Numerical study of lander effects on DREAMS scientific package measurements

Chiodini, Sebastiano; Colombatti, Giacomo; Pertile, Marco; Debei, S.

doi:10.1109/metroaerospace.2014.6865964

Cited by 4 publications

(4 citation statements)

References 16 publications

(16 reference statements)

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“…In the future, to improve the accuracy of the noise estimations, more detailed Computational Fluid Dynamics simulations could be performed to model the wind-lander interactions (e.g., Chiodini et al 2014;Gendron et al 2010). However, the atmospheric boundary layer is itself fully and highly turbulent, and the lander induced eddies are just one component of the full spectrum that the boundary layer itself presents.…”

Section: Parametermentioning

confidence: 99%

Evaluating the Wind-Induced Mechanical Noise on the InSight Seismometers

et al. 2016

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The SEIS (Seismic Experiment for Interior Structures) instrument onboard the InSight mission to Mars is the critical instrument for determining the interior structure of Mars, the current level of tectonic activity and the meteorite flux. Meeting the performance requirements of the SEIS instrument is vital to successfully achieve these mission objectives. Here we analyse in-situ wind measurements from previous Mars space missions to understand the wind environment that we are likely to encounter on Mars, and then we use an elastic ground deformation model to evaluate the mechanical noise contributions on the SEIS instrument due to the interaction between the Martian winds and the InSight lander. Lander mechanical noise maps that will be used to select the best deployment site for SEIS once the InSight lander arrives on Mars are also presented. We find the lander mechanical noise may be a detectable signal on the InSight seismometers. However, for the baseline SEIS deployment position, the noise is expected to be below the total noise requirement >97% of the time and is, therefore, not expected to endanger the InSight mission objectives.

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Section: Parametermentioning

confidence: 99%

Evaluating the Wind-Induced Mechanical Noise on the InSight Seismometers

et al. 2016

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“…In addition, from the retrieved titanium structure time constant, the secondary thermometer will support the correction of errors introduced by solar radiation contribution on the primary sensor. Chiodini et al (2014) showed that the radiative contribution of the thermal flux on the sensor is lower than the 30% at noon conditions (the worst from this point of view) with a wind of 1m/s and that this contribution decreases to 20% with a 5 m/s wind.…”

Section: Marstemmentioning

confidence: 92%

“…Missus allowed the validation of the mathematical model (even of sun irradiance effects) and the tuning of the electrical current profile in order to maximize sensitivity/self-heating ratio and the overall SNR. To infer MarsTEM performance from MISSUS experiment results, the comparison between Earth and Mars potential temperature was performed (Chiodini et al, 2014).…”

Section: Marstemmentioning

confidence: 99%

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The DREAMS Experiment Onboard the Schiaparelli Module of the ExoMars 2016 Mission: Design, Performances and Expected Results

et al. 2018

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The first of the two missions foreseen in the ExoMars program was successfully launched on th March 2016. It included the Trace Gas Orbiter and the Schiaparelli Entry descent and landing Demonstrator Module. Schiaparelli hosted the DREAMS instrument suite that was the only scientific payload designed to operate after the touchdown. DREAMS is a meteorological station with the capability of measuring the electric properties of the Martian atmosphere. It was a completely autonomous instrument, relying on its internal battery for the power supply. Even with low resources (mass, energy), DREAMS would be able to perform novel measurements on Mars (atmospheric electric field) and further our understanding of the Martian environment, including the dust cycle. DREAMS sensors were designed to operate in a very dusty environment, because it was designed to land on Mars during the dust storm season (October 2016 in Meridiani Planum). Unfortunately, the Schiaparelli module failed part of the descent and the landing and crashed onto the surface of Mars. Nevertheless, several seconds before the crash, the module central computer switched the DREAMS instrument on, and sent back housekeeping data indicating that the DREAMS sensors were performing nominally. This article describes the instrument in terms of scientific goals, design, working principle and performances, as well as the results of calibration and field tests. The spare model is mature and available to fly in a future mission.

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A novel soft intelligent calibrator for low-velocity hot bulb anemometers

Zhang

Zhong

et al. 2015

2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)

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Numerical study of lander effects on DREAMS scientific package measurements

Cited by 4 publications

References 16 publications

Evaluating the Wind-Induced Mechanical Noise on the InSight Seismometers

Evaluating the Wind-Induced Mechanical Noise on the InSight Seismometers

The DREAMS Experiment Onboard the Schiaparelli Module of the ExoMars 2016 Mission: Design, Performances and Expected Results

A novel soft intelligent calibrator for low-velocity hot bulb anemometers

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