What kind of plane is a plane with two leaves on its head

On the left is the call bell, which will notify the flight attendant to come to know your needs and assistance.

The classes of international tickets are mainly divided into:

First Class (F, A) for classes**;

Business Class (Classes C, D, J in Classes**);

Economy Class (Cabin** is Y).

The economy class is divided into different seat classes, and the cabins are B, H, K, L, M, Q, X, etc. (different airlines have different differences), and the discount classes are arranged in order.

The number of miles that can be accumulated in a flight is also accumulated according to the class of travel, for example: Air China (CA) %150% of the accumulated kilometers in first class, %100 in business class, %50 in economy class, and discount class is not accrued**Shared flights: 130% for first class, 90% for business class, %40 for economy class, and discount class are not accrual.

According to this point system, you can calculate how many points you can accumulate each time when you buy a ticket.

You see the button on the far left, it's a guy holding a tray in his hand, so this one is calling a flight attendant, and the second button is the shape of a light bulb, and you can't turn off the cabin light, so this is the reading light on your head, so it's easy for you to read books and magazines.

On the left is the call bell, which will notify the flight attendant to come to know your needs and assistance. The light bulb-like button on the right is a reading light switch, which does not have the function of broadcasting or any sound.

On the left is the call attendant, and on the right is the reading light!!

Left, call the waiter. Right, turn on and off the lights in front of the radio or yourself.

As long as you have been on the plane, you should know that there is a call bell on the left, press it and the service staff will come and ask you if you need something to solve the problem for you. The light bulb-like button on the right is the reading light switch, which makes it easy for you to read.

Since World War II The aircraft is powered by piston engines and has 5 to 6 propellers. After the Korean War, in the sixties and seventies, turboshaft engines were used as junior instructors, and most of them used 2-3 propellers. Jet engines are divided into turbine engines and turbofan engines.

The rotary vanes of the engine are divided into 5 and 6 stages, and there are 22 rotary vanes in each stage of the compressor, but each model is different, and the specific model is different. The aircraft has no gears, and the throttle lever of the aircraft has two conventional thrust valves that handle the aircraft at the maximum. Another afterburner thrust valve.

The throttle of an airplane is called a throttle valve. The afterburner thrust valve has a switch to control** so that the pilot can operate ** without leaving the handle. Civil aircraft are not so complicated.

Remember to adopt it.

The flight attendants of general flights will prepare meals and drinks in advance, and then put the meals and drinks in different places to facilitate passengers to take them, and the flight attendants will also mark them with different symbols or letters above the position of passengers in the cabin to facilitate passengers' identification. In the labeling process, a lowercase letter A, B, C, D, etc. is usually written above the passenger seat to distinguish different passenger seats, while the capital letters A, B, C, D, etc. above the passenger seat are used to mark different classes such as first class, business class and economy class.

Yes, the two balls above the head of the passenger seat are used to adjust the direction and strength of the air conditioner.

比翼双飞 bǐ baiyì shuāng fēi [paraphrase du] than wing: the wings are tight.

zhi by wings; Double Fly: Fly in pairs. Fly with the double residence and double version of the winged bird; It is a metaphor for husband and wife, and they are inseparable from each other.

"Erya Shakdi": "In the south, there are winged birds; Not better than not flying; Its name is the Bulbul. ”

Orthophony] wing; It cannot be pronounced as "jì".

Identification] wings; It cannot be written as "冀".

synonyms] fly with wings.

Usage] for husband and wife to fall in love; Moving forward side by side in their careers. It is generally used as a predicate, object, and complement.

Structure] Linked type.

You've only seen a propeller plane with only two leaves...In fact, propeller aircraft, in addition to the common two-bladed propellers, three-bladed propellers, also have four-bladed propellers and five-bladed propellersIt's nothing new for a single engine to drive eight paddles.

The fan or exhaust fan has 3-6 blades, because the working environment is different (the shape of the propeller blades is different), under the premise of having a certain wind force (speed), it is also necessary to be as silent as possible (**surface ratio propeller design)...Industrial fans are two-bladed paddle designs, which are many times higher than household fans in terms of wind power and noise.

It has something to do with the speed, if the aircraft uses six blades, the speed should be reduced, and the engine should add a set of deceleration devices. In short, at the same power, the more leaves, the slower the rotational speed.

So why are there so many leaves in the engines of jetliners?

The answer is "Flying with Wings".

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