Q10. What is the function of the panel support? Q11. List the personnel required to perform a JBD emergency lowering? MK 2 NOSE-GEAR-LAUNCH (NGL) SYSTEM LEARNING   OBJECTIVES: Describe the components of the Mk 2 nose gear launch system. Describe the operations of the Mk 2 nose gear launch system. The nose-gear-launch (NGL) equipment is designed   to   assist   in   the   launching   of   aircraft   by providing a positive and automatic means of attaching the   aircraft   launch   bar   to   the   catapult   shuttle   and spreader. This method of launching permits a positive, automatic engagement of aircraft to catapult. Automatic engagement of the aircraft launch bar to the catapult reduces the number of personnel required to be in   close   proximity   to   the   aircraft   during   catapult hookup. The  major  components  of  the  Mk  2  NGL  system include   the   flush-deck   guide   track,   slide   assembly, actuator  reset  assembly,  shuttle  spreader,  and  buffer cylinder    assembly.    These    components    and    their operation are discussed in the following paragraphs. NOSE-GEAR-LAUNCH GUIDE TRACKS The   guide   tracks   (fig.   5-14),   which   guides   the aircraft  launch  bar  into  engagement  with  the  catapult shuttle   spreader   assembly   consists   of   an   approach track,   buffer-cylinder   track,   aft   slide-access   track, forward  slide-access  track,  and  a  forward  track.  The approach   track   contains   a   V-shaped   mouth,   which guides  the  aircraft  launch  bar  into  the  guide  track. Grooves  constructed  in  the  individual  tracks  and  top surface of the buffer cylinder guide the launch bar as the aircraft moves forward. Inserts installed in the forward slide-access  tracks  provide  a  camming  surface,  which ensures that the launch bar makes positive contact the buffer   hook   actuator   roller.   Inserts   installed   in   the forward  track  guide  the  launch  bar  up  and  over  the spreader  assembly  for  proper  launch  bar  to  shuttle hookup. Wheel guides bars are provided to guide the aircraft nose  wheel  along  the  guide  track.  The  inner  wheel 5-15 INSERTS STATION 1 TROUGH COVER (REF) FWD TRACK FWD SLIDE-ACCESS TRACK INSERTS AFT SLIDE-ACCESS TRACK NOSEWHEEL TIRE INNER GUIDE BARS BUFFER CYLINDER TRACK AFT PORTABLE TROUGH COVER (REF) END OF INNER GUIDE BARS NOSEWHEEL TIRE OUTER GUIDE BARS (REF) STATION 0 (REF) REMOVABLE INNER WHEEL GUIDE BARS APPROACH TRACK ABEf0514 Figure 5-14.—Nose-gear-launch guide tracks.