In a message dated 5/30/2002 2:23:08 PM Alaskan Daylight Time, [EMAIL PROTECTED] writes:
As to question 1-
In our recently completed senior design project (head to
expert.cc.purdue.edu/~precoda if you're interested), we in Purdue's
Astronautical Engineering program found a melting time of about
In a message dated 5/30/2002 10:53:56 AM Alaskan Daylight Time, [EMAIL PROTECTED] writes:
1. How long would it take to melt through 12 miles of ice?
2. Is communication much more difficult?
3. Are there layers of ice flowing at different speeds that might make for a
shear-zone or something? 4.
In a message dated 5/30/2002 7:50:24 AM Alaskan Daylight Time, [EMAIL PROTECTED] writes:
With Europa's 0.135 Earth gravity, and assuming the same 1.022 SG seawater
density, excluding all other small variables, real pressure at 12 miles
depth on Europa is equivalent to an Earth ocean depth of
In a message dated 5/30/2002 3:18:08 PM Alaskan Daylight Time, [EMAIL PROTECTED] writes:
a typical Pu RTG are not
sufficient to melt through salt of some thickness threshold that an
engineer familiar with the problem could calculate. My semi-educated
guess is anything over 0.5 meter will be a
I guess the search option depends
on the available technolgy. Prumably a longer orbit for searching means more
radiation exposure in orbit before landing- you would have to be sure that extra
time spent would pay off. It might just be better to land and get under that
lovely ice shield
it in place or
blocking its vertical movement. What methods or designs are needed to avoid
this from happening?
Mickey Schmidt
-Original Message-
From: Thomas Green [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 30, 2002 12:58 PM
To: [EMAIL PROTECTED]
Subject: Re: Europa's ice thickness
low earth orbit, then play with it?
Robert CrawleyElite Precision Fabricators,
Inc.Programmer(936) 449-6823http://epfi.cjb.net/
- Original Message -
From:
[EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, May 31, 2002 1:17 AM
Subject: Re: Europa's ice thick
I'm confused. Does the 12 miles refer to ice thickness, ice and water,
water, or what?
Best regards,
Jack
-Original Message-
From: Thomas Green [mailto:[EMAIL PROTECTED]]
Sent: Thursday 30 May 2002 09:45
To:
sorry for the confusion. 12 miles is the ice thickness of the crust.
I should've asked, "If 12 miles is the minimum depth to reach
the ocean, would this pose a serious engineering challenge for a submersible?"
"Reeve, Jack W." wrote:
I'm confused. Does the 12 miles refer to ice
thickness, ice
I read that in last week's Nature, Paul Schenk of the Lunar Planetary
Institute estimates Europa's crust to be at least 12 miles deep. He
calculated
this on impact crater shapes.
If 12 miles is the minimum depth of the ocean, would this pose a serious
engineering challenge for a submersible?
30, 2002 11:46 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: Europa's ice thickness
With Europa's 0.135 Earth gravity, and assuming the same 1.022 SG seawater
density, excluding all other small variables, real pressure at 12 miles
depth on Europa is equivalent to an Earth ocean
,
Jack W.
Sent: Thursday, May 30, 2002 11:46 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: Europa's ice thickness
With Europa's 0.135 Earth gravity, and assuming the same 1.022 SG seawater
density, excluding all other small variables, real pressure at 12 miles
depth on Europa
As to question 1-
In our recently completed senior design project (head to
expert.cc.purdue.edu/~precoda if you're interested), we in Purdue's
Astronautical Engineering program found a melting time of about 9 months
for 2 1/2 miles of ice, assuming all 4.3 kW of a typical RTG's thermal
output
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