, dear, I am glad to answer for you: The operation to be done when the aircraft is ready to descend is: During the descent, the main thing is to control the steering wheel and throttle to maintain a good descent speed and descent angle.
As long as the throttle is in the specified position and the steering stick maintains the specified descent speed, a predetermined descent angle can be obtained. When the aircraft descends, the operation plus and minus the throttle changes the descending angle and descending distance. In the descent, do not move the driving wheel, that is, the angle of attack keeps downward, the throttle can reduce the descending angle, the descending speed is slightly increased, the descending distance increases, the throttle can increase the descending angle, the descending speed is slightly reduced, and the descending distance is shortened.
When the throttle is filled, the pulling force increases, the descending speed increases, and the rising and resistance increases. The basic control method of the aircraft from level flight to descent is generally: gently push forward the steering wheel to reduce the angle of attack, make the aircraft gradually turn into the descent, and at the same time retract the throttle, reduce the pulling force.
When the aircraft is close to the predetermined descent angle (descent rate), the steering wheel should be pulled back in time to keep the predetermined descent angle down.
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Summary. Dear Hello, I am glad to answer for you: Precautions for aircraft take-off and landing: Attention needs to be paid to fastening seat belts when taking off and landing of aircraft, and tinnitus symptoms may occur.
Hello, I am glad to answer for you: Precautions for aircraft take-off and landing: When the plane takes off and lands, you need to pay attention to fastening your seat belt, and you may experience tinnitus symptoms.
The following is what I have inquired about for you: The discomfort reaction that is easy to occur during take-off and landing is mainly tinnitus, which is because when the plane takes off rapidly, the surrounding air pressure changes suddenly, and our inner ear tissue cannot respond quickly, and the air pressure in the Eustachian tube is different from the air pressure in the outer ear, resulting in a temporary blockage and hearing insensitivity. Usually after a while, the earbuds will gradually disappear.
In such a situation, you can swallow saliva, yawn and other actions to help the eustachian tube quickly adjust the air pressure difference between the inner and outer ears to relieve discomfort.
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That is true. After the plane lands, the main thing is to slow down.
The means are the following three:
1. Engine thrust back.
2. Speed brake.
3. Wheel brakes.
However, I want to point out that the deceleration capability provided by the engine's thrust reverser power is not very obvious. Its main function is to protect the brakes. As a result, we see that the aircraft's thrust reverser system is not included in the list of minimum equipment.
This also shows that it is not particularly important.
I think the thing that should catch our attention the most is the airbrake. Many people think that these small wrenches will not do much to slow down. In fact, the opposite is true, the speed brake is crucial for deceleration!
After landing, the airbrake opens, which destroys the lift structure of the wing, so that the weight of the aircraft is pressed on the wheels as much as possible. In this way, the efficiency of wheel braking becomes very high. If the airbrake does not rise after landing, then the wheels have hit the ground.
But a significant part of the weight of the aircraft is still offset by the lift of the wings. This is not good for the braking of the wheels.
Someone has done a professional test, and the deceleration efficiency of the speed brake can vary by more than 60% between rising and not rising.
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The moment the wheels contact with the ground, the white smoke is everywhere because the wheels are stationary before grounding, and they must quickly reach the same speed as the aircraft after grounding, so the friction generated at the moment of grounding is very large, which makes the friction between the tire and the ground produce a lot of heat, and it will also leave a trace of tire locking on the runway.
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Airplanes are one of the most important scientific and technological achievements of mankind in the 20th century, and they are also an important means of transportation today.
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Mainly baffles, speed brakes, brakes.
In addition, to correct a mistake made by someone upstairs, the plane is never allowed to land with empty fuel tanks, and generally 20% of the fuel is left.
It is necessary to prevent unsuccessful landing and re-take-off, especially military aircraft.
There are also such provisions for civil aircraft.
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Usually it reaches civil aircraft: the engine output power gradually decreases, and the air resistance effect; In addition, the angle of the flaps is adjusted to increase the drag area.
There are many braking methods for military aircraft, which require short-distance braking, reverse jet engines, drag umbrellas, and drag cables on aircraft carriers.
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The most suitable and ideal take-off and landing conditions for the aircraft are:1Headwind 3-5 m sec. 2No turbulence and turbulence (no bumps)3Visibility is greater than 10 hectares, and the cloud base height is higher than 1500 meters4There is no precipitation (including rain and snow).
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3.Take-off phase: When the aircraft reaches take-off speed, the crew will pull the Flyer up and lift it off the ground. During takeoff, the crew needs to pay close attention to the speed, altitude and direction of the aircraft to ensure that the aircraft lifts off smoothly.
2.Taxiing phase: Before the aircraft takes off, taxiing is required.
Taxiing is when an aircraft travels on the ground to reach the speed and power of take-off. The crew needs to follow the designated taxiing route, maintain a certain speed and direction, and at the same time observe the ground situation and the state of the aircraft's instruments.
2.Airport conditions: Different airports have different requirements when taking off and landing, and the spring backup crew needs to understand the regulations and requirements of the airport in order to operate according to the requirements.
3.Crew skills and experience: The skills and experience of the crew are critical to the safety of aircraft take-off and landing. Crews need to receive professional training and training to continuously improve their skills and experience in order to cope with various situations during take-off and landing.
In short, aircraft take-off and landing is one of the most critical aspects of flight, and the crew needs to operate in strict accordance with the regulations and requirements to ensure the safety of the aircraft and the comfort of passengers.
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The take-off of an airplane depends on the lift generated by the relative motion with the air, and the magnitude of the lift depends on the relative speed of the aircraft with the air, not the relative speed of the aircraft with the ground.
The landing of an airplane is similar to that of an airplane taking off. During landing, the aircraft needs to maintain sufficient lift while constantly decelerating to ensure that the aircraft can descend smoothly.
If taking off against a headwind, the aircraft taxiing speed is opposite to the direction of the wind speed, and the relative velocity of the aircraft and the air is equal to the sum of the two. At this point, the aircraft only needs a small glide speed to get the lift it needs to get off the ground.
As a result, the distance required to take off against the wind will be shorter than if it were to take off without wind. Conversely, if taking off downwind, the aircraft needs to reach a higher taxiing speed to get the lift required from the ground, and the glide distance is relatively longer.
When landing against headwinds, the aircraft can obtain the required lift at a lower speed, thereby reducing the relative velocity to the ground at the moment of grounding, thereby reducing the taxiing distance.
In order to achieve the same lift, the relative velocity of the aircraft to the ground is greater than when landing against the wind. This makes the speed of the aircraft at the moment of grounding larger, the taxiing distance longer, and the poor control is easy to cause potential safety hazards.
In addition, the direction of the runway is fixed, but the direction of the wind changes frequently. Therefore, when the aircraft takes off and lands, it is not always headwind, and it is often carried out in crosswind conditions.
Due to the slow speed and poor stability of the aircraft during take-off and landing, the aircraft may deflect in case of strong crosswinds, which increases the difficulty of the pilot's operation. Therefore, when the aircraft takes off and lands in crosswinds, the pilot should pay special attention to correcting the deviation, otherwise there will be a danger of taxiing off the runway.
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Aircraft take-off control stage: control the aircraft to taxi to the take-off line first, brake the wheels, put the flaps in the take-off position, and increase the engine speed to the maximum, and then release the brakes, and the aircraft begins to accelerate and slide under the action of thrust.
When the running speed reaches a certain value, the driver pulls the steering stick back and lifts the front wheel to increase the angle of attack. After that, the aircraft continues to glide with only two main wheels, and the lift of the wings increases with the speed of the taxi, and when its value is equal to the weight of the aircraft, the aircraft leaves the ground and accelerates to climb. Climb to a height of 10 15 meters on the retracted landing gear, after the rise to an altitude of 25 meters the take-off phase ends.
Aircraft landing: The pilot judges the landing process of the aircraft through autonomous observation (in high-end operation, the landing parameters are displayed through the ILS flight computer, and the pilot operates according to the instructions), and then reduces the speed to the calculated final approach speed, and as the speed slows down, the flaps gradually help the aircraft to better slow down, and the landing gear is lowered and locked.
If the aircraft fails to land when it passes the decision altitude, the landing is immediately canceled and the go-around procedure begins.
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Take-off and landing of aircraft are achieved by changing the flow of air up and down the wings by the lifting ailerons behind the wings.
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The discomfort that is easy to occur when the plane takes off and lands is mainly tinnitus, this is because when the plane takes off and takes off rapidly, the surrounding air pressure changes suddenly, and our inner ear tissue cannot respond quickly, and the air pressure in the eustachian tube is different from the air pressure in the outer ear, resulting in a temporary blockage, and the phenomenon of hearing insensitivity will occur. Usually after a while, the earbud phenomenon will gradually disappear.
In case of such a situation, you can help the eustachian tube quickly adjust the air pressure difference between the inner and outer ears by swallowing saliva and yawning to relieve discomfort.
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Abstract 1The discomfort that is easy to occur when the plane takes off and lands is mainly tinnitus, this is because when the plane takes off and takes off rapidly, the surrounding air pressure changes suddenly, and our inner ear tissue cannot respond quickly, and the air pressure in the eustachian tube is different from the air pressure in the outer ear, resulting in a temporary blockage, and the phenomenon of hearing insensitivity will occur. Usually after a while, the earbud phenomenon will gradually disappear.
2.In such a situation, you can help the eustachian tube quickly adjust the air pressure difference between the inner and outer ears by swallowing saliva, yawning and other actions to relieve discomfort.
What should I pay attention to when taking off by plane and what should I pay attention to when landing? What are the discomforts of take-off and landing, and what can I do?
1.The discomfort that is easy to occur when the plane takes off and lands is mainly tinnitus, this is because when the plane takes off and takes off rapidly, the surrounding air pressure changes suddenly, and our inner ear tissue cannot respond quickly, and the air pressure in the eustachian tube is different from the air pressure in the outer ear, resulting in a temporary blockage, and the phenomenon of hearing insensitivity will occur. Usually after a while, the earbud phenomenon will gradually disappear.
2.In such a situation, you can help the eustachian tube quickly adjust the air pressure difference between the inner and outer ears by swallowing saliva, yawning and other actions to relieve discomfort.
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