Aviation Electronics Technician 1 - Historic Naval Ships Association

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4-31.4-32.4-33.When positive gradient conditionsexist in the ocean, layer depth isdefined as the depth of which ofthe following temperatures?1. Minimum temperature2. Maximum temperature3. Optimum temperature4. Relative temperatureWhich of the following cruisingmaneuvers by a submarine shouldprove most effective in causing asurface vessel to lose contact withthe submarine?1.2.3.4.Cruising in a uniformtemperature areaCruising above layer depthCruising below a thermoclineCruising in an isothermal layerA car is waiting at a crossing fora train to go by. The driver ofthe car honks the horn as the trainapproaches. After the train passesthe crossing, the engineer on thetrain blows the whistle. How willthe sound of the car horn heard bythe train engineer compare to thesound of the whistle heard by thecar driver?1.2.3.4.The horn will sound lower thanit actually is, and the whistlewill sound higher than itactually isThe horn will sound lower thanit actually is, and the whistlewill sound lower than itactually isThe horn will sound higher thanit actually is, and the whistlewill sound higher than itactually isThe horn will sound higher thanit actually is, and the whistlewill sound lower than itactually is4-34. As a sound emitter moves away froma receiver, which of the followingapparent changes will occur?1.2.3.4.Only frequency will increaseOnly wavelength will increaseWavelength and frequency willincreaseWavelength will decrease4-35. Which of the following sounds arerarely heard by the sonar operator?1. Pings2. Target echoes only3. Reverberations only4. Reverberations and targetechoesIN ANSWERING QUESTIONS 4-36 THROUGH 4-39,SELECT FORM COLUMN B THE RELATIVE PITCH OFTHE REFLECTED SOUND THAT IS MOSTDESCRIPTIVE OF EACH OF THE MOTIONCONDITIONS LISTED IN COLUMN A. NOT ALLRESPONSES IN COLUMN B ARE USED.4-36.4-37.4-38.4-39.A. RELATIVEMOTIONSSonar stationary,all signalsreceived classedas reverberationechoesSonar and targetmoving in oppositedirections, andseparatingSonar and targetmoving towardeach otherSonar and targetmoving abreast andthe same directionB. RELATIVEPITCH1. Higher2. Lower3. Same4. Undulatingin26
IN ANSWERING QUESTIONS 4-40 THROUGH 4-43,SELECT FROM COLUMN B THE COMPONENT OF THESONAR SET THAT IS ASSOCIATED WITH THEFUNCTIONS LISTED IN COLUMN A.4-40.4-41.4-42.4-43.A. FUNCTIONS B. COMPONENTSDisplays target 1. Domeechoes on a CRTcontrolProvides the pilot 2. Azimuth andwith digital range rangeand bearingindicatorinformation3. RecorderEnergizes thereeling machine 4. Bearing andraise and lowerrangesequenceindicatorDisplays targetechoes on a paperchart4-44. In the event the hydraulic systemfails in the cable reeling machine,the sonar set operator shouldactivate what switch to raise thedome?1. RAISE/LOWER switch2. SEAT switch3. TRAIL switch4. AUXILIARY RAISE switch4-45. What tool is provided the sonar setoperator to manually retrievelowered cable and dome in the eventof an electrical or hydraulicfailure?1. Speed wrench2. Block and tackle3. Turnbuckle4. Pulley arrangement4-46. What is/are the function(s) of ahydrophone?1. Sound transmission only2. Sound reception only3. Sound transmission andreception only4. Sound transmission, reception,and inversionIN ANSWERING QUESTIONS 4-47 THROUGH 4-49,SELECT FROM COLUMN B THE FUNCTION OF EACHOF THE PROJECTOR ASSEMBLY COMPONENTSLISTED IN COLUMN A. NOT ALL RESPONSES INCOLUMN B ARE USED.A. COMPONENTS B. FUNCTIONS4-47. Projector 1. Radiatesdirectional4-48. Fluxgate compass pulses intothe air4-49. Pressurepotentiometer 2. Convertselectricalpulses toacousticpulses3. Provides asignal toindicatedomeazimuthdeviationrelative tomagneticnorth4. Provides asignal toindicatehow deepthe dome issubmerged4-50. The stave assemblies in thehydrophone assembly function to1. measure the temperature of thewater2. measure the depth of the domein the water3. convert acoustic signals intoelectrical signals4. convert low-level ac signalsInto acoustic signals4-51. How often, if ever, must thehydrophone be adjusted?1. Every 28 days2. Every 56 days3. Every 112 days4. Never27
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PASS/FAIL ASSIGNMENT PROCEDURESIf y
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Student CommentsCourse Title:Aviati
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Table 1-1.-Radio-Frequency Spectrum
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Figure 1-3.-LS-602/AI control panel
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Figure 1-4.-Manchester encoding.thr
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they can complete a full cycle. The
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one-shot circuit output is directly
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Figure 1-7.-VHF-AM control box.Figu
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indicators in the following text. E
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Figure 1-11.-C-9245/ARC-161 control
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and the PWR/FILL switch is not in t
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panel is in OFF. If the DTS control
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the keyboard are sent directly. Rec
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the signal data converter, where it
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Navigation is both an art and a sci
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this axis at right angles to it (fi
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. Course is the intended horizontal
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The standard atmosphere is theoreti
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eadings are higher than actual. Thi
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The barometric switch in the RAWS a
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Major ComponentsThe AN/ARN-84(V) TA
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the outputs is used for the automat
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DOPPLERIn the following text we wil
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CHAPTER 3RADARAs an avionics superv
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the antennas will stop at the posit
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AS-2146/APS-115 AntennaThe radar an
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completes the processing of radar a
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In the on-line mode, the sensor sta
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Mode SwitchThe mode switch is pract
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purpose of the horizon line is to i
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Maximum range for tracking is 40,00
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transmit a reply when RF interrogat
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airspeed-altitude computer. All fra
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SIF reply code is identical to the
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In mode 4, the reply video pulse is
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sound wave. The frequency (in hertz
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to affect the rate of travel of the
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DOPPLER EFFECTWhen there is relativ
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Figure 4-7.-Transducer installed on
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The Sonar Detecting-Range Set AN/AQ
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Figure 4-16.-RO-358/ASQ-13A.mechani
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applies 115 volts ac to the transmi
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are known as angles of dip (fig. 4-
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feet in length and represents the f
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compensation is needed for the long
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labeled ALT COMP. This switch is us
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select which signal goes to which p
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the passive directional sonobuoy (f
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REVIEW QUESTIONSQ1. How was the wor
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TACAN signals. When localizer signa
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1. The HEADING NO-GO indicator illu
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Figure 5-7.-New optical sight with
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computer’s program determines whi
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ias circuit, horizontal and vertica
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Figure 5-9.-Symbology—Continued.5
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Figure 5-14.-Sparrow mode.Figure 5-
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TACTICAL DISPLAY SYSTEM INTERFACEFi
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electrical signal, which varies in
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noise-free at that level. The impor
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Like the random interlace, this sys
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The polarity of the signal develope
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The SEC tube has applications in ex
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CHAPTER 6INFRAREDThe term infrared
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Table 6-1.-Characteristics of IR Ra
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potential difference across a PN ju
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system increases, and the reliabili
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used in the Navy, their principles
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signals from the control servomecha
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Figure 6-15.-FLIR positioning/stabi
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Figure 6-17.-Video converter video
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clamping signals from the sync gene
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shared by both azimuth and elevatio
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where they are converted into three
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go to the azimuth/elevation heat si
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TARGET TRACKING SIGHT CONTROLAs men
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control is injected in this module.
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CHAPTER 7WEAPONS SYSTEMSAs a result
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Figure 7-5.-Master light control pa
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Rocket firing systemWalleye systemA
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The wing-form display is displayed
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Figure 7-15.-Emergency jettison con
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The A/A weapon select switch select
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Part of the system consists of unpr
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Figure 7-22.-SH-3 (series) search a
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ottle and the ECU are mounted on to
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Figure 7-25.-Pylon/rack assembly.ci
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REVIEW QUESTIONSQ1. True or False.
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COMPUTER APPLICATIONSTYPES OF COMPU
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the most important. This data manip
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and other data that are to be used
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to represent the same data that was
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compatibility permits the computer
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most cases, the processing speed fa
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4. Stores the results of manipulati
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An overall check of a computer can
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CHAPTER 9AUTOMATIC CARRIER LANDING
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stabilized deck-coordinated system
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Figure 9-3.-Mode I landing sequence
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Figure 9-5.-Lateral automatic wave-
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Precipitation StaticPrecipitation s
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l Sliding-contact interference. Thi
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the signal applied to it. These spu
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the following methods: short circui
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Figure 10-4.-Internal construction
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Figure 10-9.-Methods for using RC f
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Band-Rejection FiltersA band-reject
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Causes of Static ElectricityGenerat
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composed of carbon particles, impre
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APPENDIX 1REFERENCES USED TODEVELOP
Page 235: Chapter 7Airborne Weapons/Stores Lo
Page 238 and 239: CHAPTER 3A1.A2.A3.A4.A5.A6.A7.A8.A9
Page 240 and 241: A7. Linking two or more computers t
Page 242 and 243: FORMULASAIII-2
Page 244 and 245: AIII-4
Page 246 and 247: Comparison of Units in Electric and
Page 248 and 249: Antisubmarine warfare weapons syste
Page 250 and 251: Electrostatic discharge, 10-15compo
Page 252 and 253: Heads-up display (HUD), 5-5air-to-a
Page 254 and 255: NNavigation basics, 2-1airborne nav
Page 256 and 257: Teletype system, 1-22block diagram,
Page 259: Assignment QuestionsInformation: Th
Page 262 and 263: 1-11. What will the Sillumination o
Page 264 and 265: 1-35.1-36.1-37.1-38.UHF-1 does NOT
Page 266 and 267: 1-59. What arethat thetactical1. Fr
Page 268 and 269: ASSIGNMENT 2Textbook Assignment:
Page 270 and 271: IN ANSWERING QUESTIONS 2-22 THROUGH
Page 272 and 273: 2-43. What method does the AN/APN-1
Page 274 and 275: 2-64. What distance is the maximum
Page 276 and 277: 3-12.3-13.The antenna position prog
Page 278 and 279: 3-32. The 128 nautical mile range i
Page 280 and 281: IN ANSWERING QUESTION 3-53,FIGURE 3
Page 282 and 283: 3-74. What is the nominal peak powe
Page 284 and 285: 4-12. Sonar transmission losses can
Page 288 and 289: 4-52. The function of the dual curs
Page 290 and 291: 4-71. The angle between a magnetic
Page 292 and 293: IN ANSWERING QUESTIONS 5-9 THROUGH
Page 294 and 295: 5-29. What component contains theop
Page 296 and 297: 5-51. What type of RF output signal
Page 300 and 301: 6-20. On the HSI, when a tactical m
Page 302 and 303: 6-42. What control(s) the symbolbri
Page 304 and 305: 6-65. Which, if any, of the followi
Page 306 and 307: 7-11. If the temperature of a black
Page 308 and 309: 7-34.A scan mirror is indexed three
Page 310 and 311: 7-56. What is the primary differenc
Page 314 and 315: 8-21. With the landing gear handle
Page 316 and 317: 8-42. With the F/A-18 AIM-9 Sidewin
Page 318 and 319: 8-66. The jettison of wing stores I
Page 320 and 321: 9-13. What method is used to change
Page 322 and 323: 9-36. In magnetic core memories, a
Page 324 and 325: 9-57. What typeaccess toof instruct
Page 326 and 327: 10-12. To maintain the angle-of-att
Page 328 and 329: 10-35. A receiver tuned to 2.4 kHze
Page 330: 10-55. When rubbed against any of t
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Aviation Electronics Technician 1 - Historic Naval Ships Association

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