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The rover of persistence records the sound of intelligence flying on Mars.

Mahasiswa Toto

Say Cheese on Mars: Perseverance's Selfie With Ingenuity – NASA's Mars  Exploration Program


NASA's Perseverance rover captured the xo first glimpse of the Ingenuity helicopter's blades as it flew through the rare Martian atmosphere.On Friday, the space agency released a new image taken by its companion Rotorcraft six-wheeled robot, taking its fourth flight on April 30, this time with an audio track.The nearly three-minute video kicks off with the sound of wind blowing through the Jezero Crater, Perseverance arriving in February on a mission to search for signs of ancient microbial life.The ingenuity then flies out and the blades can be heard faintly hissing as they spin at almost 2,400 rpm on the 872 ft (262 m) round-trip distance.Mission engineers were not sure they would pick up the flight noise at all, as Perseverance was parked at 262 feet (80 meters), perceived by the start and landing point.

Mars' atmosphere is about one percent of our planet's density, making everything much quieter than on Earth.This is quite a surprise," said David Mimoun, professor of planetary science at the Institut Superieur de l’Aeronautique et de l’Espace (ISAE-SUPAERO) in Toulouse, France and the science leader for SuperCam Mars microphones.We did tests and simulations that tell us that the microphones barely pick up the helicopter's sound, as the Martian atmosphere significantly reduces sound diffusion," he added.The SuperCam is an instrument aboard Perseverance that laser-zaps rocks from a distance to study their vapor with a device called a spectrometer that reveals their chemical composition.

It also comes with a recording microphone, which provides further insights into the target's physical properties, such as how difficult it is.Similarly, the new Ingenuity flight record, Mimoun explains, “will be a gold mine for our understanding of the Martian atmosphere.NASA made the sound, recorded in mono, easier to hear by separating the helicopter propeller pitch at 84 Hz, then lowering the sound at frequencies below 80 and above 90 Hz.They then increased the volume of the remaining signals.Soren Madsen, development manager of the Jet Propulsion laboratory Perseverance payload at NASA's Jet Propulsion, said the recording is an example of how mission instruments can work in tandem to increase our understanding of the red planet.




Topic starter Posted : 08/05/2021 3:14 am