A model wing is a flat plate of chord at incidence in a wind tunnel with air ( ) at

PHYSICS · Multi-part · Fermi University Physics · Fluids & Continuum Physics · Kinematics, conservation laws and ideal flow · Kinematics, conservation laws and ideal flow

Fluid Dynamics, Ch Potential flow, conformal mapping and the finite wing

Problem

A model wing is a flat plate of chord c=1.2 mc = 1.2\,\mathrm{m} at incidence β=7∘\beta = 7^{\circ} in a wind tunnel with air (ρ=1.2 kg m−3\rho = 1.2\,\mathrm{kg\,m^{-3}}) at U=45 m s−1U = 45\,\mathrm{m\,s^{-1}}. Model the flow as ideal, with the circulation fixed by the Kutta condition. ((a)) Find the circulation Γ\Gamma and the lift coefficient CLC_L. ((b)) Find the lift per unit span. ((c)) State the distance of the centre of pressure behind the leading edge.

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