Novel Non-Flammable Electrolytes for Lithium Batteries

Not Available This effort will develop fault- and damage-tolerant control for improving air vehicle survivability through identification of and recovery from multiple correlated failures of hardware redundant flight control sensors and actuators. The proposed concept builds on Athena's Fault Tolerant Control (FTC) technology, with proven demonstration in flight, real-time detection of single sensor and actuator failures. Athena's FTC achieves fault tolerance through analytic redundancy. The principles are based on deterministic non-linear control concepts and physical system dynamics, rather than genetic learning methods. The system model and failure detection filters are used to estimate the behavior of sensors and actuators, and compared to real measurements as the discriminating voting element. The proposed concept will resolve the ambiguity with multiple correlated hardware failures, while assuring stable and controllable authority throughout the flight envelope. Athena's elegant FTC implementation will enable an economical augmentation path onto current flight control systems. Subsonic air vehicles, whether strike system or commercial aircraft, are among the most vulnerable to man- portable air defense systems. The trend toward expensive survivability measures continues to strain diminishing defense budgets. Lower cost survivability options as those proposed here, are necessary to reverse this trend and assure maturation of an emerging generation of flight control systems.