<! – -> By NASA // October 28, 2018 <! – -> fastest inflation in history of a parachute…
By NASA // October 28, 2018
ABOVE VIDEO: Watch as NASA tests a new parachute for landing the March 2020 rover on the Red Planet. NASA) – In the early hours of Sept. 7, NASA broke a world record.
Less than 2 minutes after the launch of a 58-foot-tall (17.7-meter) Black Brant IX sounding rocket, a payload separated and began to dive back through Earth’s atmosphere. When onboard sensors determined the payload had reached the appropriate height and Mach number (Mach 1.8), the payload deployed a parachute.
Within four-tenths of a second, the 180-pound parachute was billowed out of being a solid cylinder two being fully inflated.
It was the fastest inflation in history of a parachute this size and created a peak load of almost 70,000 pounds of force.
This was not just any parachute. NASA’s state-of-the-art March 2020 rover on the Red Planet in February 2021. The Jet Propulsion Laboratory’s Advanced Supersonic Parachute Inflation Research Experiment (ASPIRE) project conducted a series of sounding rocket tests to help determine which parachute design to use on the March 2020 mission.
Two different parachutes were evaluated during ASPIRE. De eerste test vlucht droeg bijna een exacte kopie van de parachute die gebruikt werd om NASA’s Mars Science Laboratorium succesvol op de Red Planet in 2012 te zetten. De tweede en derde tests droegen chutes of soortgelijke afmetingen maar versterkte met sterkere materialen en stitching.
On Oct. 3, NASA’s March 2020 mission management and members of its Entry, Descent, and Landing team with JPL in Pasadena, California, and determined that the strengthened parachute had passed its tests and was ready for its Marchian debut.
“Mars 2020 will be carrying the heaviest payload yet to the surface of Mars, and like all our previous Mars missions, we only have one parachute and it has to work,” said John McNamee, Project Manager of Mars 2020 at JPL.
“The ASPIRE tests have shown in remarkable detail how our parachute will react when it is first deployed into a supersonic flow high above Mars. And let me tell you, it looks beautiful. “
The 67,000-pound (37,000-kilogram) load was the highest ever survived by a supersonic parachute. Det er om en 85-procent højere belastning end hvad forskerne ville forvente Mars 2020-parachute til møtet under dets deployment i Mars’ atmosfære.
“Earth’s atmosphere near the surface is much denser than that near the Martian surface, about 100 times , “Said Ian Clark, the test’s technical lead from JPL. “But high up – around 23 miles (37 miles) – the atmospheric density on Earth is very similar to 6 miles above Mars, which happens to be the altitude that March 2020 will deploy its parachute.”
With The ASPIRE tests complete, the endeavors of Clark and his compatriots will be confined to the lower part of the stratosphere for the time being. But it does not mean the fun times are over.
“We are all about helping 2020, its landing is 28 months from now,” said Clark.
“I kan ikke komme til å skyte rakettene til kanten af rummet for en stund, men når det kommer til Mars – og når det kommer til å komme dit og komme dit sikkert – det er alltid spennende utfordringer å jobbe rundt her.”
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