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NASA's Mars 2020 is Get a Dose of Space Here on Earth



The NASA Mars 2020 spacecraft has completed acoustic and thermal
Vacuum testing (TVAC) is a Jet Propulsion Laboratory in Pasadena, California.
Acoustic test of the spacecraft that will carry the Mars 2020 stray to
soft soft in Jezero Crater on February 18, 2021, is the best Earthly
an approximation for what the spacecraft will suffer during the launch, where it will
encounter potentially destructive noise and vibration levels. TVAC
introduce vacuum and extreme temperatures of the space that could cause
components to malfunction or failure.

"Firstly
we blow it with sound to make sure nothing vibrates freely, ”says David Gruel, assembly, test and launch of Mars 2020 t
JPL operations manager. "Then, after a thorough examination, we have given it
in space by placing the spacecraft in this huge vacuum chamber we have here
JPL. We pumped out the atmosphere, then cool parts of it and cook others while testing
the entire spacecraft performance. "

Y
the first part of the process took place on April 12, when the spacecraft "stack" was bombed by sound under nitrogen pressure.
speakers in JPL Acoustic Test Chamber. The stack contains the aerosyl like
well like a stray stall (the real roamer goes final
assembly room in JPL High Bay cleaning room 1) and other components. With each other, they are assembled, or stacked, in the same configuration as when we launch towards Mars
July 2020.

"We tested the hardware components at random
noise spectrum in order to duplicate a launch environment, "said Andy
Rose, manager of the Environmental Test Facilities at JPL. "We reached sound
levels as high as 150 decibels, which would really fill the fillings if you
was inside the chamber at the time. "

Of course, the technicians
wait for each run of minutes before finishing the chamber door
explore the spacecraft in their room cleaning room (the spacecraft must remain free from contamination) t
stick to planetary
protection rules
). By the end of the day, the stack had been tested acoustically
and inspect them six times. The vehicle was then placed in clean bags in a clean antibacter
nylon movie and its transported back to the Bay space
1 cleaning room.

"For the acoustic test,"
the stack heat shield had been noted, but for the thermal vacuum test, it had
to be down, "said Gruel." The best place to turn over is the
cleaning room, where we have a plan to plan for that process
Stack to pass, the team recycled it and sent it out for thermal tests.

Inside
Cold

On April 26, the stack went
Space Space Simulator 25-feet, J-25-feet (8 meters-of-26)
Facility. The historic chamber has hosted a spacecraft by the NASA Mariner
tours from the beginning of the 1960s to Voyager and Cassini to all Mars rovers. Y
The 2020 stack was suspended from cables so that there was a cold interplanetary reality
a cruise could hit the spacecraft from all angles.

With the 16 tonne door closed, and
an almost vacuum environment was established. Then, as Mars 2020 test team
he looked, liquid nitrogen had flooded on the confused chamber walls to cool
it is to -200 degrees Fahrenheit (-129 degrees Celsius). To emulate the Sun
if Mars 2020 came across during its voyage, powerful xenon lamps
a number of floors beneath the chamber are illuminated, their light to refer to a
mirror at the top of the chamber and to reflect it on the spacecraft. Eight
days later the lamps were switched off, the atmosphere was reintroduced
chamber, and opened the door. Acoustic and thermal vacuum testing had been completed.

"This is the most comprehensive stress test you can put a spacecraft through here
on Earth, "said Gruel." We flew in our fake space environment
for a week and a day, check and re-check the performance of each board system a
sub-system. And everything looked great – good thing, because next
time this spacecraft is piling up a vacuum, it will be on its way to Mars
real. "

On 10 May, the pile returned again
Cleaning room The High Bay 1. Foot away, technicians were working on the 2,314-pound
Mars 2020 roaming (1,050-kilogram) will be part of the stack at launch. Y
a rover had more than 90% of the components that will be part of the inside already
of the chassis, the science instruments and the computers to sub-systems and t
electrical boxes to the arranged mix of electrical wiring connecting them
All.

Rover 2020 has a completely new series
of instruments, including sampling system that will collect samples from
Mars to return to Earth on subsequent trips. The mission will be launched
Cape Canaveral Air Force Station in Florida in July 2020 and land at Jezero
Crater on February 18, 2021.

The Mars 2020 Project at JPL manages roaming
development for the NASA Science Mission Directorate. NASA Launch Services
The program, which is located at Kennedy Space Space Center in Florida, is responsible
for launch control. Mars 2020 will launch from Cape Air Canaveral Air Force
Station in Florida.

For more information on Mars 2020 visit: t

https://www.nasa.gov/mars2020

For more information about NASA's exploration of Mars, visit:

https://www.nasa.gov/mars

Contact Media News

DC Agle
Jet Drive Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov

2019-098


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