# How does a pilot know the weight of a plane?

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Originally Answered: How do aircraft pilots know their passengers’ weights? … This is taken usually from a chart X number of passengers times X pounds. These pounds plus cargo, fuel weight, aircraft weight are all factored into the gross weight of the aircraft for take off, etc..

## What determines the weight of an airplane?

For an airplane, weight is always directed towards the center of the earth. The magnitude of this force depends on the mass of all of the parts of the airplane itself, plus the amount of fuel, plus any payload on board (people, baggage, freight, …).

## How do pilots calculate weight and balance?

Multiply each weight by the arm—the distance from the reference datum—to find the moment. Add all the weights to find the gross weight. Add all the moments to find the total moment. Divide the total moment by the gross weight to find the center of gravity.

## Why do pilots say heavier?

The word “heavy” means a larger aircraft type, with a Maximum Takeoff Weight of 160 tonnes or more. These aircraft create wake turbulence from their wings and require extra separation between following aircraft, and the use of “heavy” reminds other pilots of that fact.

## How do planes fly with so much weight?

A plane’s engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane’s weight and holds it in the sky. … The wings force the air downward and that pushes the plane upward.

## What force makes an airplane turn?

The horizontal component of lift is the force that pulls the aircraft from a straight flight path to make it turn. Centrifugal force is the “equal and opposite reaction” of the aircraft to the change in direction and acts equal and opposite to the horizontal component of lift.

## How heavy is an airplane in tons?

Airplanes

Type MTOW [kg] MLW [tonnes]
Airbus A380-800 575,000 394
Boeing 747-8F 447,700 346.091
Boeing 747-8 443,613 306.175
Boeing 747-400ER 412,770 295.742

## What is moment in aircraft weight and balance?

Moment—the product of the weight of an item multiplied by its arm. Moments are expressed in pound-inches (in-lb). Total moment is the weight of the airplane multiplied by the distance between the datum and the CG.

## What is moment in weight and balance?

A moment is the product of a weight multiplied by its arm. The moment for a piece of equipment is in fact a torque value, measured in units of inch-pounds (in-lb). To obtain the moment of an item with respect to the datum, multiply the weight of the item by its horizontal distance from the datum.

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## How do you calculate takeoff weight?

Subtract the total amount of fuel you have on takeoff from the amount you will use during your flight. What will be your takeoff fuel weight? To calculate your takeoff fuel weight, multiply your takeoff gallons by the weight of fuel.

## Why do pilots say Niner?

Aviators often speak “pilot English” to avoid miscommunications over radio transmission. “Tree” for instance, means three, “fife” is the number five and “niner” means nine, says Tom Zecha, a manager at AOPA. The variations stemmed from a desire to avoid confusion between similar-sounding numbers, he says.

## What do pilots say before landing?

Thank you.” To indicate the landing clearance or final approach, the Captain will either make the following announcement and/or blink the No Smoking sign. “Flight attendants, prepare for landing please.” “Cabin crew, please take your seats for landing.”

## Do fighter pilots wear diapers?

When flying long missions (say over the Atlantic, or missions lasting more than 4 hours) they can do 1 of 2 things. They have little pee bags containing a material that absorbs urine. They just pee in the them and stick them to the side. Or, they can wear adult diapers.

## What’s the most dangerous part of flying?

Boeing research shows that takeoff and landing are statistically more dangerous than any other part of a flight. 49% of all fatal accidents happen during the final descent and landing phases of the average flight, while 14% of all fatal accidents happen during takeoff and initial climb.

## Does flying affect weight?

Spending a lot of time on airplanes increases your risk of gaining weight, a recent study published in The New York Times has revealed. The most at-risk group are business travelers who fly regularly: from a few times a month to almost every day.

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## Why do planes do not fly over the Pacific?

The primary reason airplanes don’t fly over the Pacific Ocean is because curved routes are shorter than straight routes. Flat maps are somewhat confusing because the Earth itself isn’t flat. Rather, it’s spherical. As a result, straight routes don’t offer the shortest distance between two locations.