# Questions tagged [weight]

In science and engineering, the weight of an object is usually taken to be the force on the object due to gravity. Weight is a vector whose magnitude (a scalar quantity), often denoted by an italic letter W, is the product of the mass m of the object and the magnitude of the local gravitational acceleration g; thus: W = mg. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton.

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### Why are emergency parachutes for pilots so heavy?

Parachute technology doesn't seem to have got much lighter in the past few decades. It seems that most emergency parachutes designed for pilots still weigh about 15 lb. And yet a Cirrus BRS designed ...
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### How much does basecoat/clearcoat paint cost for an airline?

Suppose an airline with 15-20 A320 wanted to change the paint for the entire fleet, how much would it cost approximately? I need this for my thesis, but unfortunately, paint manufacturers I contacted ...
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### How heavy are the folding wingtips of 777x?

To understand the mass penalty that is induced by a folding wingtips, as a first order approximation we can start with just the wingtip's mass without the actuating mechanism. I could not find the ...
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### How does wind affect takeoff weight limits?

Two days ago I took off from BUR in relatively windy (although dry) conditions. Flightradar showed departure from runway 33, and winds were recorded roughly mid 20s kts from the N-NNE direction. ...
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### How do the various Weight on Wheels (WoW) systems work?

I know that Weight on wheels (WoW) switches indicate whether the weight of an aircraft is resting on its wheels. WoW information reveals whether the aircraft is airborne or on the ground. It also ...
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