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MK 432 MOD 4 AIRBORNE TORPEDO PRESETTER TEST SET
REVIEW NUMBER 3 ANSWERS - 14313_395

Aviation Ordinanceman - Aviation theories and other practices
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REVIEW NUMBER 2 ANSWERS DESCRIPTION TEST SET A1. Used to evaluate the operational   readiness   of the Walleye weapon guidance  section  cockpit television display C.   AN/DSM-77 A2. Used to perform the operational  checks  of  the AIM-9  missile  launching, visual   target   acquisition system (VTAS), and Side- winder expanded ac- quisition mode (SEAM) E.   AN/ASM-464 A3. Used  to  check  the  VTAS/ SEAM  system  on  AIM-9 missiles A.   TS-3279 A4. Used  to  verify  the  opera- tional status and function of    the    AIM-7    Sparrow missile  on  the  F-14  air- craft D.  Sparrow missile test set A5. Used   to   perform   circuit continuity tests on Mk 46 torpedo preset circuits B.   B203 torpedo heat  and  control system test set The Walleye MOAT also requires at least three persons and a DSM-77 test set. The DSM-77 test set projects a test image to be received by the Walleye. With  the  cockpit  switches  ON,  as  listed  in  the checklist,  the  Walleye  dome  cover  removed,  and  the tester mounted on the weapon and switched to LIGHT, a  display  appears  on  the  aircraft  monitor.  When  the tester   is   switched   to   LIGHT-MOTION,   the   image moves  from  side  to  side,  diagonally,  or  up  and  down, depending  upon  the  position  of  the  tester.  The  tester control   assembly   is   rotated   around   the   foundation assembly   during   the   testing   process.   During   each position test, the person in the cockpit pulls the trigger switch and the weapon's television camera will lock on to one of the target dots and follow it as it moves. As each  test  is  completed  for  each  weapon  loaded,  the dome cover should be replaced. WARNING During   MOAT,   or   any   other   test   being performed after weapons have been loaded on the aircraft, the MASTER ARMAMENT switch  must  NEVER  be  placed  in  the  ON position. When   performing   aircraft   release   and   system control checks, you should always use the step-by-step procedures (checklist) provided in the aircraft loading manual.  A  few  safety  precautions  must  be  observed when  performing  aircraft  release  and  system  control checks. These precautions are listed below. 1. Before you begin an aircraft release and system control check, make sure the aircraft is parked in  a  designated  area,  secured,  and  electrically grounded. 2. Before  you  apply  external  electrical  power  to the  aircraft,  make  sure  all  cockpit  switches have  been  positioned  to  OFF,  NORMAL,  or HOLD. If required, apply external air conditioning. 3. Release and control system checks will not be performed with weapons loaded on the aircraft. Checks may be performed with airborne stores (fuel  tanks,  empty  MERs/VERs,  pods,  etc.) installed   on   the   aircraft   stations,   provided cartridge  retainers,  breech  caps,  and  ejector cartridges are removed. 4. Test    equipment    should    only    be    used    by personnel who have become qualified through an  established  qualification  and  certification program. Stray voltage checks are normally performed with the  weapon  loaded  on  the  aircraft,  but  they  are  made before  making  an  electrical  connection  between  the weapon  and  the  aircraft.  Additionally,  this  check  is normally  performed  after  the  aircraft's  engines  have been started and all aircraft preflight checks have been completed. The stray voltage check is performed at the last possible moment before the aircraft takes off. This is  to  ensure  that  no  voltage  has  been  induced  in  the aircraft  firing  circuitry  from  external  sources,  such  as the ship's radar. The launcher electrical safety pin must not  be  removed  until  the  aircraft  is  positioned  on  the catapult for takeoff. REVIEW NUMBER 3 Q1. How many persons are required to perform a MOAT on a Sidewinder missile? Q2. In  what  position  should  the  MASTER  ARM switch    be    set    when    a    MOAT    is    being conducted on a naval aircraft? 16-14







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