Accession Number : ADA118134

Title :   Design and Analysis of a Multivariable, Digital Controller for the A-7D Digitac II Aircraft and the Development of an Interactive Computer Design Program.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Porter,Douglas S

PDF Url : ADA118134

Report Date : Dec 1981

Pagination or Media Count : 106

Abstract : A multivariable error-actuated digital tracking controller is developed for the Mach 0.18 flight condition of the A-7D Digitac II aircraft using a singular perturbation method. The design is accomplished and simulated after the development of an interactive computer program named MULTI. The complete designed process is presented; a discussion of the robustness of the control law over a range of flight conditions and the effect of an aircraft flight control surface failure is also included. A more accurate aircraft model is required before further testing is accomplished to study the possibilities of other controller designs. The computer package is available to the engineering community.

Descriptors :   *Flight control systems, *Control theory, *Computer aided design, *Fighter aircraft, *Attack aircraft, Computer programs, Interactions, Aircraft models, Degrees of freedom, Multivariate analysis, Digital systems, user manuals, Programming manuals, Theses, Perturbations, Attack aircraft, Equations of motion, Aerodynamic stability, Mach number, Aircraft landings, Medium altitude, High altitude, Flight simulation

Subject Categories : Attack and Fighter Aircraft
      Computer Programming and Software
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE