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Notes on the Mean Aerodynamic Chord and the Mean Aerodynamic Centre of a Wing

  • A. H. Yates
Summary

The relations between the various reference chords used in reports on the loading of wings (standard mean chord, mean aerodynamic chord, centroid of area chord, and so on) are reviewed. Formulae are given for the position on these reference chords of the mean aerodynamic centre of certain simple “ additional” load distributions. References to convenient methods of calculating the load distribution on an arbitrary wing are also given.

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References
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Aerodynamic Centre

1. Falkner, V. M. (1944). Preliminary Notes on Aerodynamic Centres of Swept Back Wings. N.P.L. Note, 1944 (unpublished).
2. Falkner, V. M. (1944). Further Notes on Aerodynamic Centres of Swept Back Wings. N.P.L. Note, 1944 (unpublished).
3. Falkner, V. M. Notes on Aerodynamic Centres (unpublished).

Loading Distribution

4. Weissinger, J. (1947). The Lift Distribution of Swept Back Wings. N.A.C.A. Technical Memorandum 1120, 1947.
5. Schrenk, O. (1940). A Simple Approximate Method for Obtaining the Spanwise Lift Distribution. N.A.C.A. Technical Memorandum 948, 1940. Journal of the Royal Aeronautical Society, October 1941.
6. Van Dorn, N. H. and De Young, J. (1947). A Comparison of Three Theoretical Methods of Calculating Span Load Distribution on Swept Wings. N.A.C.A. Technical Note 1476, 1947.
7. De Young, J. and Harper, C. W. (1948). Theoretical Symmetric Span Loading at Subsonic Speeds for Wings having Arbitrary Plan Form. N.A.C.A. Report 921, 1948.

Basic Lift

8. Diederich, F. W. (1948). A Simple Approximate Method for Obtaining Spanwise Lift Distributions over Swept Wings. N.A.C.A. R.M. L7I07, 1948.
9. Stevens, V. I. (1948). Theoretical Basic Span Loading Characteristics of Wings with Arbitrary Sweep, Aspect Ratio and Taper Ratio. N.A.C.A. Technical Note 1772, 1948.
10. Stanton-Jones, R. (1950). A Rapid Method of Estimating the Basic Loading Distribution due to a Linear Twist on Wings of any Plan Form. Saunders-Roe Report A.S.R.7, 1950.

Additional Lift

11. De Young, J. (1947). Theoretical Additional Span Loading Characteristics of Wings of Arbitrary Sweep, Aspect Ratio and Taper Ratio. N.A.C.A. Technical Note 1491, 1947.
12. Stanton-Jones, R. (1950). An Empirical Method for Rapidly Determining the Loading Distributions on Swept Back Wings. College of Aeronautics Report No. 32, 1950.
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The Aeronautical Journal
  • ISSN: 0001-9240
  • EISSN: 2059-6464
  • URL: /core/journals/aeronautical-journal
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