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Composite pressure-temperature probe and airflow velocity calculation method thereof

A temperature probe and composite technology, applied in the direction of measuring fluid velocity by pressure difference, velocity/acceleration/impact measurement, aerodynamic test, etc., to achieve accurate design, improve measurement accuracy, enrich experiments and numerical data support Effect

Pending Publication Date: 2020-08-18
SHANGHAI MARITIME UNIVERSITY
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  • Description
  • Claims
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Problems solved by technology

At the same time, this theory is not applicable to adiabatic irreversible non-isentropic trans- and supersonic flows with shock wave structures

Method used

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  • Composite pressure-temperature probe and airflow velocity calculation method thereof
  • Composite pressure-temperature probe and airflow velocity calculation method thereof
  • Composite pressure-temperature probe and airflow velocity calculation method thereof

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Embodiment Construction

[0047] based on the following Figure 1 ~ Figure 6B , specifically explain the preferred embodiment of the present invention.

[0048] Such as figure 1 As shown, the present invention provides a composite pressure-temperature probe, comprising: a total pressure piezometer 8, a total temperature thermocouple 13, three near-end static pressure piezometers arranged inside the probe rod body , a remote static pressure measuring tube and a remote temperature thermocouple, the probe rod body includes a horizontal rod body 4 and a vertical rod body 5 arranged perpendicularly to each other, and the front end of the horizontal rod body 4 is connected to the static probe through a transition section 3 The pressure measurement section 2 and the static pressure measurement section 2 are connected to the pressure measurement head 1, and the end of the vertical rod body 5 is connected to the lead-out section 7, and a positioning block 6 is arranged on the side wall of the vertical rod body...

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Abstract

The invention discloses a composite pressure-temperature probe and an airflow velocity calculation method thereof. The probe comprises a total pressure measuring tube, a total temperature thermocoupleand three near-end static pressure measuring tubes which are arranged in a probe rod body, one strand of far-end static pressure measuring pipe and one strand of far-end temperature thermocouple arearranged. The probe rod body comprises a horizontal rod body and a vertical rod body which are perpendicular to each other, the front end of the horizontal rod body is connected with a static pressuremeasuring section through a transition section, the static pressure measuring section is connected with a pressure measuring head, the tail end of the vertical rod body is connected with a leading-out section, and a positioning block is arranged on the side wall, right opposite to the incoming flow direction, of the vertical rod body. The probe is generally used for measuring aerodynamic parameters such as the total temperature, the static temperature, the total pressure, the static pressure, the incoming Mach number and the flow speed of airflow under the condition of low-speed to supersonicincoming flow at the same time, can be used for wind tunnel experiments and aircraft flight parameter tests, and is high in measurement precision, high in compatibility and good in universality.

Description

technical field [0001] The invention relates to the field of pressure, temperature and speed testing, in particular to a composite pressure-temperature probe and a method for calculating airflow speed thereof. Background technique [0002] Total / static pressure probes are also known as pitot tubes, velocity tubes, and pitot tubes in the field of wind tunnel experiments. The measurement principle and probe structure of three-hole, five-hole, seven-hole and other porous pneumatic probes in the flow field testing technology are developed from the total / static pressure probe, which is a multi-hole pneumatic probe. The foundation and "matrix" of needle technology is the inspection standard for other flow testing methods in turbomachinery wind tunnel experiments, and it is one of the most important and convenient measurement tools used to calibrate working conditions such as incoming flow Mach number and angle of attack. one. The total / static pressure probe is also an important ...

Claims

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Application Information

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IPC IPC(8): G01D21/02G01M9/04G01M9/06G01P5/16G01P13/00
CPCG01D21/02G01M9/04G01M9/06G01P5/16G01P13/00
Inventor 钟兢军阚晓旭吴宛洋杨凌
Owner SHANGHAI MARITIME UNIVERSITY
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