# Aerodynamic force

﻿
Aerodynamic force
Forces on an aerofoil.

Aerodynamic force is exerted on a body by the air (or some other gas) in which the body is immersed, and is due to the relative motion between the body and the gas. Aerodynamic force arises from two causes: [1] [2] [3]

• the force due to the pressure on the surface of the body, and
• the force due to viscosity, also known as skin friction.

When an airfoil (or a wing) is moving relative to the air it generates an aerodynamic in a direction at an angle with the direction of relative motion. This aerodynamic force is commonly resolved into two components:[4][5]

• drag is the force component parallel to the direction of relative motion,
• lift is the force component perpendicular to the direction of relative motion.

The force created by a propeller or a jet engine is called thrust and it is also an aerodynamic force (since it also acts on the surrounding air). The aerodynamic force on a powered airplane is commonly resolved into three components: thrust, lift and drag.[6][7]

The remaining other force acting on a glider or powered airplane during flight is its weight. Note that weight is a body force, and it is not an aerodynamic force.

## References

• Hurt, H.H.Jr. Aerodynamics for Naval Aviators. A National Flightshop Reprint, Clearwater, Florida (1979)
• Clancy, L.J. (1975). Aerodynamics. Pitman Publishing Limited, London. ISBN 0-273-01120-0
• Massey, B.S. Mechanics of Fluids, 2nd Edition. Van Nostrand Reinhold Co., London (1970) Library of Congress Catalog Card No. 67-25005

## Notes

1. ^ Hurt, H.H.Jr. Aerodynamics for Naval Aviators. p.29
2. ^ Clancy, L.J. Aerodynamics. Section 4.10
3. ^ Massey, B.S. Mechanics of Fluids, section 10.8.2
4. ^ Hurt, H.H.Jr. Aerodynamics for Naval Aviators. p.14
5. ^ Clancy, L.J. Aerodynamics. Section 5.3
6. ^ Hurt, H.H.Jr. Aerodynamics for Naval Aviators. Fig 2.20
7. ^ Clancy, L.J. Aerodynamics. Section 14.2

Wikimedia Foundation. 2010.

### Look at other dictionaries:

• aerodynamic force — aerodinaminė jėga statusas T sritis automatika atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f rus. аэродинамическая сила, f pranc. force aérodynamique, f …   Automatikos terminų žodynas

• aerodynamic force — aerodinaminė jėga statusas T sritis Standartizacija ir metrologija apibrėžtis Atstojamoji jėga, kuria dujos ar oras veikia juose judantį kietąjį kūną. atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f; Luftkraft, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• aerodynamic force — aerodinaminė jėga statusas T sritis fizika atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f; Luftkraft, f rus. аэродинамическая сила, f pranc. force aérodynamique, f …   Fizikos terminų žodynas

• aerodynamic force — noun forces acting on airfoils in motion relative to the air (or other gaseous fluids) • Hypernyms: ↑force • Hyponyms: ↑aerodynamic lift, ↑lift …   Useful english dictionary

• aerodynamic lift — noun the component of the aerodynamic forces acting on an airfoil that opposes gravity • Syn: ↑lift • Hypernyms: ↑aerodynamic force • Hyponyms: ↑ground effect …   Useful english dictionary

• force aérodynamique — aerodinaminė jėga statusas T sritis automatika atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f rus. аэродинамическая сила, f pranc. force aérodynamique, f …   Automatikos terminų žodynas

• force aérodynamique — aerodinaminė jėga statusas T sritis Standartizacija ir metrologija apibrėžtis Atstojamoji jėga, kuria dujos ar oras veikia juose judantį kietąjį kūną. atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f; Luftkraft, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• force aérodynamique — aerodinaminė jėga statusas T sritis fizika atitikmenys: angl. aerodynamic force vok. aerodynamische Kraft, f; Luftkraft, f rus. аэродинамическая сила, f pranc. force aérodynamique, f …   Fizikos terminų žodynas

• Aerodynamic levitation — is the use of gas pressure to levitate materials so that they are no longer in physical contact with any container. In scientific experiments this removes contamination and nucleation issues associated with physical contact with a… …   Wikipedia

• Aerodynamic — Aer o*dy*nam ic, Aerodynamic A [ e]r*o*dy*nam ic, a. 1. Pertaining to the force of air in motion. [1913 Webster] 2. having a shape designed to minimize wind resistance (aerodynamic drag) when moving through the air or other gas; used especially… …   The Collaborative International Dictionary of English