Saturday, November 19, 2011

How many g did the Rover lander survive on arrival at Mars?

The Rover lander weighed about 400 kg %26amp; landed at about 45 mph


It had 4 airbags with 6 lobes each to absorb the impact.


THe gravity on Mars is 38% of that on Earth|||The max acceleration experienced by Mars Exploration Rovers is about 8 "g" (Earth "g") according to this NASA report.

For a space system design course we had to design a mission to Saturn's moon Titan(and more!). The Lander had to touchdown in the Kraken methan sea. According to our simulations our lander would experience a maximum acceleration of about 15 "g". The difference compared to MERs is caused by differences in masses, cross sections(of heatshield and parachutes), atmospheric densities, and really important the initial atmospheric entry speed(and the ammount of fuel you can use to reduce atmospheric entry speed)

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