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Physical modelling of a flight control system

Published online by Cambridge University Press:  04 July 2016

S. Sadovnychiy
S. Sadovnychiy*
Affiliation:
Mexican Petroleum Institute, Mexico City, Mexico
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Abstract

This paper deals with the methods of physical modelling of Flight Control Systems (FCS) by means of Dynamically Similar free-flying Models (DSM) for the investigation of stability and controllability of aircraft at subsonic flight speeds. The subsonic flight regime allows us to avoid Mach number similarity considerations. The large scale of the DSM meets autosimilarity of Reynolds numbers, whilst Froude similarity is assured during the development and manufacturing of the DSM. This paper proves the presence of necessary and sufficient conditions of similarity for the FCS of an aircraft, and that of its DSM. The existence of necessary conditions have been proved both mathematically (by means of the π – Theorem from the theory of dimensions), and with equations involving physical quantities. The generalised scale coefficients for transitioning from the FCS’s aircraft gain factors, to those of the FCS of the DSM have been obtained, and it is shown that the coefficients depend only on the linear scale of the DSM.

Type
Research Article
Information
The Aeronautical Journal , Volume 107 , Issue 1071 , May 2003 , pp. 249 - 255
Copyright
Copyright © Royal Aeronautical Society 2003 

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References

1. Knotts, L. and Parrag, M. In-flight simulation at the Air Force and naval test pilot schools. Flight Simulation Technical Conference, 1983, AIAA-83-1078, pp 23–35.Google Scholar
2. Stout, E. Development of precision radio - controlled dynamically similar flying models IAS., 1946, VII, 13, 7, pp 335–345.Google Scholar
3. Research with high - speed models. The Aeroplane, 1951, 17, VIII, pp 190–192.Google Scholar
4. Dornheim, M.A. X-36 To Test agility of tailless design. Aviation Week & Space Technology, March 1996, 4, pp 20–21.Google Scholar
5. Flight tests with piloted models slated. Aviation Week & Space Technology, 1972, October 1972, pp 55–57.Google Scholar
6. Holleman, E.C. Summary of flight tests to determinate the spin and controllability characteristics of a remotely piloted, large-scale (3/8) fighter aeroplane model. NASA TN D-8052, 1976.Google Scholar
7. Barry, J. and Schelhort, A. A modest proposal for a new fighter in-flight simulator. 22nd Aerospace Sciences meeting, 1984, AIAA paper 86-0520. p.10.Google Scholar
8. Petersen, K.L. Flight control systems development of HiMAT vehicle, 1981, AIAA Paper N81-17989. pp 196–197.Google Scholar
9. Sadovnitchii, S., Ryabkov, V., Rushenko, A. and Sandoval, J. Modelling of aircraft flight by means of dynamically similar models with flight control system similarity, proceed, of AIAA Modelling and Simulation Technology Conference 97, 1997, New Orleans, USA. pp 326–332.Google Scholar
10. Durand, W.F. Aerodynamic Theory, Peter Smith, 1976, I, pp 23-30. VI, pp 203-204, 252–253.Google Scholar
11. Barnes, W. McCormick Aerodynamics, Aeronautics, and Flight Mechanics. John Wiley & Son, New York, 1979, pp 552–561.Google Scholar
12. Mykhalyov, I.A. Okoyemov, B.N. and Tchikylaev, M.C. Aircraft Automatic Control Systems, (in Russian), Machinostroyonie, 1987, 129, pp 51, Moscow.Google Scholar
13. Vyenikov, V.A. and Vyenicov, G.V. The Theory of Similarity and Modelling, (in Russian), Machinostroyenie. 1984, Moscow.Google Scholar
14. Sadovnychiy, S., Betin, A., Ryshenko, A. and Peralta, R. Simulation of aircraft flight dynamics by means of dynamically similar models. Proceed, of AIAA Modelling and Simulation Technology Conference-98, 1998, pp 64–69, Boston ,USA.Google Scholar
15. McRuer, D., Ashkenas, I. and Graham, D. Aircraft Dynamics and Automatic Control, Princeton University Press, Princeton, New Jersey, 1973.Google Scholar