Digital Flight Control Actuation System Study

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Digital Flight Control Actuation System Study

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Author :
language : en
Publisher:
Release Date : 1974

Digital Flight Control Actuation System Study written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.

A Study Of Digitally Controlled Flight Control Actuation

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Author : Howard H. Belmont
language : en
Publisher:
Release Date : 1983

A Study Of Digitally Controlled Flight Control Actuation written by Howard H. Belmont and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Actuators categories.

This report describes a study of flight control actuation system with an objective to determine the degree of digitalization possible between the digital flight control processor and the control surface. A typical analog actuation system is defined as a reference for comparison with five alternates, each mechanized with increasing amounts of digital equipment. The report provides a basis for determining the direction of digital actuation systems. It verifies that distributed actuation systems are now feasible and promise enhanced performance, reliability, and cost reductions.

Preliminary System Design Study For A Digital Fly By Wire Flight Control System For An F 8c Aircraft

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Author : C. L. Seacord
language : en
Publisher:
Release Date : 1976

Preliminary System Design Study For A Digital Fly By Wire Flight Control System For An F 8c Aircraft written by C. L. Seacord and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Airplanes categories.

The design of a fly-by-wire control system having a mission failure probability of less than one millionth failures per flight hour is examined. Emphasis was placed on developing actuator configurations that would improve the system performance, and consideration of the practical aspects of sensor/computer and computer/actuator interface implementation. Five basic configurations were defined as appropriate candidates for the F-8C research aircraft. Options on the basic configurations were included to cover variations in flight sensors, redundancy levels, data transmission techniques, processor input/output methods, and servo actuator arrangements. The study results can be applied to fly by wire systems for transport aircraft in general and the space shuttle.

Analysis Of A Digital Flight Control System

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Author : Robert Charles Rose
language : en
Publisher:
Release Date : 1967

Analysis Of A Digital Flight Control System written by Robert Charles Rose and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.

Flight Control Systems

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Author : Roger Pratt
language : en
Publisher: IET
Release Date : 2000

Flight Control Systems written by Roger Pratt and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Technology & Engineering categories.

Annotation Bridging the gap between academic research and real-world applications, this reference on modern flight control methods for fixed-wing aircraft deals with fundamentals of flight control systems design, then concentrates on applications based on the modern control methods used in the latest aircraft. The book is written for practicing engineers who are new to the aviation industry, postgraduate students in strategic or applied research, and advanced undergraduates. Some knowledge of classical control is assumed. Pratt is a member of IEEE and is UK Member for AIAA's Technical Committee on Guidance, Navigation and Control. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Research And Development Of Aircraft Control Actuation Systems

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Author :
language : en
Publisher:
Release Date : 1986

Research And Development Of Aircraft Control Actuation Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

This report describes the design and test of a multipurpose actuation test rig to be used for loaded evaluation of actuation systems with rotary outputs and/or integrated as part of wing structure. It also describes a hydromechanical flutter damping module for an F-4 stabilator actuator. The module incorporates design improvements based on previous test results. Laboratory tests results on the improved module are presented. Development and test results of a linear force motor based upon a moving magnet concept, and the measured performance characteristics of the concept over a range of parameter variations are presented. A method of force enhancement for direct drive force motors and the corresponding test results applied to a moving coil force motor are described. The concept is based upon applying a limited time duration pulse to the force motor in order to increase the force output when required. The logic technique used to initiate the pulse application is presented. Applying a digital computer as a controller for an analog electrohydraulic control system requires consideration of the interface used. The effect of a pulse width modulation interface on the life of analog electrohydraulic hardware is presented. There is a potential for reducing the pumping capacity of an aircraft's flight control hydraulic system by using accumulators to store hydraulic energy. The results of a study using this approach and an F-16 simulation are presented. Keywords: Digital interface; Energy storage; Flight control hydraulics; Force enhancement, Flutter suppression.

Analysis Of Digital Flight Control Systems With Flying Qualities Applications

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Author : Richard F. Whitbeck
language : en
Publisher:
Release Date : 1978

Analysis Of Digital Flight Control Systems With Flying Qualities Applications written by Richard F. Whitbeck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Airplanes categories.

Revisitation and extension of classical sampled data approaches for the analysis of discretely controlled continuous systems is the focus of this report. A review of basic linear analysis topics required to support later developments is given. These topics include Laplace, z- and advanced z-transform facts; partial fraction expansion; data holds and the switch decomposition technique. Extension of switch decomposition for the vector signal case is given. A new direct transform domain approach for analyzing two-rate sampled systems is developed. This approach also applies for multi-rate sampled systems in restricted circumstances. Utility of this approach resides in its operator notation and conventions for manipulation in connection with vector block diagram algebra. This, in turn, expedites development of pulse transfer functions and of response recursion relations for multivariable, closed-loop systems. This is accomplished without resorting to the more complicated switch decomposition method. Multi-rate sampling analysis procedures are used to sharpen the concept of 'frequency response' for discretely excited, continuous systems. All methods of analysis presented in this report are closed-form and exact in that no approximation is required in the mathematical development of any result.

Dispersed And Reconfigurable Digital Flight Control System Study App D Simulation Software

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Author : Jean A. Boudreau
language : en
Publisher:
Release Date : 1979

Dispersed And Reconfigurable Digital Flight Control System Study App D Simulation Software written by Jean A. Boudreau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.

Systems Study For An Integrated Digital Electric Aircraft Idea

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Author : G. E. Tagge
language : en
Publisher:
Release Date : 1985

Systems Study For An Integrated Digital Electric Aircraft Idea written by G. E. Tagge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Airplanes categories.

The results of the Integrated Digital/Electric Aircraft (IDEA) Study are presented. Airplanes with advanced systems were, defined and evaluated, as a means of identifying potential high payoff research tasks. A baseline airplane was defined for comparison, typical of a 1990's airplane with advanced active controls, propulsion, aerodynamics, and structures technology. Trade studies led to definition of an IDEA airplane, with extensive digital systems and electric secondary power distribution. This airplane showed an improvement of 3% in fuel use and 1.8% in DOC relative to the baseline configuration. An alternate configuration, an advanced technology turboprop, was also evaluated, with greater improvement supported by digital electric systems. Recommended research programs were defined for high risk, high payoff areas appropriate for implementation under NASA leadership.

Digital Flight Control Research

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Author : J. E. Potter
language : en
Publisher:
Release Date : 1974

Digital Flight Control Research written by J. E. Potter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Airplanes categories.

The results of studies which were undertaken to contribute to the design of digital flight control systems, particularly for transport aircraft are presented. In addition to the overall design considerations for a digital flight control system, the following topics are discussed in detail: (1) aircraft attitude reference system design, (2) the digital computer configuration, (3) the design of a typical digital autopilot for transport aircraft, and (4) a hybrid flight simulator.