I think, by now, we have all heard about the issues with the Mars Insight Heat probe and its uncanny ability to resist digging much deeper than its own length.
Recently after penetrating about 10" into the Mars soil, it somehow reversed itself and came back out almost to the point of plopping down outside the original hole.
We have not heard much update on plans to try reinserting the probe and encouraging further penetration in a bid to salvage some of the experiment. But looks like the only option is to use the 'scoop' to try and right the probe and then put pressure on its butt-end to encourage forward penetration.
It's not an encouraging circumstance for sure trying to remotely get the scoop & pressure directly on the probe.
Looking at the experiment, I am sure greater minds thought of this but why didn't the design include some reverse oriented wedges or spring loaded 'catches' to prevent backward movement once the probe went through a hammer cycle? The side edges (not much would be needed) would hook into the sides of the soil and give resistance to backward movement of the probe when it went through a hammer cycle.
Too late now but I wonder why such a design feature was rejected?
Not much new info since the probe backed itself mostly out of its hole. Experiment might be a lost cause at this point as the scoop could only offer push-back resistance until the probe got below soil level and then we likely would return to the same issue with the probe hammering in place without advancement.
Pesse (Probe hammering uselessly against the metal top of a buried Martian Biodome?) Mist
Edited by Pess, 07 December 2019 - 11:03 AM.