Bruce Moomaw
2953 Oakleaf Dr.
Cameron Park, CA 95682
Phone: (530) 677-8353
E-mail: [EMAIL PROTECTED]
Specialties: None, really.
(I have no actual formal degree in any of the physical sciences, but I do
have whatever expertise I've picked up through four decades of fanatical
personal study of s
On Fri, 1 Nov 2002 [EMAIL PROTECTED] wrote:
> I know some debates have surfaced over batteries. The pro's for
> batteries as I see them are:
[snip]
I would strongly urge people to *read* the materials available
on the web about previous cryobot efforts.
You are *NOT* going to get 400+ kW out
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, October 31, 2002 10:09 PM
Subject: Heating and Power
I know some debates have surfaced over batteries. The pro's for
batteries as I see them are:
Provide a weight near the nose section for gravit
- Original Message -
From: "Leonard DiFrancesco" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, October 31, 2002 5:53 PM
Subject: Heat
>
> Consideration of the amount of heat required to melt the ice question:
> In the calculation of the amount of heat required was it consi
- Original Message -
From: LARRY KLAES
To: europa
Sent: Thursday, October 31, 2002 8:06 AM
Subject: What about a Slam Dunk approach to Icepick?
Remember the plans for the CRAF probe over a decade ago
that was going to send a spike-shaped probe into a comet
to penetrate its surface
- Original Message -
From: LARRY KLAES
To: europa
Sent: Wednesday, October 30, 2002 7:16 AM
Subject: Could Mars life have landed on Europa as well?
___
There's a very interesting and important scientific issue connected with
this. The idea that meteorite exchange
Hibai Unzueta, 21 years old.
Bilbao. Basque Country (spain)
Telecommunications (electrical) Engineering student
at EHU/UPV University of the Basque Country.
Performing 4th year of a five year degree.
Doing lab work on the TCN international
standar for a realisation of a train communication
networ
In a message dated 11/1/2002 12:42:08 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
Bruce Moomaw
2953 Oakleaf Dr.
Cameron Park, CA 95682
Phone: (530) 677-8353
E-mail: [EMAIL PROTECTED]
Specialties: None, really.
(I have no actual formal degree in any of the physical sciences, but I do
h
In a message dated 11/1/2002 12:46:01 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
On Fri, 1 Nov 2002 [EMAIL PROTECTED] wrote:
> I know some debates have surfaced over batteries. The pro's for
> batteries as I see them are:
[snip]
I would strongly urge people to *read* the materials ava
In a message dated 11/1/2002 12:49:04 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
What you're talking about is a perpetual-motion machine -- in the very
process of absorbing part of the moving water's kinetic energy to generate
electricity, you're naturally going to slow the water down a
In a message dated 11/1/2002 12:55:48 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
The pressure of the ice will be similar to that which the probe would
encounter in a comparably deep layer of liquid water -- actually slightly
less, since ice's density is only 97% that of water. Since Eur
In a message dated 11/1/2002 1:22:24 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
Actually, it's a rather intereting one, and the mechanism involved wouldn't
have to be nearly as complex as the one you propose. All you have to do is
arrange for the cryobot, once its descent is complete, t
In a message dated 11/1/2002 2:21:15 AM Alaskan Standard Time, [EMAIL PROTECTED] writes:
Hibai Unzueta, 21 years old.
Bilbao. Basque Country (spain)
Telecommunications (electrical) Engineering student
at EHU/UPV University of the Basque Country.
Performing 4th year of a five year degree.
Doing l
No, no, please - no more debates on the naming. I think everyone here can differentiate when one is talking about the model version as opposed to the real probe. If one must, you can call the model Earth Icepick and the real probe Europa Icepick, but I must confess I at least am done bantering
Objective:
Come up with a radio controlled working model, that can bore 500'
into an ice sheet, and leave a trail of 5 transponders at intervals of 100'
feet.
The principle purpose is not to develop new technology, but to use
extremely cheap, off the shelf parts to make a publicit
Charting Course: Life in the Universe(Date: 2002-11-01 01:13:01) Topic: Missions URL: http://www.astrobio.net:8080/news/modules.php?op=modload&name=News&file=article&sid=303 You can read interesting articles on Astrobiology Magazine http://www.astrobio.net:8080/news/
I was thinking that we could enhance the vehicle's ability to negotiate
changes in direction by giving it a head that swiveled. The ability to bend
in the middle would also be helpful.
I keep imagining that the Europa Icepick could ultimately take on a
snake-like form. The head would do the driv
It's an elegant notion, but articulation is component-intensive and
failure-prone.
Also, it is most probably unnecessary. Directional control could come via
preferential heating or jetting coupled with an internal inclinometer and a
compass. Just make your preferred path preferentially warmer a
Since this article, on closer examination, turns out to consist of only
about 6 pages of type, I think I'll simply reprint it in three successive
E-mails (with descriptions of the relevant points in the substantial amount
of accompaying pictorial data):
CRYOBOT: AN ICE PENETRATING ROBOTIC VEHICLE
http://antwrp.gsfc.nasa.gov/apod/ap021101.html Europa's Freckles Credit: R. Pappalardo (U. Colorado) et al., Galileo Project, JPL, NASA Explanation: Europa, one of Jupiter's large Galilean moons, may well posses an ocean of liquid water hidden beneath its icy surface -- and so holds the tantalizi
Would information regarding MIT's Robopike (a robot that imitates the behavior of a fish) be of use to Icepick? Relevant URL: http://web.mit.edu/towtank/www/pike/ Larry - Original Message - From: Christlieb, Scott F. Sent: Friday, November 01, 2002 10:34 AM To: '[EMAIL PROTECTED]
A. Project Management
Does anyone out there have project management software? I think we're at a
point where we'll need some scheduling, like a PERT or GANTT chart. We're not
designing the Polaris submarine or the Titan IV, but if we don't get some sort
of scheduling we'll lose track of wher
Being unlearned in these things, but really curious...
I don't understand how preferential heating or jetting, not that I really
know what these mean, is going to move the vehicle through ice. I'm assuming
that it means specific points of the vehicle will be heated to melting the
ice aro
Advanced Note: This only covers a Europa bound probe and not a
terrestrial one.
Something has really been nagging me and I wanted to throw it out to the
group.
The assumption up to this point is that ther would be debris to navigate
around. Why? Unless physics has changed, ice floats. Why wo
True. Good point.
I guess I pictured in my mind a glacier, where sand, rocks and boulders had
been pushed and collected over time. In the ice fields of Earth's North and
South poles, is there debris like we're talking about?
Maybe the only thing that would be present on Europa's poles is anythin
I believe that due to its plasticity, the
pressure environment within the ice will follow a simple hydrostatic linear
trend.
On Europa, the pressure gradient can be estimated
as Ice SG X 1.324 = kPa/m Depth. So, at 10,000 m depth, the
surrounding pressure ought to be around 13240 kPa
Scott,
Great points all.
In my vision of the device, I see gravity as the sole impetus for downward
movement. I see forward reading sonar and perhaps deep reading resistivity
sensors as the "eyes" of the device to see obstacles below in time to turn
to avoid them.
Preferential heating/jetting
LIFE AMONG THE STARSFrom Sky and Space, Oct/Nov 2002 www.skyandspace.com.auMore than two hundred scientists converged on Hamilton Island,Queensland, recently for a conference that was out of this world.Michael Paine reports...Every few years the International Astronomy Union holds a symposium o
Leaps of rationale (leaps of logic) have lead to great inventions.
Joe Latrell
On Fri, 2002-11-01 at 12:22, Reeve, Jack W. wrote:
>
> Scott,
>
> Great points all.
>
> In my vision of the device, I see gravity as the sole impetus for downward
> movement. I see forward reading sonar and perh
I was looking over the Galileo mission photos of Europa and see many colored photos that show plenty of sediments -- minerals that are not water. They are not sure what they are and may be just higher concentrations of salt but even a salt vein or pockets would be considered debris to a
Keep in mind that not all of the potential obstacles in Europa's ice may be inorganic. In that case we will certainly not want to avoid them! Larry - Original Message - From: [EMAIL PROTECTED] Sent: Friday, November 01, 2002 2:49 PM To: [EMAIL PROTECTED] Subject: Re: Guidance System f
Now we get down to the nitty-gritty. Here's Part 2, courtesy of Robert
Bradbury, without whom my poor fingers would now be worn to stumps. I'll
leave out the article's pictorial data for now -- including the various
functional diagrams of control procedures, which, I think, are adequately
descri
Here's the exciting conclusion. I've left out, for now, the reference list.
I've also, once again, left out the pictorial data, but will summarize the
graph of penetration rates in Figure 9.
5. RESULTS OF CRYOBOT PERFORMANCE TESTING
As stated in Section 4. the
Pardon me for this non-Europa item, but I thought you all might enjoy seeing this image of Saturn and Titan from the Cassini probe at a distance of 285 million kilometers! It leaves one just imagining what the images will be like later on. CASSINI SPOTS SATURNCurrently high in the evening skie
Is there a reason I'm missing why no one is talking about lasers as a tool to get through Europa's ice?
Thanks,
Demetrios Deligiorgis
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, November 01, 2002 5:05 PM
Subject: Re: What about a Slam Dunk approach to Icepick?
Is there a reason I'm missing why no one is talking about lasers as a tool
to get through Europa's ice?
Thanks,
Demetrios
Heat Transfer Question:
If I understand JHB correctly, he assumes that the the melted water will be
in hydrostatic equilibrium with the surrounding ice.
This is true if:
1) the melt water and ice density are equal
2) there is no way for the water to continually squeeze through the pore
spaces an
That was just flat out informative. Thank you, to you and Ray. Now we truly have our own measuring stick to gauge ourselves. I also am I firm believer in not reinventing the wheel; rather to improve on it.
"If I have been able to see farther than others, it was because I stoo
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