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| 4/05/26 1:20pm | [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, [5], 6, 7, 8, 9, 10 ] |
| Subject: Re: All shook up | |
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Author: Ronald John Paul (Happy in Oamaru) |
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Date Posted: 10/03/08 8:43pm In reply to: albert bishop 's message, "All shook up" on 9/03/08 11:14am I stood by a new building in Japan and part of sea trials was a crash astern movement ie full ahead to full astern very interesting and a lot of vibrations, the distance run was measured until she was stopped in the water and moving astern, this was repeated but this time reducing the rpm until stopped and then going astern and increasing revs untill full was obtained.Again the distance run was measured. I can't remember times or distances but it was a fairly large reduction compared to the crash exercise. A crash stop and astern running mainly causes cavitation on the blades and they do not bite into it unill the way has come off the ship. hope this helps , cheers [ Next Thread | Previous Thread | Next Message | Previous Message ] |
| Subject | Author | Date |
| Re: All shook up | albert bishop (Still happy) | 10/03/08 9:00pm |