A high-temperature MEMS surface fence for wall-shear-stress measurement in scramjet flow

Chengyu Ma; Binghe Ma; Jinjun Deng; Weizheng Yuan; Zitong Zhou; Han Zhang

doi:10.3390/s17102412

A high-temperature MEMS surface fence for wall-shear-stress measurement in scramjet flow

Chengyu Ma, Binghe Ma, Jinjun Deng, Weizheng Yuan, Zitong Zhou, Han Zhang

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A new variant of MEMS surface fence is proposed for shear-stress estimation under high-speed, high-temperature flow conditions. Investigation of high-temperature resistance including heat-resistant mechanism and process, in conjunction with high-temperature packaging design, enable the sensor to be used in environment up to 400°C. The packaged sensor is calibrated over a range of ~65 Pa and then used to examine the development of the transient flow of the scramjet ignition process (Mach 2 airflow, stagnation pressure, and a temperature of 0.8 MPa and 950 K, respectively). The results show that the sensor is able to detect the transient flow conditions of the scramjet ignition process including shock impact, flow correction, steady state, and hydrogen off.

Original language	English
Article number	2412
Journal	Sensors
Volume	17
Issue number	10
DOIs	https://doi.org/10.3390/s17102412
State	Published - 22 Oct 2017

Keywords

High temperature
Scramjet flow
Surface fence
Wall shear stress

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10.3390/s17102412

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abstract = "A new variant of MEMS surface fence is proposed for shear-stress estimation under high-speed, high-temperature flow conditions. Investigation of high-temperature resistance including heat-resistant mechanism and process, in conjunction with high-temperature packaging design, enable the sensor to be used in environment up to 400°C. The packaged sensor is calibrated over a range of ~65 Pa and then used to examine the development of the transient flow of the scramjet ignition process (Mach 2 airflow, stagnation pressure, and a temperature of 0.8 MPa and 950 K, respectively). The results show that the sensor is able to detect the transient flow conditions of the scramjet ignition process including shock impact, flow correction, steady state, and hydrogen off.",

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author = "Chengyu Ma and Binghe Ma and Jinjun Deng and Weizheng Yuan and Zitong Zhou and Han Zhang",

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AU - Ma, Chengyu

AU - Ma, Binghe

AU - Deng, Jinjun

AU - Yuan, Weizheng

AU - Zhou, Zitong

AU - Zhang, Han

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AB - A new variant of MEMS surface fence is proposed for shear-stress estimation under high-speed, high-temperature flow conditions. Investigation of high-temperature resistance including heat-resistant mechanism and process, in conjunction with high-temperature packaging design, enable the sensor to be used in environment up to 400°C. The packaged sensor is calibrated over a range of ~65 Pa and then used to examine the development of the transient flow of the scramjet ignition process (Mach 2 airflow, stagnation pressure, and a temperature of 0.8 MPa and 950 K, respectively). The results show that the sensor is able to detect the transient flow conditions of the scramjet ignition process including shock impact, flow correction, steady state, and hydrogen off.

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KW - Wall shear stress

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A high-temperature MEMS surface fence for wall-shear-stress measurement in scramjet flow

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Keywords

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