| 词条 | HELRAS |
| 释义 |
HELRAS or the Helicopter Long Range Active Sonar is a naval helicopter undersea sensor, a dipping sonar (a form of towed array sonar), deployed by helicopters of many naval air forces around the world to detect submarines; it is a form of geophysical MASINT. HistoryHELRAS was first developed in the 1970s by FIAR and British Aerospace.[1] Another rival system was called FLASH (Folding Light Acoustic System for Helicopters). In the 1980s, the system was supplied by British Aerospace.[2] A competitor of HELRAS is the Low Frequency Active Sonar (LFAS). CapabilityIt can detect submarines up to 12km.[3] ManufactureParts for the system are made by Rolls-Royce North America.[4] DeploymentThe system has often been fitted to the NHIndustries NH90 helicopter of navies such as Italy and the Netherlands. See also
References1. ^[https://www.janes.com/images/assets/541/51541/Active_dipping_sonar_technology.pdf Active dipping sonar technology] {{Hydroacoustics}}{{navy-stub}}2. ^[https://www.flightglobal.com/FlightPDFArchive/1987/1987%20-%202230.PDF Flight International October 1987] 3. ^[https://www.kvmo.nl/images/pdf/2014/scriptieASWknippenberg.pdf Simulating Anti-Submarine Warfare using MANA] 4. ^[https://www.rolls-royce.com/~/media/Files/R/Rolls-Royce/documents/customers/marine/naval-handling-sys-brochure.pdf Rolls-Royce Naval Handling] 3 : Anti-submarine warfare|Helicopter components|Military sonar equipment of the United States |
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