Alexandre Le Roch has received the ISAE-SUPAERO Foundation thesis prize for his work!

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Alexandre Le Roch has received the ISAE-SUPAERO Foundation thesis prize for his work!
2:53 min
Research

8 February 2021

Alexandre Le Roch has received the ISAE-SUPAERO Foundation thesis prize for his work!

A 2015 graduate of the Institut National des Sciences Appliquées in Rennes (INSA Rennes), Alexandre started his thesis at ISAE-SUPAERO in 2017 after spending some time at STMicroelectronics in Singapore. Vincent Goiffon, a professor at ISAE-SUPAERO, and Cédric Virmontois of the Centre National d’Etudes Spatiales (CNES) supervised his thesis, carried out with support from CNES and the French Alternative Energies and Atomic Energy Commission (CEA - Commissariat de l’Energie Atomique et aux Energies Alternatives).
His thesis work dealt with the study of the effects of nuclear and space radiations on CMOS image sensors, the goal being to improve space instruments and plasma diagnostics for nuclear fusion. More precisely, the study focused on the crystal defects induced by the radiation causing an increase in dark current. These studies contribute to improving our understanding of the physical principles at work in silicon affected by radiation.
Alexandre is the author or co-author of 11 publications. He has presented his work at the RADECS 2017, NSREC 2018, IISW 2019 and NSREC 2019 international conferences. He won various awards while he was working on this thesis. These include the international “Paul Phelps Award” grant from the NPSS chapter at IEEE (Institute of Electrical and Electronics Engineers) as well as the award for the best student article and best article at the RADECS 2019 conference. Alexandre also took part in opening the IEEE student branch at ISAE-SUPAERO in 2017 and presided over it until 2020.
Alexandre Le Roch defended his thesis in July 2020 and is currently working as a research engineer at ISAE-SUPAERO in collaboration with CNES. His research activities focus on the behavior of CMOS image sensors in contact with radiation for future missions that will explore the Jovian system (Jupiter), a very severe radiative environment. He will soon join the Goddard Space Flight Center (GSFC) at NASA to pursue this work on imaging systems’ behavior in contact with radiation. He sums up his thesis for you in 3 minutes flat
This thesis prize was presented by the ISAE-SUPAERO Foundation for the excellence of the research carried out and the outlook for the thesis’ applications.

SapienSapienS 2:53 min

A 2015 graduate of the Institut National des Sciences Appliquées in Rennes (INSA Rennes), Alexandre started his thesis at ISAE-SUPAERO in 2017 after spending some time at STMicroelectronics in Singapore. Vincent Goiffon, a professor at ISAE-SUPAERO, and Cédric Virmontois of the Centre National d’Etudes Spatiales (CNES) supervised his thesis, carried out with support from CNES and the French Alternative Energies and Atomic Energy Commission (CEA - Commissariat de l’Energie Atomique et aux Energies Alternatives).

His thesis work dealt with the study of the effects of nuclear and space radiations on CMOS image sensors, the goal being to improve space instruments and plasma diagnostics for nuclear fusion. More precisely, the study focused on the crystal defects induced by the radiation causing an increase in dark current. These studies contribute to improving our understanding of the physical principles at work in silicon affected by radiation.

Alexandre is the author or co-author of 11 publications. He has presented his work at the RADECS 2017, NSREC 2018, IISW 2019 and NSREC 2019 international conferences. He won various awards while he was working on this thesis. These include the international “Paul Phelps Award” grant from the NPSS chapter at IEEE (Institute of Electrical and Electronics Engineers) as well as the award for the best student article and best article at the RADECS 2019 conference. Alexandre also took part in opening the IEEE student branch at ISAE-SUPAERO in 2017 and presided over it until 2020.

Alexandre Le Roch defended his thesis in July 2020 and is currently working as a research engineer at ISAE-SUPAERO in collaboration with CNES. His research activities focus on the behavior of CMOS image sensors in contact with radiation for future missions that will explore the Jovian system (Jupiter), a very severe radiative environment. He will soon join the Goddard Space Flight Center (GSFC) at NASA to pursue this work on imaging systems’ behavior in contact with radiation. He sums up his thesis for you in 3 minutes flat

This thesis prize was presented by the ISAE-SUPAERO Foundation for the excellence of the research carried out and the outlook for the thesis’ applications.

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French SUPERCAM instrument records audio from INGENUITY's Fourth flight!
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French SUPERCAM instrument records audio from INGENUITY’s Fourth flight!

2:45 min
Research

10 May 2021

French SUPERCAM instrument records audio from INGENUITY’s Fourth flight! NASA/JPL-Caltech/LANL/CNES/CNRS/ISAE-SUPAERO

Perseverance was parked 80 metres from the small rotorcraft, which rose to five metres and then hovered before flying downrange for 133 metres and returning to its take-off and landing spot. SuperCam’s science microphone, developed by ISAE-SUPAERO, recorded the sound from the helicopter’s whirring rotors during the flight. The sound registered 84 hertz, equivalent to a low E note on the piano or a bass voice type.
“This is a wonderful surprise for the science team!” said Naomi Murdoch, a research scientist with ISAESUPAERO who is studying the data captured by the microphone. “Testing in a Mars atmosphere simulator to design this instrument and our sound propagation theories led us to believe the microphone would find it very difficult to discern sounds from the helicopter. As Mars’ atmosphere is very tenuous, it really attenuates sounds. So we needed a bit of luck to pick up the helicopter from this range. We’re thrilled to have obtained this recording, which is going to be a gold mine for our understanding of the planet’s atmosphere.”
Developed jointly by ISAE-SUPAERO and a consortium of laboratories attached to the French national scientific research centre CNRS and partner laboratories, coordinated by CNES, SuperCam’s microphone is derived from a consumer model adapted to withstand the Martian environment. The microphone is pursuing three science and technology goals of the Mars 2020 mission:
Study the sounds generated by laser impacts on Martian rocks to better understand their surface mechanical properties.
- Seek to gain new insights into surface atmospheric phenomena such as wind turbulence, dust devils and wind interactions with the rover, and now with the helicopter.
- Analyse the sound signature of the rover’s movements, for example when it is using its robot arm, driving on flat or rugged terrain, and operating its pumps.
The microphone was first turned on a few hours after Perseverance’s landing, picking up the first sounds on Mars from atmospheric turbulence. It is used daily in combination with laser-induced breakdown spectroscopy (LIBS) to analyse the chemical make-up of Martian rocks.
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