Evaluation of Improved Engine Compartment Overheat Detection Techniques

摘要

A study was conducted to evaluate the feasibility of utilizing infrared (IR) sensor technology to detect leaks from failed aircraft bleed ducts. Improved overheat detection system requirements were defined and detection concepts were formulated based on these requirements. An IR detection concept was shown to exhibit potential for improvement over other concepts formulated and existing cable type detection elements. A nacelle/bleed duct simulator was designed and fabricated in order to conduct tests of IR detection concepts. Radiation detection instrumentation was designed for utilizing the IR instrumentation and a Systron-Donner element to detect simulated bleed leaks at three different flight conditions. The test data was analyzed to evaluate the feasibility of IR detection techniques and the relative performance of the IR techniques with respect to cable-type elements was determined.