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Design of control laws to implement ACT benefits

Published online by Cambridge University Press:  04 July 2016

J. G. Jones
J. G. Jones*
Affiliation:
Head of Control Division (FS8), Royal Aircraft Establishment, Farnborough
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Extract

The emergence of active control technology (ACT) as a design feature of future combat aircraft raises three fundamental requirements (a) the identification of those areas where active control is likely to make for more efficient designs (b) the development of a capability to produce system hardware and software satisfying the stringent integrity requirements which the envisaged ACT applications demand, and (c) the development of a capability to implement successfully the ACT benefits, emerging from (a), by means of appropriate control laws.

This paper is concerned primarily with Item (c). Subjects considered include the design of control laws for fast target acquisition and precise tracking, the design of ride-smoothing systems, control laws for manoeuvre limiting at high angles of attack, and flying qualities problems associated with aerodynamically-unstable air-craft.

The design of control laws takes place through a series of steps including initial computer-aided studies followed by ground-based simulation with the pilbt-in-the-loop and ultimate validation (probably with re-tuning of control-loop parameters) through flight test.

Type
Research Article
Information
The Aeronautical Journal , Volume 84 , Issue 829 , January 1980 , pp. 13 - 21
Copyright
Copyright © Royal Aeronautical Society 1980 

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References

1. Corbin, M.J. and Winter, J.S. TSIM—a combined analysis package for the design of flight control systems. (Unpublished) RAE Technical Memorandum, 1978.Google Scholar
2. Whitehead, A. M., Hall, J. R. and Foster, G. W. A simulator study into the effects of aircraft pitch response on pilot induced oscillations during target tracking. RAE Technical Report 77067, 1977.Google Scholar
3. Fry, D. E., Verey, P. and Winter, J. S. A preliminary simulator assessment of direct-lift control for augmenting the handling qualities of combat aircraft. (Unpublished) RAE Technical Memorandum, 1978.Google Scholar
4. Hunt, G. H. The evolution of fly-by-wire control techniques in the UK. Paper presented at 11th Congress of the International Council of the Aeronautical Sciences. Lisbon, September 1978.Google Scholar
5. Burns, B. R. A. Benefit of ACT on military combat air craft. Paper I of present symposium.Google Scholar
6. Whitehead, A. M. Control law design studies for a FBW aircraft: longitudinal handling qualities for target acquisition and tracking. (Unpublished) RAE Technical Memorandum, 1976.Google Scholar
7. Winter, J. S. A non-linear control law for FBW aircraft and its use in target acquisition and tracking. (Unpublished) RAE Technical Memorandum, 1978.Google Scholar
8. Hartman, G. L., Hauge, J.A. and Hendrick, R. C. F-8 digital CCV flight control laws. NASA CR-2629, 1976.Google Scholar
9. Winter, J. S. A comparison of various spin/stall prevention and incidence limiting systems. RAE Technical Report 79046, 1979.Google Scholar
10. Fry, D.E. and Winter, J.S. The design of aircraft automatic ride systems using direct lift control. RAE Technical Report 79045, 1979.Google Scholar
11. Jones, J. G. and Fry, D. E. Aircraft ride-bumpiness and the design of ride-smoothing systems. AGARD CP No 240, 1977.Google Scholar
12. Gill, F. R. Engineering of control systems and implications on control law design. AGARD Lecture Series No 89 on Task-Oriented Flight Control Systems, 1977.Google Scholar
13. Winter, J.S. A non-linear ride-controlsystem. (Unpublished) RAE Technical Memorandum.Google Scholar
14. Pinsker, W. J. G. The flying qualities of aircraft with augmentedlongitudinal anddirectionalstability. Von Karman Institute for Fluid Dynamics, Lecture Series 1979-1, Active Control Technology, December 1978.Google Scholar