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APPENDIX III ANSWERS TO REVIEW QUESTIONS - 14310_305
APPENDIX III ANSWERS TO REVIEW QUESTIONS - 14310_307

Aviation Boatswains Mate E - Aviation theories and other practices
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A3. The launch valve steam valve admits and shuts off the flow of steam to the launching engine cylinders during operation. A4.  The  launch  valve  stroke  timer  electrical  system  measures  launch  valve  per- formance. A5.  To prevent the exhaust valve from opening while the launch valve is open. A6.  The shuttle assembly by means of a launch bar attached to the aircraft nose gear and connected to the catapult NGL spreader? A7.  The lubrication system provides a means of lubricating the launching engine cylinders? A8.  The retract permissive and maneuver aft circuit. A9.  Capacity of 90 gallons. A10. The retraction engine and drive system is used to return the launching engine pistons and shuttle assembly to the battery position after each launch. A11. Control is divided between the ICCS and the CCP. A12. The deck edge signal box indicates the readiness of the catapult. A13. No loads are conducted during the accomplishment of preoperational MRCs and may also be required during post maintenance check out. A14. After 10 seconds. ANSWERS TO QUESTIONS FOR LESSON 5 A1.  The  operating  gear  assembly  provides  the  means  of  physically  raising  and lowering the JBD panels. A2.  The Mk 7 Mod 0 JBD consists of 14 tube assemblies. A3.  The swivel joint permits rotational movement of the piping during raising and lowering of the JBDs. A4.  The maximum temperature of the cooling water is 210°F. A5.  The four-way control valve (stack valve) controls the hydraulic fluid to and from the hydraulic cylinders. A6.  The stack valve is a four-way, solenoid controlled pilot operated valve. A7. The difference between the deckedge and the auxiliary panels is none, because they are identical. A8.  The double indicator light indicates low cooling water pressure and high cool- ing water temperature. A9.  The “all” raise switch permits raising and lowering of all JBD panels simul- taneously. A10. The  panel  support  is  used  to  lock  the  JBD  panels  in  the  raised  position  for maintenance or emergencies. A11. The personnel required for an JBD emergency lowering are: 1. Topside safety Petty Officer (overall in charge) 2. Topside JBD phone talker 3. Below decks phone talker/valve operator 4. Two personnel to install emergency lowering device AIII-6







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