Accession Number : AD0857616

Title :   Self-Organizing Control of Advanced Turbine Engines.

Descriptive Note : Final technical rept. 1 May 68-31 May 69,

Corporate Author : ADAPTRONICS INC MCLEAN VA

Personal Author(s) : Barron, Roger L. ; Cleveland, Dixon ; Orr, Elsie C. ; Harner, Kermit I. ; Schneider, Roy W.

Report Date : AUG 1969

Pagination or Media Count : 209

Abstract : This report presents results of a one-year research program to apply techniques of self-organizing control to advanced turbopropulsion systems. Emphasis has been placed on optimization of fuel consumption during aircraft cruise missions by producing maximum cycle and propulsive efficiency. A nonlinear single-spool turbojet engine with variable exhaust nozzle and turbine inlet areas has been simulated. The self-organizing controller adjusts these areas on-line to achieve thrust specific fuel consumption within 0.2 percent of the minimum for any prescribed thrust level. Convergence to the minimum is accomplished in approximately 30 sec., starting with both parameters far from their optimum values. Closed-loop thrust control is effected by fuel metering. Thrust perturbations produced by the adaptation process have peak magnitudes of approximately ten pounds. Engine operating boundaries are treated as a priori functions of fuel flow rate, burner pressure, speed, and turbine inlet area. (Author)

Descriptors :   (*TURBOJET ENGINES, CONTROL SYSTEMS), VARIABLE AREA NOZZLES, TURBOJET EXHAUST NOZZLES, ADAPTIVE CONTROL SYSTEMS, FUEL CONSUMPTION, SIMULATION, AIRCRAFT ENGINES, OPTIMIZATION, EFFICIENCY, THRUST.

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE