Author Topic: Cracked Heat Shield for 2020 Rover?  (Read 1776 times)

Offline redliox

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Cracked Heat Shield for 2020 Rover?
« on: 04/27/2018 11:00 PM »
Apparently JPL had an inccident:

http://spacenews.com/cracked-heat-shield-wont-delay-mars-2020-mission/
Quote
In a statement released late April 26, NASAs Jet Propulsion Laboratory said a structure that is part of the heat shield for the Mars 2020 spacecraft cracked during testing earlier in the month at a Lockheed Martin facility near Denver.

The fracture in the composite structure is located near the outer edge of the shield and spans its circumference, according to the JPL statement. It was detected April 12 after the heat shield underwent a week of testing at the Lockheed facility where it was subjected to forces 20 percent above those expected in a normal entry into the Martian atmosphere.

Given 2020 was supposed to duplicate almost all of Curiosity's systems should it be a concern when this happens?
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Offline eeergo

Re: Cracked Heat Shield for 2020 Rover?
« Reply #1 on: 04/28/2018 01:48 AM »
The article also specifies this was a spare heat shield constructed for MSL's campaign, so it is around 10 years old. Maybe the PICA was too "cured"?
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Offline hop

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Re: Cracked Heat Shield for 2020 Rover?
« Reply #2 on: 04/28/2018 04:18 AM »
The article also specifies this was a spare heat shield constructed for MSL's campaign, so it is around 10 years old. Maybe the PICA was too "cured"?
My impression from the NASA release (https://www.nasa.gov/feature/jpl/results-of-heat-shield-testing/) is that the problem is in structure rather than the TPS.

Quote
Once the new structure is complete and tested, the thermal protection tiles will then be installed for flight, and the heatshield and other components of the aeroshell will be delivered to NASAs Kennedy Space Center in Florida for final spacecraft processing prior to launch.

Tags: Mars 2020