DOE scientists are using the Advanced Light Source to study atmospheric reentry heat shields, including PICA, the type currently used by NASA and SpaceX. Which of the following best describes PICA?
W) A silicone-based heating pad
X) A highly-thermally-conductive epoxy
Y) A carbon fiber that slowly ablates
Z) Titanium shingles with heat sinks
✔️Answer:Y) A CARBON FIBER THAT SLOWLY ABLATES
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