The model WFA-1 is a searchlight type of echo-ranging and listening equipment. Slewing in either direction because the equipment In the WCA of a Rochelle-salt echo-ranging The only major difference between surface-shipĮcho-ranging equipment and the WCA is the use Own indicator, which is a rotating-light type. The indicator is theįamiliar rotating-light type used on early echo-ranging equipment. The units of the WCA are similar to standard Same range indicator, and the sounding and The three sound heads of the WCA-2 sonar equipment.įor example, the QB and QC-JK systems use the Schematic diagram of the AN/UQC-1 equipment.įigure 14-1. In common with one or both of the other systems.įOLDOUT - Figure 13-22. Training controls because the beam is directedĮssentially of three separate complete systems,Įach of the three systems uses one or more units The third system uses the NM transducer for Sharply resonant than a magnetostriction transducer of the same beamwidth. Than the QC because a crystal transducer is less The QB transducerĬan be operated over a wider range of frequencies The second system uses the QB Rochelle-salt More sensitive than the QC magnetostriction transducer, is used for listening only. QC magnetostriction element is used for echo Sound head for echo ranging and listening. One system, the QC-JK, uses the combination The QB is a Rochelle-salt transducer.Īs shown in figure 14-2, the WCA-2 consists of The QC magnetostriction transducer and the JK Rochelle-salt hydrophone are housed in one sound head, called the The model WCA-2 equipment uses 3 transducers and 1 hydrophone in three separate housings, as shown in figure 14-1. It is no longer being installed on modern submarines, the WCA sonar equipment is described only It is nowīeing replaced by scanning equipment. QLA f-m scanning sonar also are described in this It provides a paper record as well as aĬapacitive and f-m scanning sonars, which haveīeen developed since the war, are being installedĬapacitive-type scanning sonar and the model Sounding equipment for installation in submarines WFA does not have a sounding device, it is installed usually with an echo-sounding equipment,Īre described in this chapter. The model WFA sonar equipment, which has torpedo-detection and mine-detection circuits, wasĭeveloped near the end of World War II. WCA is such a combination sonar equipment. Submarine is used most often for navigation andĭuring World War II, combination sonar equipments that provided ranging, listening, and sounding were installed on submarines. Trained to the target bearing and a single short ping Target is desired, the echo-ranging transducer is Target is detected, the bearing is determined by the Submarine is listening (chapter 13) because echo The primary method of sonar detection by a
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