NASA 1996 SBIR Phase I


PROPOSAL NUMBER : 96-1 01.02-4646

PROJECT TITLE : Adaptive Control of Air Turbo Ramjet

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

Accurate Automation proposes to develop an innovative adaptive propulsion system controller for Air Turbo Ramjet (ATR) Engines. One such engine is the Japanese ATREX [Tanatsugu, Sato, et al., 1994]. This poses a unique configuration with heat exchangers ahead of and behind the compressor. A Neural Network Controller will provide the required precise regulation of engine operating parameters. The precise gain scheduling required would make a conventional control system design difficult and costly; time consuming empirical studies would be necessary. We propose a direct adaptive algorithm to maintain precise control during changes in Mach number, altitude, angle of attack, throttle setting, and in the presence of parameter uncertainties and unforeseen circumstances. We also propose to develop a preliminary design of an unmanned flying testbed based on the LoFLYTE waverider. It will feature an innovative flowpath which may be reconfigured to allow integration of a range of engine designs. It will have the potential for low cost demonstration of new engine developments.
POTENTIAL COMMERCIAL APPLICATIONS
The Neural Network Adaptive controller will advance the state of the art in propulsion system control and will ensure that the United States stays commercially competitive with other nations. This technology will be applicable to hypersonic aircraft, including cruise missiles, tactical aircraft, strategic aircraft, and reconnaissance aircraft.
NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR
Lindley A. "Al" Carlton
Accurate Automation Corporation
7001 Shallowford Road
Chattanooga, TN 37421
NAME AND ADDRESS OF OFFEROR
Robert M. Pap
Accurate Automation Corporation
7001 Shallowford Road
Chattanooga, TN 37421