Re: Better heat shielding

2003-02-03 Thread Marcus Robertsson
> I believe that I've read articles that much better heat shielding > materials have been developed since the shuttle tile system was > created. Does anyone know what these materials might be and who > is developing them? I remember reading about some new heat shielding that

RE: Better heat shielding

2003-02-03 Thread Reeve, Jack W.
Re the tiles' heat capacity and tolerance; there was a very good article in National Geographic circa +- 79-81 or so I think. I recall it because of a photo of a guy holding one in his bare hand which had been heated to cherry red. I don't have the issue, but someone in Europa-lan

Better heat shielding

2003-02-03 Thread Robert J. Bradbury
I believe that I've read articles that much better heat shielding materials have been developed since the shuttle tile system was created. Does anyone know what these materials might be and who is developing them? Also, does anyone know the heat tolerance of the tiles on the shuttl

Fw: Landers Feel The Heat On Space Missions (Beagle 2, Huygens)

2003-02-02 Thread LARRY KLAES
    - Original Message - From: Ron Baalke Sent: Thursday, January 30, 2003 4:00 PM To: [EMAIL PROTECTED] Subject: Landers Feel The Heat On Space Missions (Beagle 2, Huygens)  ESA Science Newshttp://sci.esa.int30 Jan 2003Landers feel the heat on space missionsSpace is certainly a cold

RE: Heat

2002-11-04 Thread Schmidt Mickey Civ 50 ES/CC
USAF Academy, CO 80840   -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 31, 2002 7:51 PM To: [EMAIL PROTECTED] Subject: Re: Heat   In a message dated 10/31/2002 4:54:46 PM Alaskan Standard Time, [EMAIL PROTECTED] writes: Consid

Re: How About a Separate Heat Source to Lead the Way?

2002-11-02 Thread Bruce Moomaw
- Original Message - From: LARRY KLAES To: europa Sent: Saturday, November 02, 2002 8:04 PM Subject: How About a Separate Heat Source to Lead the Way? As my title suggests, would it be feasible to build a separate probe moving just ahead of the Icepick bot, designed solely to melt

How About a Separate Heat Source to Lead the Way?

2002-11-02 Thread LARRY KLAES
As my title suggests, would it be feasible to build a separate probe moving just ahead of the Icepick bot, designed solely to melt through the Europan ice?   My thinking here is, *instead of* burdening Icepick with *both* science instrumentation and heating equipment, why not have a bot lead the wa

Re: Heat

2002-11-01 Thread Leonard DiFrancesco
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

RE: Heat

2002-11-01 Thread Reeve, Jack W.
kPa or 1920 PSI, assuming ice SG of 1.0.   Jack   -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Thursday 31 October 2002 20:51 To: [EMAIL PROTECTED] Subject: Re: Heat   In a message dated 10/31/2002 4:54:46 PM Alaskan Standard Time, [EMAIL PROTECTED

Re: Heat

2002-11-01 Thread JHByrne
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

Re: Heat

2002-11-01 Thread Bruce Moomaw
- 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

Re: Heat

2002-10-31 Thread JHByrne
In a message dated 10/31/2002 4:54:46 PM Alaskan Standard Time, [EMAIL PROTECTED] writes: Consideration of the amount of heat required to melt the ice question: In the calculation of the amount of heat required was it considered that as the probe descends from the surface the stress increases

Heat

2002-10-31 Thread Leonard DiFrancesco
Consideration of the amount of heat required to melt the ice question: In the calculation of the amount of heat required was it considered that as the probe descends from the surface the stress increases in a linear fashion = density of ice X depth. Thus, as the ice melts and the bonds break

Titan's Bizarre Landscape Shaped by Internal Heat?

2002-10-14 Thread LARRY KLAES
TITAN'S BIZARRE LANDSCAPE SHAPED BY INTERNAL HEAT?-- Six months after NASA's Cassini spacecraft reaches Saturn in July 2004, it will deploy the European Space Agency's Huygens probe to Saturn's largest moon, Titan. A cold, dark,

Titan's landscape shaped more by internal heat than erosion

2002-10-10 Thread LARRY KLAES
Titan's Bizarre Landscape Shaped More by Internal Heat than Erosion, UA Scientist Predicts http://www.spaceref.com/news/viewpr.html?pid=9471 Pluto is undergoing global warming, researchers findhttp://www.spaceref.com/news/viewpr.html?pid=9465

Fw: Amalthea Flyby: The Heat is On

2002-09-12 Thread LARRY KLAES
  - Original Message - From: [EMAIL PROTECTED] Sent: Thursday, September 12, 2002 5:42 AM To: [EMAIL PROTECTED] Subject: Amalthea Flyby: The Heat is On  Amalthea Flyby: The Heat is Onhttp://www.astrobio.net/news/article270.html    On November 5, the Galileo spacecraft with fly

Re: Water's specific heat (or, Help, Mr. Wizard!)

2002-06-29 Thread Robert Crawley
Message - From: Bruce Moomaw <[EMAIL PROTECTED]> To: Planetary Sciences Group <[EMAIL PROTECTED]> Cc: ISSDG <[EMAIL PROTECTED]>; Jupiter List <[EMAIL PROTECTED]>; Europa Icepick <[EMAIL PROTECTED]> Sent: Saturday, June 29, 2002 5:50 AM Subject: Water's specific heat

Water's specific heat (or, Help, Mr. Wizard!)

2002-06-29 Thread Bruce Moomaw
I've finally found a website with a little information as to just why water has such a huge ability to absorb heat energy with a minimal change in temperature (www.phy.olemiss.edu/PhysSci/PhysSci108/Chapter15_phys108.pdf ): "An object's temperature is a measure of the average ki