An Airborne Scramjet Pressure Measurement System

Abstract

The invention provides an airborne scramjet pressure measurement system, which mainly includes an electronic pressure scanning valve, a pressure acquisition control module, a back pressure device and an absolute pressure sensor; the back pressure device provides reference pressure for the electronic pressure scanning valves 7 and 8 The absolute pressure sensor collects the pressure of the back pressure device, and the output signal of the electronic pressure scanning valve is sent to the pressure acquisition control module; the back pressure device is composed of an absolute pressure sensor interface, a back pressure device barrel and an impermeable steel pipe; the back pressure device barrel The inside is sealed with a local atmospheric pressure or evacuated; one end of the absolute pressure sensor interface is connected to the back pressure device cylinder, and the other end is connected to the absolute pressure sensor; one end of the stainless steel tube is connected to the back pressure device cylinder, and the other end is connected to the electronic pressure scanner through the pressure measuring pipeline valve. The invention is small in volume, light in weight and high in precision, helps to increase the proportion of payload in the aircraft structure, and provides an effective means of pressure measurement for hypersonic autonomous flight.

Description

An airborne scramjet pressure measurement system Technical field The present invention relates to aerospace telemetry remote sensing field, particularly, relate to a kind of airborne scramjet pressure measurement system. Background technique Mainly be used in the attitude control of spacecraft and aerospace vehicle, high-speed aircraft, jet engine in aerospace field The pressure measurement of heat-resistant cavities and surfaces of aircraft, rockets, satellites, etc., its performance is determined by the measurement range, measurement accuracy, nonlinear and working temperature. Aerospace field working environment is harsher, usually comprises thermal erosion, mainly refers to high-temperature environment; Mechanical erosion, mainly Refers to high load, vibration and impact, etc.; chemical corrosion, mainly refers to the environment with corrosive media, etc. Along with the rapid development of measurement technology, high-precision fluid dynamics test has propose...

AI Technical Summary

Problems solved by technology

And the pressure measurement system volume that is currently applied in aerospace field is generally too large, is unfavorable for integrated integration,

Or can not meet the needs of multi-point synchronization measurement

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