FLIGHT AIR DATA MEASURING SYSTEM

摘要

The present invention relates to aviation. The proposed air data system includes pitot pressure probes with sensing ports, anti-icing electric heaters, conduits, pressure transducers, outer air temperature sensors, and computer; the above units and components are incorporated in a single streamlined housing attached to the aircraft and composed of axisymmetric surfaces. The system for air data acquisition is autonomous and interacts with the aircraft and its subsystems through only the information exchange channels and power supply lines via electric connectors. To make the system more autonomous, its housing also incorporates electric adapters. To expand the measurement range, to save structural weight and diminish the necessary number of pressure measurement channels, the system includes pitot pressure probes which are the faceted pins protruding from the housing and having the sensing ports between edges. To reduce anti-icing system power requirements and simplify the system design, the housing surface or its part can be made of hydrophobic materials. To expand flight parameter measurement ranges from -180 to +180 degrees for both angle of attack and sideslip angle (thus covering the entire sphere), the system can include a set of independent subsystems; in each of them the units and components are housed in an individual streamlined housing attached to aircraft components, and the air data subsystems are autonomous and interact with the aircraft and the other similar subsystems through the information exchange and power supply lines only. In case a system failure is detected, the inoperative system may be simply replaced with an identical operative system.