• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
RIGHT-FRONT PANEL
Catapult Launching Log Sheets

Aviation Boatswains Mate E 3 & 2 - Aviation theories and other practices
Page Navigation
  187    188    189    190    191  192  193    194    195    196    197  
• Hold back track filler blocks Communications The communications system among the various catapult stations should be thoroughly checked out. Sufficient sound-powered phones should be on hand to replace those phones that are inoperative. NOTE Hand signals used in the spotting and launching of aircraft during catapult operations are found in the Air-man manual, NAVEDTRA 12000 and in NAVAIR 00-80T- 105, the CV NATOPS Manual. OPERATIONS Preliminary functional tests are performed by all operating personnel. These tests consist of at least two no-load launchings, during which the control system is operated through its complete cycle. The functioning of as many component parts of the catapult as possible should be observed by personnel at the various stations during the preliminary functional tests. All malfunctions must be reported to the catapult officer or petty officer in charge. During periods when no aircraft are to be launched but the catapult is in a UP status, execute all preopera- tional inspections, including firing of two no-loads, using the lubrication system liberally before each launch and retraction. This should be accomplished every 2 weeks. No-Load Test Launchings No-load launching pressures are according to the data given in the preoperational inspection on MRCS. At no time must no-loads be fired with pistons out of the BATTERY position. Station sufficient personnel along the catapult track to ensure safe operations while testing the catapult. Perform the following steps before the no-load test launchings begin: 1. Remove and stow the track slot seal. Assure that the launching area is clear. 2. Position all valves, gauges, and vents according to tables in the current MRCs. 3. Check that all communications are complete. 4. Check that track covers and shuttle spreader are secure. 5. Check the operation of all pumps and motors. 6. Visually check the condition of the water brakes and piston spears. 7. Check to ensure that the water level in the water-brake reservoir is within 6 inches of the bottom of the safety screen. 8. Check the water-brake pump suction, discharge, and cylinder elbow pressure. The pump gland should not leak more than a few drops per minute. Check the bearing temperature and watch for any sudden rise in temperature. 9. Maintain a close watch on all pressures and temperatures and adjust as necessary. 10. With the retraction engine accumulator charged to the required operating pressure, set the bridle tensioner pressure regulator valve to give the required tensioning force at the shuttle. 11. Ensure that the lube supply tank is filled to the proper level. 12. Turn the lubrication pump ON. 13. Assure that launching steam bypass valves (for internal preheat) are CLOSED. 14. Charge the steam receivers to the appropriate no-load pressure setting. 15. Be sure cylinder elongation is within scale for the type of catapult. 16. Be sure the hydraulic system is filled, vented, and properly charged, with no leakage from the piping. 17. On C-13 catapults, check that low-pressure air is available to the air-operated solenoid valves. NOTE The low-pressure air is secured to the deck tensioner during no-loads. This is done to prevent the tensioner piston from extending and knocking out STANDBY or possibly causing damage to the grab. 4-64







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.