Hostname: page-component-848d4c4894-8bljj Total loading time: 0 Render date: 2024-07-08T00:08:18.017Z Has data issue: false hasContentIssue false

Analogue Computing in Aeronautics

Published online by Cambridge University Press:  28 July 2016

K. V. Diprose*
Affiliation:
A. V. Roe and Company Ltd.

Extract

I intend in this lecture to discuss tlie ways in which I think analogue computing can be of assistance to aeronautics in the future. I shall therefore be less concerned with how they are built, than with how they are used, and in fact, what circumstances justify using them at all. Up to a few years ago the only large computors were analogue ones, so the user had no choice, but when the automatic digital computor became established as a practical machine (and even before) there were many people to suggest that the analogue was obsolete. This view is now less widely held, even by makers and designers of digital machines, and reviews of aeronautical computing aids have usually found some place for the analogue computor, without establishing any general principles on which the choice has been made, except, perhaps, to suggest that the accuracy required is the criterion.

I shall start by describing three of the types of computor most commonly used in aeronautics, the “ response simulator,” the “ electrolytic tank” and the “network analyser” and use these to illustrate the particular properties of analogue computing.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1955

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Korn, G. A. and Korn, T. M. (1952). Electric Analogue Computers. McGraw-Hill Book Co. 1952.Google Scholar
2. Raymond, F. H. (1952). Le Calcul Analogique Recueil de conférences données en Mai 1952 a L'Institut National pour les applications du calcul á Rome.Google Scholar
3.A General Purpose Analogue Computer. Short Bros. & Harland. 1953.Google Scholar
4. Pérès, J. (1938). Analogy Methods in Applied Mechanics. 5th Int. Congr. Applied Mechanics, Cambridge (Mass.). 1938.Google Scholar
Malavard, L. (1947). The Use of Rheo–electrical Analogies in Certain Aerodynamical Problems. Journal of the Royal Aeronautical Society, Vol. 51, p. 739. 1947.CrossRefGoogle Scholar
5. Liebmann, G. (1953). Electrical Analogues. British Journal of Applied Physics, Vol. 4, pp. 193200. 1953.CrossRefGoogle Scholar
6. Stenstrom, L. (1950). The S.A.A.B. Gradient Tank. S.A.A.B. Sonics, Vol. 12, p. 18. 1950.Google Scholar
7. Taylor, G. I. and Griffith, A. A. (1917). The Use of Soap Films in Solving Torsion Problems. R. & M. (New Series), No. 333. 1917.Google Scholar
8. Redshaw, S. C. (1952). Electrical Analogues for the Solution of Problems Concerning the Extension and Flexure of Flat Elastic Plates. A.R.C. Paper 15,335. Struct. 1583. Comp. 16. 1952.Google Scholar
9. Spearman, Gate Hemingway, and Hynes, TRIDAC : A Large Analogue Computing Machine. To be published in Journal of the Institute of Electrical Engineers. Google Scholar
10. Williams, D. (1954). Recent Developments in the Structural Approach to Aeroelastic Problems. Journal of the Royal Aeronautical Society, Vol. 58, p. 403, 1954.CrossRefGoogle Scholar
11. Mallock, R. M. (1933). An Electrical Calculating Machine. Proc. Royal Soc, Series A , Vol. 140, pp. 457483. 1933.Google Scholar
12.Electrical Computer Bulletin C.E.C. 1802A. Consolidated Engineering Corpn.Google Scholar
13.Küchemann, D. and Redshaw, S. C. (1954). Some Problems in Aerodynamics and Their Solution by Electrical Analogy. R.A.E. Tech. Note. Aero. 2323. 1954.Google Scholar
14. Strang, C. R. (1951). Computing Machines in Aircraft Engineering. Joint A.I.E.E. and I.R.E. Computer Conference, Dec. 1951. (A.R.C. Paper 14,767, 0.982, Comp. 4. 1952.)Google Scholar
15. Bush, V. and Caldwell, S. H. (1945). A New Type of Differential Analyser. Journal of the Franklin Institute, Vol. 240, No. 4, pp. 255326. October 1945.CrossRefGoogle Scholar
16. Hartree, D. R., (1946). The ENIAC, an Electronic Computing Machine. Nature, Vol. 158, pp. 500506. October 12, 1946.CrossRefGoogle Scholar
Calculating Machines: Recent and Prospective Developments and their Impact on Mathematical Physics. Cambridge University Press, pp. 1427. 1947.Google Scholar
17. Donan, J. F. (1952). The Serial–Memory Digital Differential Analyser. M.T.A.C. Vol. 6, No. 38, pp. 102110. April 1952.Google Scholar
Sprague, R. E. (1952). Fundamental Concepts of the Digital Differential Analyser. M.T.A.C, Vol. 6, No. 37, pp. 4149. January 1952.Google Scholar
18. Shercliffe, J. A. (1951). Mechanical Computation with Relation to Aeronautical Engineering. A. V. Roe & Co. Ltd., Manchester. August 1951. (A.R.C. Paper 15,154, Comp. 2, 1952.)Google Scholar
19. Cozzone, F. P. (1952). Organising a Computer Center. Product Engineering, pp. 136141. January 1952. (A.R.C. Paper 15,399, Comp. 8, 1952.)Google Scholar
20. Dryden, H. L. (1950). Application of High–Speed Computing in Aeronautical Research. Paper presented to The Association for Computing Machinery, Washington D.C., Sept. 1950. (A.R.C. Paper 13,864, Comp. 9, 1951.)Google Scholar