VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1)
Vibrations were measured on the port propulsion system of USNS POINT BARROW (T-AKD 1) to determine the cause of an engine casualty. Large torque variations of the propeller shaft occurred at very low RPM and generated thrust variations. These vibrations are probably self-excited by large binding for...
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ftdtic:AD0650550 2023-05-15T18:01:43+02:00 VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) Buchmann,Erich Jasper,Norman H. DAVID TAYLOR MODEL BASIN WASHINGTON D C STRUCTURAL MECHANICS LAB 1958-12 text/html http://www.dtic.mil/docs/citations/AD0650550 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0650550 en eng http://www.dtic.mil/docs/citations/AD0650550 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Marine Engineering *CARGO SHIPS VIBRATION SHIP TURBINES MARINE PROPULSION FAILURE TURBINE COMPONENTS MEASUREMENT Text 1958 ftdtic 2016-02-21T21:47:05Z Vibrations were measured on the port propulsion system of USNS POINT BARROW (T-AKD 1) to determine the cause of an engine casualty. Large torque variations of the propeller shaft occurred at very low RPM and generated thrust variations. These vibrations are probably self-excited by large binding forces at the shaft bearings. Vibration resonances at turbine and double-turbine frequencies occurred at the turbine housing at about 140 shaft RPM and are probably excited by unbalance in the turbine system. The magnitudes of other measured vibrations fall within a range usually acceptable on ships. Vibration levels on the turbine and gear case of the starboard propulsion system, where measured, indicated no unbalance in this system. (Author) Text Point Barrow Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Marine Engineering *CARGO SHIPS VIBRATION SHIP TURBINES MARINE PROPULSION FAILURE TURBINE COMPONENTS MEASUREMENT |
spellingShingle |
Marine Engineering *CARGO SHIPS VIBRATION SHIP TURBINES MARINE PROPULSION FAILURE TURBINE COMPONENTS MEASUREMENT Buchmann,Erich Jasper,Norman H. VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
topic_facet |
Marine Engineering *CARGO SHIPS VIBRATION SHIP TURBINES MARINE PROPULSION FAILURE TURBINE COMPONENTS MEASUREMENT |
description |
Vibrations were measured on the port propulsion system of USNS POINT BARROW (T-AKD 1) to determine the cause of an engine casualty. Large torque variations of the propeller shaft occurred at very low RPM and generated thrust variations. These vibrations are probably self-excited by large binding forces at the shaft bearings. Vibration resonances at turbine and double-turbine frequencies occurred at the turbine housing at about 140 shaft RPM and are probably excited by unbalance in the turbine system. The magnitudes of other measured vibrations fall within a range usually acceptable on ships. Vibration levels on the turbine and gear case of the starboard propulsion system, where measured, indicated no unbalance in this system. (Author) |
author2 |
DAVID TAYLOR MODEL BASIN WASHINGTON D C STRUCTURAL MECHANICS LAB |
format |
Text |
author |
Buchmann,Erich Jasper,Norman H. |
author_facet |
Buchmann,Erich Jasper,Norman H. |
author_sort |
Buchmann,Erich |
title |
VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
title_short |
VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
title_full |
VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
title_fullStr |
VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
title_full_unstemmed |
VIBRATION MEASUREMENTS ON PORT PROPULSION SYSTEM OF USNS POINT BARROW (T-AKD 1) |
title_sort |
vibration measurements on port propulsion system of usns point barrow (t-akd 1) |
publishDate |
1958 |
url |
http://www.dtic.mil/docs/citations/AD0650550 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0650550 |
genre |
Point Barrow |
genre_facet |
Point Barrow |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0650550 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766171215347580928 |