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Browsing Aeronautical Research Council by Author "W. E. A. Acum"

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Aerodynamic forces on rectangular wings oscillating in a supersonic air stream

W. E. A. Acum (1950)

The aerodynamic forces on rectangular wings of various aspect ratios describing simple harmonic oscillations of small amplitude in a supersonic air stream are determined. Linearized theory is used and numerical solutions ...
Approximate wall corrections for an oscillating swept wing in a wind tunnel of closed circular section

W. E. A. Acum; H. C. Garner (1955)
A brief survey of some methods and information concerning the aerodynamic derivatives of wings in unsteady motion at transonic and supersonic speeds

W. E. A. Acum (1952)
Comparative calculations of supersonic pitching derivatives over a range of frequency parameter

H. C. Garner; W. E. A. Acum; Doris E. Lehrian (1961)
The comparison of theory and experiment for oscillating wings

W. E. A. Acum (1963)
The estimation of oscillatory wing and control derivatives

W. E. A. Acum; H. C. Garner (1964)
Interference corrections for asymmetrically loaded wings in closed rectangular wind tunnels

H. C. Garner; W. E. A. Acum (1953)

The problem of tunnel interference on a complete lifting wing fitted with ailerons is considered in relation to aerodynamic measurements on a six-component balance. Asymmetric loading introduces corrections to the incidence ...
Note on the effect of thickness and aspect ratio on the damping of pitching oscillations of rectangular wings moving at supersonic speeds

W. E. A. Acum (1954)
A note on the estimation of the effect of wind tunnel walls on the forces on slowly oscillating slender wings

W. E. A. Acum (1965)
Note on the evaluation of solid-blockage corrections for rectangular wind tunnels with slotted walls

W. E. A. Acum (1961)

During the preparation at the N.P.L. of a manual of tunnel interference the necessity arose for calculating additional values of the blockage-interference corrections for small bodies in incompressible flow in rectangular ...
Problems in computation of aerodynamic loading on oscillating lifting surfaces

H. C. Garner; W. E. A. Acum (1957)
Theoretical subsonic derivatives for an oscillating M-wing

H. C. Garner; W. E. A. Acum (1959)

The report describes a theoretical investigation in support of measurements being made on an oscillating half-wing model of the plan-form shown in Fig. 1 in the National Physical Laboratory 25 in. by 20 in. Wind Tunnel ...
Theory of lifting surfaces oscillating at general frequencies in a subsonic stream

W. E. A. Acum (1959)

Summary. This Report gives a description of an extension to wings oscillating at general frequencies of Multhopp\\'s lifting-surface theory for wings in steady subsonic flow. This particular variant of the \\'kernel ...
Wall corrections for wings oscillating in wind tunnels of closed rectangular section. Part I Theory and Tables. Part II Applications to a Delta Planform in a 9 x 7 Tunnel

W. E. A. Acum (1958)

A method of calculating the tunnel interference due to oscillating loadings on wings in rectangular tunnels is described. This will apply to incompressible flow for all frequencies or to subsonic flow for small frequencies. ...

Browsing Aeronautical Research Council by Author "W. E. A. Acum"

Browsing Aeronautical Research Council by Author "W. E. A. Acum"

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