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Apollo Drill Power?
I'm in a process of finishing my Ph.D. thesis about Mars drilling
instrument design. In a literature part of my thesis I compare different old drill machines that have flown or existed in concept level. There have been several drills in space, such as the Luna, Venera, Apollo, Deep Space 2, Philae SD2, etc. However, I haven't been able to find information about the power of the ALSD (Apollo Lunar Surface Drill) electric motor. I have used Google, libraries, old publications etc. I even mailed the company that made the drills (no-one knew about the ALSD values..). This is not the most important thing, but it would be nice to "fill the comparison table" of that chapter of my thesis. Does anyone know the power level of the ALSD electric motor, battery capacity etc.? (I know the ALSD mass, dimensions and the drill rod specs) With best regards, Matti Anttila Finland http://antti.la/ |
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Matti Anttila schrieb:
This is not the most important thing, but it would be nice to "fill the comparison table" of that chapter of my thesis. Does anyone know the power level of the ALSD electric motor, battery capacity etc.? (I know the ALSD mass, dimensions and the drill rod specs) Maybe this helps: Apollo Lunar Surface Drill /ALSD/ Final report (8MB) http://ntrs.nasa.gov/archive/nasa/ca...1969002958.pdf Harald |
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Matti Anttila wrote in :
However, I haven't been able to find information about the power of the ALSD (Apollo Lunar Surface Drill) electric motor. I have used Google, libraries, old publications etc. I even mailed the company that made the drills (no-one knew about the ALSD values..). Try the local paper from the town the factory was in. It'll mean reading through a lot of microfilm, but you might just luck into a story on the local guys at the plant and the gadget they sent to the moon. Small town weeklies are especially likely to have this sort of story. Microfilm in the town libary is free to use,too, if you ignore the small detail of travel from Finland. |
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On 2005-02-24, Matti Anttila wrote:
I'm in a process of finishing my Ph.D. thesis about Mars drilling instrument design. In a literature part of my thesis I compare different old drill machines that have flown or existed in concept level. There have been several drills in space, such as the Luna, Venera, Apollo, Deep Space 2, Philae SD2, etc. Now I'm curious - Deep Space 2 had drills? I thought it was a simple kinetic penetrator... -- -Andrew Gray |
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In article ,
Andrew Gray wrote: ...There have been several drills in space, such as the Luna, Venera, Apollo, Deep Space 2, Philae SD2, etc. Now I'm curious - Deep Space 2 had drills? I thought it was a simple kinetic penetrator... If (dim) memory serves, each penetrator had a little drill that went out sideways and brought a bit of the surrounding material into the penetrator for analysis. -- "Think outside the box -- the box isn't our friend." | Henry Spencer -- George Herbert | |
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Harald Kucharek wrote:
Apollo Lunar Surface Drill /ALSD/ Final report (8MB) http://ntrs.nasa.gov/archive/nasa/ca...1969002958.pdf Thank you! This was exactly what I was looking for!! Very interesting to see that the ALSD had electric (input) power of 456 W! Not very suitable for modern robotic driller instruments... Matti Anttila -- http://antti.la/ |
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On Thu, 24 Feb 2005 22:31:47 +0200 (EET), Matti Anttila
wrote: Thank you! This was exactly what I was looking for!! Very interesting to see that the ALSD had electric (input) power of 456 W! Not very suitable for modern robotic driller instruments... ....Yeah, well, whaddya expect from an off-the-shelf Sears Craftsman rechargeable drill, circa 1967-69? :-) OM -- "No ******* ever won a war by dying for | http://www.io.com/~o_m his country. He won it by making the other | Sergeant-At-Arms poor dumb ******* die for his country." | Human O-Ring Society - General George S. Patton, Jr |
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"Henry Spencer" wrote in message:
If (dim) memory serves, each penetrator had a little drill that went out sideways and brought a bit of the surrounding material into the penetrator for analysis. Yes, that's right. The primary scientific objectives of the Deep Space 2 (DS2) Mars microprobes were to search for the presence of water ice in the soil and to characterize its thermal and physical properties. DS2 penetrators included a small drill, which would have brought approximately 0.1-gram soil sample inside the probe. The sample would then be heated in 10 deg C increments and measurements of the amount of water vapour released at each stage of heating would be made using a tunable diode laser, giving information on the water-bearing minerals within the sample. The tunable diode laser is set so that its light is at the point in the spectrum where water absorbs light. When the impact occurs, an accelerometer will measure the rate at which the probes come to rest. This information will also be used to determine the hardness of the soil and to determine possible soil layers at the impact place. The DS2 probe has temperature sensors, which will estimate the heat conductivity of the soil. See also: http://mars4.jpl.nasa.gov/msp98/ds2/tech/forebody.html The drill has a tiny motor, which will drive a small drill bit out the side of the probe's forebody. After sample acquisition, bits of soil engaged by the drill tool will fall into a small heater cup, which is sealed by firing a pyrotechnic device which closes a door. The drill mechanics is shown in: http://mars4.jpl.nasa.gov/msp98/ds2/tech/sample.html That page also describes some technical details of the drill system. Matti Anttila http://antti.la/ "Henry Spencer" wrote in message ... In article , Andrew Gray wrote: ...There have been several drills in space, such as the Luna, Venera, Apollo, Deep Space 2, Philae SD2, etc. Now I'm curious - Deep Space 2 had drills? I thought it was a simple kinetic penetrator... If (dim) memory serves, each penetrator had a little drill that went out sideways and brought a bit of the surrounding material into the penetrator for analysis. -- "Think outside the box -- the box isn't our friend." | Henry Spencer -- George Herbert | |
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In message , Matti Anttila
writes "Henry Spencer" wrote in message: If (dim) memory serves, each penetrator had a little drill that went out sideways and brought a bit of the surrounding material into the penetrator for analysis. Yes, that's right. Snip. http://mars4.jpl.nasa.gov/msp98/ds2/tech/forebody.html Very impressive, especially for something that is intended to be dropped from a great height :-) Thanks. Does anyone know why it failed? -- Support the DEC Tsunami Appeal http://www.dec.org.uk/. Remove spam and invalid from address to reply. |
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"Jonathan Silverlight" wrote in message ... Very impressive, especially for something that is intended to be dropped from a great height :-) Thanks. Does anyone know why it failed? Did ESA help fund it? |
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