Method for acquiring high-precision atmosphere data of aircraft flying across atmospheric layer

Abstract

The invention discloses a method for acquiring high-precision atmosphere data of an aircraft flying across an atmospheric layer. The method is based on conventional airspeed head measuring techniques and embedded atmosphere measuring measures, and atmosphere test data meeting the requirements of the aircraft flying across the atmospheric layer are accurately and rapidly acquired through system model creation, redundancy design, temperature compensation design, data fusion and the like. A redundancy design technique based on arrangement of pressure measuring points of multipoint-pressure-measurement pressure sensors and an effectiveness selection strategy of a three-point-method calculation model are mainly adopted, and reliability in data acquisition during breakdown of pressure taps is realized; a temperature compensation design technique is provided, so that the problem of pressure measurement change caused by air specific heat change at a high temperature is solved, and pressure measurement precision is improved; atmosphere data measuring measures based on different parameter measurement modes are adopted, data fusion is performed on measured data, and input is provided to a solution model of trans-atmospheric atmosphere data.

Description

Technical field [0001] The invention relates to a method for acquiring high-precision atmospheric data of a transatmospheric flying aircraft, which belongs to the technical field of aircraft navigation and control. Background technique [0002] Accurate measurement of aircraft air data plays an important role in flight control, measurement and safety. Air data research has been carried out in similar aircraft at home and abroad. Due to the development of domestic high-speed aircraft, the research on air data system is still mainly based on the air data system represented by the airspeed tube and differential pressure sensor used in the aviation low-speed aircraft. At the same time, domestic experts have also conducted research on embedded atmospheric technology, mainly from the structural layout of the system, calculation algorithm, test system design, compensation algorithm, simulation analysis and error correction algorithm, etc., and have made certain progress. However, the e...

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Problems solved by technology

Atmospheric data research has been carried out in similar aircraft at home and abroad. Due to the constraints of the development of domestic high-speed aircraft, the research on atmospheric data systems is still dominated by air data systems represented by pitot tubes and differential pressure sensors used in low-speed aviation aircraft. At the same time, domestic experts have also conducted research on embedded atmospheric technology, mainly from the aspects of system structure layout, calculation algorithm, test system design, compensation algorithm, simulation analysis and error correction algorithm, and have made some progress. However, the embedded atmospheric technology in a complete sense has not yet developed to the stage of comprehensive engineering application.

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