A duration of 1 sweep will start the sine tone at 30Hz and sweep up to 100Hz. The default sweep range is 30Hz to 100Hz. You can run a sine sweep test with the VibrationVIEW Sine software module (free demo). The test could also be defined so that the sweep began at the high frequency and ended at the low frequency. Then, it would increase the frequency over time until the controller reached 1,000Hz. The controller would start the test by shaking the product at a rate of 30Hz.
![mine swept mine swept](http://www.a70thvets.com/Manders/pictures/074%20Pleiku,%20Hwy%20509,%20daily%20mine%20sweep,%20Manders.jpg)
Consecutive sweeps in the same direction (loop)įor example, consider a sweep range of 30Hz to 1,000Hz.Sweep back and forth between the min and max frequencies.A single pass from the highest to the lowest value (sweep down).A single pass from the lowest to the highest value (sweep up).
![mine swept mine swept](https://boats-from-usa.com/sites/default/files/boats/2018-07/08/178859/not-specified-yp-or-usn-mine-sweep-coop-2082018.jpg)
In this case, the sweep range defines the sine test profile because it determines the minimum and maximum frequencies of the sweep.Ī sweep can be defined in several ways, depending on the software used to control the sine test: Sweep RangeĮngineers often run sine tests as swept sine tones across a defined frequency range. Below, we outline two parameters engineers use to define a sine sweep test: sweep range and sweep rate.
![mine swept mine swept](https://l450v.alamy.com/450v/j15ycr/a-halo-trust-deminer-sweeping-a-mine-field-in-cahora-bassa-mozambique-j15ycr.jpg)
Reclassified AT-134 AM-44 Mallard Reclassified ASR-4 AM-45 Ortolan Reclassified ASR-5 AM-46 Peacock AM-47 Pigeon Reclassified ASR-6 AM-48 Redwing Reclassified ARS-4 Minesweeper No.In vibration testing, a sine sweep test helps determine a product’s resonant frequencies. Reclassified AVP-8 Minesweeper No.42 Goshawk Minesweeper Photo Index (AM / MSF / MSO / BAM)ĪM-1 Lapwing Reclassified AVP-1 AM-2 Owl Reclassified AT-137 AM-3 Robin Reclassified AT-140 AM-4 Swallow AM-5 Tanager AM-6 Cardinal AM-7 Oriole Reclassified AT-136 AM-8 Curlew AM-9 Finch AM-10 Heron Reclassified AVP-2 Minesweeper No 11 CondorĪM-13 Turkey Reclassified AT-143 AM-14 Woodcock Reclassified AT-145 AM-15 Quail AM-16 Partridge Reclassified AT-138 AM-17 Eider Reclassified YNG-20 AM-18 Thrush Reclassified AVP-3 AM-19 Avocet Reclassified AVP-4 AM-20 Bobolink Reclassified AT-131 AM-21 Lark Reclassified AT-168 AM-22 Widgeon Reclassified ASR-1 AM-23 Teal Reclassified AVP-5 AM-24 Brant Reclassified AT-132 AM-25 Kingfisher Reclassified AT-135 AM-26 Rail Reclassified AT-139 AM-27 Pelican Reclassified AVP-6 AM-28 Falcon Reclassified ASR-2 AM-29 Osprey Renamed/Reclassified Crusader (ARS-2) AM-30 Seagull Reclassified AT-141 AM-31 Tern Reclassified AT-142 AM-32 Flamingo Reclassified ARS-1 AM-33 Penguin AM-34 Swan Reclassified AVP-7 AM-35 Whippoorwill Reclassified AT-169 AM-36 Bittern AM-37 Sanderling AM-38 Auk Renamed/Reclassified Discoverer (ARS-3) AM-39 Chewink Reclassified ASR-3 AM-40 Cormorant Reclassified AT-133 AM-41 Gannet Of these, three were sunk in action and 17 returned after the war.Ĭlick on ship name to view image(s) and DANFS history Navy counterparts, only 20 of this type were actually transferred. Designed for the same mission as their U.S. Navy and were assigned Navy names and hull numbers. Originally these ships did not have Navy names or hull numbers, but 12 of these vessels were ordered retained for service in the U.S. Navy for transfer to Great Britain under Lend Lease and were designated BAM-1 to 32. Thirty-two vessels of the Auk Class were ordered by the U.S. MSOs were capable of sweeping for moored contact mines as well as bottom magnetic and acoustic mines. All of the 1950 era MSOs had UQS-1 mine-locating sonar, later updated with SQQ-14 sonar. These new minesweepers were smaller and built primarily of wood, with bronze and stainless (non-magnetic) steel fittings to minimize their magnetic signature. In contrast to the steel-hulled minesweepers of World War II, designated AM later MSF and still later, MSO. They consisted of three classes of ships: Agile/Aggressive, Hull numbers 421 to 507 Acme, hull numbers 508 to 518 and Ability, hull numbers 519 to 522. These new minesweepers were designated Minesweeper, Ocean (MSO). During the decade of the 1950s sixty-five new minesweepers were built. NavSource Photo Archives: Minesweeper (AM)Īs a result of the Korean war experience the United States undertook the construction of a new series of minesweepers on a large scale.