For the primary time, a spacecraft on one other planet has recorded the sounds of a separate spacecraft. NASA’s Perseverance Mars rover used certainly one of its two microphones to hear because the Ingenuity helicopter flew for the fourth time on April 30, 2021. A brand new video combines footage of the solar-powered helicopter taken by Perseverance’s Mastcam-Z imager with audio from a microphone belonging to the rover’s SuperCam laser instrument.
The laser zaps rocks from a distance, learning their vapor with a spectrometer to disclose their chemical composition. The instrument’s microphone information the sounds of these laser strikes, which give data on the bodily properties of the targets, similar to their relative hardness. The microphone also can file ambient noise, just like the Martian wind.
With Perseverance parked 262 toes (80 meters) from the helicopter’s takeoff and touchdown spot, the rover mission wasn’t positive if the microphone would decide up any sound of the flight. Even throughout flight, when the helicopter’s blades spin at 2,537 rpm, the sound is significantly muffled by the skinny Martian environment. It’s additional obscured by Martian wind gusts throughout the preliminary moments of the flight. Pay attention intently, although, and the helicopter’s hum will be heard faintly above the sound of these winds.
“This can be a excellent shock,” stated David Mimoun, a professor of planetary science at Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO) in Toulouse, France, and science lead for the SuperCam Mars microphone. “We had carried out checks and simulations that instructed us the microphone would barely decide up the sounds of the helicopter, because the Mars environment damps the sound propagation strongly. Now we have been fortunate to register the helicopter at such a distance. This recording will likely be a gold mine for our understanding of the Martian environment.”
Scientists made the audio, which is recorded in mono, simpler to listen to by isolating the 84 hertz helicopter blade sound, lowering the frequencies beneath 80 hertz and above 90 hertz, and rising the quantity of the remaining sign. Some frequencies have been clipped to carry out the helicopter’s hum, which is loudest when the helicopter passes via the sphere of view of the digicam.
“That is an instance of how the completely different payload instrument suites complement one another, leading to data synergy,” stated Soren Madsen, Perseverance payload improvement supervisor at NASA’s Jet Propulsion Laboratory in Southern California. JPL constructed Perseverance in addition to Ingenuity and operates each of them. “On this specific case, the microphone and video allow us to observe the helicopter as if we’re there, and extra data, such because the Doppler shift, confirms particulars of the flight path.”
SuperCam is led by the Los Alamos Nationwide Laboratory in New Mexico, the place the instrument’s physique unit was developed. That a part of the instrument consists of a number of spectrometers, management electronics, and software program. The mast unit, together with the microphone, was developed and constructed by a number of laboratories of the CNRS (French analysis middle), ISAE-Supaéro, and French universities underneath the contracting authority of the Centre Nationwide d’Etudes Spatiales (the French area company). Calibration targets on the rover deck are offered by Spain’s College of Valladolid.
Perseverance rover captures the sounds of driving on Mars
Perseverance Mars rover captures video, audio of fourth Ingenuity flight (2021, Might 7)
retrieved eight Might 2021
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