Dynamics of constant temperature anemometers for the Martian Atmosphere

被引：0

作者：

Dominguez-Pumar, Manuel ^{[1
]}

Juarez, Manuel de la Torre ^{[2
]}

Navarro, Sara ^{[3
]}

Marin, Mercedes ^{[3
]}

Gomez-Elvira, Javier ^{[3
]}

Rosero-Pozo, Carlos ^{[1
]}

Manyosa, Xavier ^{[1
]}

Bermejo, Sandra ^{[1
]}

Rodriguez-Manfredi, Jose Antonio ^{[3
]}

机构：

[1] Univ Politecn Cataluna, UPC Barcelona, BarcelonaTech, Barcelona, Spain

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Ctr Astrobiol INTA CSIC, Torrejon De Ardoz, Madrid, Spain

来源：

MEASUREMENT | 2025年 / 239卷

基金：

美国国家航空航天局;

关键词：

Constant temperature anemometry; Mars atmosphere; Wind sensor; Diffusive representation; Laplace transform; 3D WIND SENSOR; LASER ANEMOMETER; MARS; INSTRUMENT;

D O I：

10.1016/j.measurement.2024.115427

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The objective of this paper is to understand the limits on the response time generated by the thermal dynamics of the Martian wind sensor of the MEDA instrument, working under Constant Temperature Operation (CTO). This technology has been flown aboard the Mars Science Laboratory, InSight, and Mars 2020. It will be shown that active control thermal anemometry enables a time response to wind fluctuations faster than the time constants defined by the thermal inertia of the sensor components. It will also be shown that the temperature redistributions on the temperature-uncontrolled parts of the supporting structure impose a limit on the bandwidth of the sensor. We present a model of the MEDA hot film anemometers describing what parameters control their dynamical response, why wind tunnel testing confirmed them to be faster than 1 s, and criteria to select materials that reduce the response time to approach 0.2 s.

引用

页数：15

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