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I'm Avi Okon, the lead hardware engineer for
the drill, and this is your Curiosity Rover

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Report.

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Here we are with Curiosity's Earth-bound test
double in the Mars Yard here at JPL.

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Curiosity has been repositioned at a second
rock target. That's where she will sample

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it with her drill. This second sample is intended
to confirm the results from her first drilling,

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which is where we found evidence of an ancient
environment favorable to microbial life.

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After drilling, Curiosity will process and
deliver the sample to her analytical instruments.

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A lot of you may have been wondering how we
get sample from the drill or the scoop into

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the instruments back in the rover.
So to collect the sample from the rock, we

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don't just\hpick up, drill into the rock and
drop off the sample directly. It's a little

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more complicated than that.

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Now we'll use this model of the drill bit
assembly to illustrate.

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As we drill the hole, the powder gets conveyed
up this tube and gets stored in the chamber

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inside the drill bit assembly.

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Then to move the powder out of the drill bit,
we use the robotic arm wrist and turret joint

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and the vibration caused by the drill percussion
mechanism to move the sample like so: Tap

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tap tap tap tap.

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We continue this motion to deliver it to the
CHIMRA, which is the sample, processing and

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delivery device.

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The drill sample comes up through the sample
transfer tube into the chambers into CHIMRA.

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As we open her up, we could see where the
sample comes in from the drill, then we would

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send the sample up to the scoop to take a
picture of it. Once we do that, we then move

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the sample through the sieve and into the
portion box to create a portion for the instruments

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inside the belly of Curiosity. And those portions
are the size of a baby aspirin tablet.

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To get the sample to the instruments is similar
to this puzzle game that I have on my phone,

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where we move the sample through a series
of chambers using gravity and vibration.\h\h

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Curiosity uses gravity instead of mechanisms
to move sample because there are fewer moving

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parts.

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So now I'll show you using these BBs in this
model - how we move the sample from the reservoir

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into the scoop:

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Rattle rattle rattle

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And there it is.\h

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Curiosity could do this a lot better than
I can.

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Now the sample is in the scoop. It still has
a long way to go to get into the sieve and

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into the portion box to be delivered into
SAM and CheMin in the belly of the rover.