Posted on Feb 7, 2021
7 Minutes of Terror! How will the Perseverance Rover Land on Mars?
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7 MINUTES OF TERROR!!! On February 18th, the NEW Perseverance Which will enter the Martian Atmosphere at 20,000 KMs per hour or 12,500 mph and a temperature of 1300°C or 2,300°F..., so like when the Apollo missions took place, their habitation and landing craft had to go through this same process, with a HEAT SHIELD protecting the craft and its crew during descent... The same holds true for Perseverance, which is the "Passenger" in this case...
Watch and listen, Full Screen with sound up for the best experience.... It is pretty awesome!
"In this video, we will discuss the Entry, Descent, and Landing sequence for the Mars 2020 mission. Mars 2020 consists of the Perseverance Rover and the Ingenuity Helicopter. After traveling through space for seven months, Percy will make it to Mars. As it enters the atmosphere, it will begin the seven-minute landing sequence. Called the 7 minutes of terror. The first part is Entry, as the spacecraft enters the Martian atmosphere. Using its heat shield and aeroshell, it will slow the spacecraft down. Meanwhile, thrusters and counterweights are used to make sure it remains on track.
After three minutes, the new Range Trigger technique will help NASA decide when to deploy the supersonic parachutes. While descending, the heat shield is dropped, and downward-facing cameras help detect the best locations to land Percy. Soon after, the powered descent phase begins, where the retrorockets slow the spacecraft further. Then just above the surface, using the Mars sky crane, the rover will safely touchdown on Mars." From the "Martian Wolf YouTube Channel"
Enjoy!
Kerry
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Watch and listen, Full Screen with sound up for the best experience.... It is pretty awesome!
"In this video, we will discuss the Entry, Descent, and Landing sequence for the Mars 2020 mission. Mars 2020 consists of the Perseverance Rover and the Ingenuity Helicopter. After traveling through space for seven months, Percy will make it to Mars. As it enters the atmosphere, it will begin the seven-minute landing sequence. Called the 7 minutes of terror. The first part is Entry, as the spacecraft enters the Martian atmosphere. Using its heat shield and aeroshell, it will slow the spacecraft down. Meanwhile, thrusters and counterweights are used to make sure it remains on track.
After three minutes, the new Range Trigger technique will help NASA decide when to deploy the supersonic parachutes. While descending, the heat shield is dropped, and downward-facing cameras help detect the best locations to land Percy. Soon after, the powered descent phase begins, where the retrorockets slow the spacecraft further. Then just above the surface, using the Mars sky crane, the rover will safely touchdown on Mars." From the "Martian Wolf YouTube Channel"
Enjoy!
Kerry
______________________________________________________________________________
NASA
Space
Physics
Science
Edited 4 y ago
Posted 4 y ago
Responses: 9
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Sgt (Join to see)
If it survives the landing...note the following:
The rover's power generator (MMRTG) has a mass of 45 kilograms (99 lb) and uses 4.8 kilograms (11 lb) of plutonium dioxide as the source of steady supply of heat that is converted to electricity. The electrical power generated is approximately 110 watts at launch with little decrease over the mission time. Two lithium-ion rechargeable batteries are included to meet peak demands[clarification needed] of rover activities when the demand temporarily exceeds the MMRTG's steady electrical output levels. The MMRTG offers a 14-year operational lifetime, and it was provided to NASA by the US Department of Energy. Unlike solar panels, the MMRTG provides engineers with significant flexibility in operating the rover's instruments even at night and during dust storms, and through the winter season.
The rover's power generator (MMRTG) has a mass of 45 kilograms (99 lb) and uses 4.8 kilograms (11 lb) of plutonium dioxide as the source of steady supply of heat that is converted to electricity. The electrical power generated is approximately 110 watts at launch with little decrease over the mission time. Two lithium-ion rechargeable batteries are included to meet peak demands[clarification needed] of rover activities when the demand temporarily exceeds the MMRTG's steady electrical output levels. The MMRTG offers a 14-year operational lifetime, and it was provided to NASA by the US Department of Energy. Unlike solar panels, the MMRTG provides engineers with significant flexibility in operating the rover's instruments even at night and during dust storms, and through the winter season.
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PO2 (Join to see)
Sgt (Join to see) 14 years! We should receive lots of valuable data from the mission. Thanks Kerry.
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SPC Michael Terrell
Sgt (Join to see) - Electric motors draw more than their rated run current when they are first energized. It drops off as the motor starts to generate back EMF, until it reaches its rated running current.
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Sgt (Join to see)
Probably the most important Rover sent to Mars... as it is the largest, and the most sophisticated, with the most equipment complement, including a 'Helicopter' to test whether there is enough atmosphere to support helo flight, which, if it works, will provide great insight to the Rover about hazards to avoid way ahead of time, considering there is an 11 minute delay in telemetry from Earth...
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1SG Steven Imerman
Sgt (Join to see) - The 11 minutes is the operative factor with the landing, that thing is on its own once it hits the upper atmosphere. This is one mission I would really like to see go off without a hitch or glitch. I always feel that way, but the stakes are higher than usual on this one.
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