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lift
Definição1
That component of the total air force which is perpendicular to the relative wind and in the plane of symmetry.
Fonte1
SCHAFER, Joe. Helicopter maintenance. Englewood: Jeppesen Sanderson, Inc., c2007. viii, 343 p.
Definição2
One of the four main forces acting on a rotorcraft. It acts perpendicular to the relative wind.
Fonte2
FEDERAL AVIATION ADMINISTRATION. Rotorcraft flying handbook (FAA-H-8083-21). Washington, DC: FAA, 2000. Disponível em: http://www.faa.gov/library/manuals/aircraft/media/faa-h-8083-21.pdf. Acesso em: 10 fev. 2012.
Contexto
Even the slightest bit of frost, ice, or snow can reduce lift by 30 percent and increase drag by 40 percent.
Subárea
Aerodynamics
Français
portance
Imagem

 The four forces on an aircraft: lift, weight, drag and thrust.

The four forces on an aircraft: lift, weight, drag and thrust.

Fonte: http://en.wikipedia.org/wiki/File:Aeroforces.svg