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Back to: "I"induced drag
- Definição1
- That part of total drag caused by the same aerodynamic factors that produce lift. Induced drag is dependent on the airfoil shape, its lift coefficient (CL2), velocity (1/V2), weight (w2) and aspect ratio (1/A) for a given airfoil, induced drag is directly dependent on the angle of attack. The greater the angle of attack up to the critical angle the greater the induced drag.
- Fonte1
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
- Definição2
- That part of the total drag that is created by the production of lift.
- 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.
- Fonte3
- FEDERAL AVIATION ADMINISTRATION. Helicopter flying handbook (FAA-H8083-21A). Washington, DC: FAA, 2012.
- Nota adicional1
- Induced drag is generated by the airflow circulation around the rotor blade as it creates lift. The high pressure area beneath the blade joins the low pressure area above the blade at the trailing edge and at the rotor tips. This causes a spiral, or vortex, which trails behind each blade whenever lift is being produced. These vortices deflect the airstream downward in the vicinity of the blade, creating an increase in downwash. Therefore, the blade operates in an average relative wind that is inclined downward and rearward near the blade. Because the lift produced by the blade is perpendicular to the relative wind, the lift is inclined aft by the same amount. The component of lift that is acting in a rearward direction is induced drag.
- Subárea1
- Aerodynamics
- Related Term
- drag
- Português
- resistência induzida
- Imagem
Relationship between drag and angle of attack for a given air speed.
Fonte: KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.