Paul F. Dietz wrote:

Dan DeConinck wrote:
Hello ,

Why is Mars rovers lifespan is only 90 days ?

Com Sats last years.
Pioneer is 20+ yrs and still talking.

The rover experiences large diurnal temperature changes,
and (being in an atmosphere) is considerably harder to
insulate.


I thought they they over insulated it and were having higher temperatures
in the vehicle than expected. Aren't they using aerogel insulation?

http://marsrovers.jpl.nasa.gov/missi...p_aerogel.html

Great isulator and extremely light. I don't think teperatures the problem.

Craig Fink