Method and instrumentation system for measuring airspeed and flow angle

摘要: An instrumentation system for measuring airspeed and angle-of-attack (AOA) is provided. The includes a sensor assembly, constant voltage anemometer, microprocessor assembly with software, an output device suitable powering conventional cockpit display or other speed AOA devices such as engine inlets stability augmenters. pair of orthogonal miniature cylinders embedded micro-thin multielement hot film sensors. Operation the by anemometer provides detection cylinder leading edge flow stagnation point oscillatory frequency. determination data; frequency data to calculate shed-vortex which converted data. solid-state, having no ports, diaphragms moving parts heated in normal operation.