Next a description of ongoing research in calibration measurement methodology is presented. Measurement methods for calibrating transducers are then discussed. a tour of NUWCs Underwater Sound Reference Division Laboratory with Capt. It first covers the measurement facilities for performing the services. From: LCS ASW Mission Package Detachment, to Dave Giroux (second from right). This paper describes the calibration, test, and evaluation services. Calibration, test, and evaluation services and standard transducer loan service cover the frequency of 0.2 Hz to 2 MHz. It functions as a National Bureau of Standards for Underwater Acoustics by providing two types of reference services for a fee. The Underwater Sound Reference Detachment of the Naval Research Laboratory evolved from this beginning and now serves as the focus for underwater acoustic metrology in the United States. Yorktown would be the first Atlantic Fleet carrier to be transferred to the Pacific, sailing on 16 December 1941.Abstract: At the beginning of World War II, the United States recognized the need for establishing systematic methods for calibrating and evaluating sonar transducers and established the Underwater Sound Reference Laboratories. PERFORMING ORGANIZATION REPORT NUMBER TD 12,289 9. Yorktown (CV-5), Ranger (CV-4) and Wasp (CV-7), along with the aircraft escort vessel Long Island (AVG-1), were in the Atlantic Fleet Hornet (CV-8), commissioned in late October 1941, had yet to carry out her shakedown. Naval Undersea Warfare Center Division 1176 Howell Street Newport, RI 02841-1708 8. She was to embark her air group, as well as Marine Fighting Squadron (VMF) 221 and a cargo of miscellaneous airplanes to ferry to Pearl Harbor. Saratoga: The Saratoga, having recently completed an overhaul at the Puget Sound Navy Yard, Bremerton, Washington, reached NAS San Diego late in the forenoon watch on 7 December. The outbreak of hostilities resulted in cancellation of the mission and VMSB-231 was retained on board. Dawn on 7 December 1941 found Lexington, heavy cruisers Chicago (CA-29), Portland (CA-33), and Astoria (CA-34), and five destroyers about 500 miles southeast of Midway. Newton, sailed from Pearl to ferry 18 Vought SB2U-3 Vindicators of Marine Scout Bombing Squadron 231 to Midway Island. Lexington: On 5 December 1941, TF-12, formed around Lexington, under the command of Rear Admiral John H. The interface between air and water is an effective barrier to direct sound transmission, and the natural water surface is also a barrier to visual communication across the interface due to internal reflection, particularly when not perfectly smooth. Dawn on 7 December 1941 found TF-8 about 215 miles west of Oahu. For safety and efficiency, divers may need to communicate with others diving with them, or with their surface support team. Upon completion of the mission on 4 December, TF-8 set course to return to Pearl Harbor. After postdoctoral study on 13 piezocomposite materials at the Underwater Sound Reference Detachment of the Naval Research Laboratory (NRL-USRD), Orlando. Halsey, Jr., to ferry 12 Grumman F4F-3 Wildcats of Marine Fighting Squadron (VMF) 211 to Wake Island.
Kimmel sent TF-8, consisting of Enterprise, the heavy cruisers Northampton(CA-26), Chester (CA-27), and Salt Lake City (CA-24) and nine destroyers under Vice Admiral William F. On 7 December 1941, the three Pacific Fleet aircraft carriers were USS Enterprise (CV-6), USS Lexington (CV-2), and USS Saratoga(CV-3).Įnterprise: On 28 November 1941, Admiral Husband E.
0 kommentar(er)
