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据英国《新科学家》杂志1993年8月28日报道,美国马塞诸塞州斯特伯勒的超导体公司和康涅狄格州美国海军水下作战中心已完成了一个装有铋锶铜氧化物高温超导体的实验性声纳系统。这种高温超导体的临界超导温度为73K(—200℃)。美国的这个实验性声纳系统,是一种把电能转变成声音的声发射器,用于探测浅海。该声发射器的成本为80万美元。它有一个用超导体制成的线圈,线圈在通过交流电时产生磁场。在线圈内有一个铽镝芯棒,这种稀土元素制成的芯棒是一种磁致伸缩材料,其长度随磁场的变化而变化。铽镝芯棒和浸在海水中的柱塞相连,芯棒伸长时带动柱塞运动产生声波。美国海军已成功地在30米深的试验湖中对这种声纳系统进行了试验。
According to the British “New Scientist” magazine reported on August 28, 1993, the United States, Souterborough, Mass., And the U.S. Navy's Underwater Operation Center in Connecticut have completed a bismuth-strontium copper oxide high temperature superconductor Experimental sonar system. The critical superconducting temperature for this high temperature superconductor is 73K (-200 ° C). This experimental sonar system in the United States is an acoustic emitter that converts electrical energy into sound to detect shallow seas. The cost of the acoustic transmitter is 800,000 U.S. dollars. It has a coil made of superconductor, which generates a magnetic field when passing through an alternating current. In the coil there is a terbium dysprosium mandrel, the core made of rare earth elements is a magnetostrictive material, the length of which varies with the magnetic field changes. Terbium dysprosium rods and rods immersed in the sea water connected to the mandrel extension rod-driven movement generated sound waves. The U.S. Navy has successfully tested this sonar system in a 30-meter deep test lake.