A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES.
Hot point drills are practical tools for penetrating glaciers for ice thickness and temperature measurements and other glaciological studies. Buoyancy stabilization ensures a vertical attitude of the drill and a plumb hole using a heavy hot point and a light upper section which floats in the surroun...
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ftdtic:AD0678580 2023-05-15T15:01:33+02:00 A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. Aamot,Haldor W. C. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1968-10 text/html http://www.dtic.mil/docs/citations/AD0678580 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0678580 en eng http://www.dtic.mil/docs/citations/AD0678580 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Machinery and Tools (*GLACIERS DRILLS) (*DRILLS PENETRATION) BUOYANCY THICKNESS STABILIZATION TEMPERATURE WATER FREEZING MOUNTAINS FORCE(MECHANICS) MATHEMATICAL ANALYSIS GRAVITY ARCTIC REGIONS REMOTE AREAS Text 1968 ftdtic 2016-02-18T21:29:27Z Hot point drills are practical tools for penetrating glaciers for ice thickness and temperature measurements and other glaciological studies. Buoyancy stabilization ensures a vertical attitude of the drill and a plumb hole using a heavy hot point and a light upper section which floats in the surrounding melt water. The buoyant force is less than the weight of the drill in air but its rectifying moment about the fulcrum (the tip) is greater than the tilting moment of the drill weight. Two methods to prevent refreezing of the melt water are proposed to permit drilling in cold ice and to assure continued access to the hole. (Author) Text Arctic Ice permafrost Defense Technical Information Center: DTIC Technical Reports database Arctic Fulcrum ENVELOPE(161.117,161.117,-78.033,-78.033) Tilting ENVELOPE(-54.065,-54.065,49.700,49.700) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Machinery and Tools (*GLACIERS DRILLS) (*DRILLS PENETRATION) BUOYANCY THICKNESS STABILIZATION TEMPERATURE WATER FREEZING MOUNTAINS FORCE(MECHANICS) MATHEMATICAL ANALYSIS GRAVITY ARCTIC REGIONS REMOTE AREAS |
spellingShingle |
Snow Ice and Permafrost Machinery and Tools (*GLACIERS DRILLS) (*DRILLS PENETRATION) BUOYANCY THICKNESS STABILIZATION TEMPERATURE WATER FREEZING MOUNTAINS FORCE(MECHANICS) MATHEMATICAL ANALYSIS GRAVITY ARCTIC REGIONS REMOTE AREAS Aamot,Haldor W. C. A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
topic_facet |
Snow Ice and Permafrost Machinery and Tools (*GLACIERS DRILLS) (*DRILLS PENETRATION) BUOYANCY THICKNESS STABILIZATION TEMPERATURE WATER FREEZING MOUNTAINS FORCE(MECHANICS) MATHEMATICAL ANALYSIS GRAVITY ARCTIC REGIONS REMOTE AREAS |
description |
Hot point drills are practical tools for penetrating glaciers for ice thickness and temperature measurements and other glaciological studies. Buoyancy stabilization ensures a vertical attitude of the drill and a plumb hole using a heavy hot point and a light upper section which floats in the surrounding melt water. The buoyant force is less than the weight of the drill in air but its rectifying moment about the fulcrum (the tip) is greater than the tilting moment of the drill weight. Two methods to prevent refreezing of the melt water are proposed to permit drilling in cold ice and to assure continued access to the hole. (Author) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Aamot,Haldor W. C. |
author_facet |
Aamot,Haldor W. C. |
author_sort |
Aamot,Haldor W. C. |
title |
A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
title_short |
A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
title_full |
A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
title_fullStr |
A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
title_full_unstemmed |
A BUOYANCY STABILIZED HOT POINT DRILL FOR GLACIER STUDIES. |
title_sort |
buoyancy stabilized hot point drill for glacier studies. |
publishDate |
1968 |
url |
http://www.dtic.mil/docs/citations/AD0678580 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0678580 |
long_lat |
ENVELOPE(161.117,161.117,-78.033,-78.033) ENVELOPE(-54.065,-54.065,49.700,49.700) |
geographic |
Arctic Fulcrum Tilting |
geographic_facet |
Arctic Fulcrum Tilting |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0678580 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766333564651044864 |