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ESDU 92043

ESDU 92043 1992-DEC-01 Ptchng moment of low aspect rato wng-body combnatons up to hgh angles of attack at supersonc speeds

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ESDU 92043 presents a method based on evaluating the various contributions to the pitching moment, namely, those due to the body alone and the wing alone, together with interference components due to effect of the wing on the body, the body on the wing and the body vortices on the wing. It assumes the body alone pitching moment may be combined with the products of the normal forces and centres of pressure of the wing alone and interference components. The body alone pitching moment is obtained from ESDU 89014 (or the program of ESDU 90034), the wing-body mutual interference factors from ESDU 91007, and the body vortex interference factor from ESDU 91042. The wing centre of pressure and normal force are evaluated following ESDU 90013 and the centre of pressure of the carry-over load from the wing to the body is taken to be its aerodynamic centre determined from ESDU 92024. The method applies to delta, cropped delta or rectangular thin, sharp-edged wings without camber or twist mid-set on an axisymmetric forebody-cylinder combination for Mach numbers of 1.2 to 5, taper ratios of 0 to 1, and aspect ratios of 0.2 to 4 at angles of attack up to 60 degrees. It was tested against experimental data drawn from the literature and was found to be accurate within 0.03 of body length for body fineness ratios of 10 to 20 and diameter to wing span ratios of 2.1 to 8.

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