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GUN DRIVE AND DRUM DRIVE SYSTEMS - 14313_150
F-14 GUN SYSTEM INSTALLATION - 14313_152

Aviation Ordinanceman - Aviation theories and other practices
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after gun firing to ensure that all gases are cooled and purged. The F/A-18 gun gas purge system uses engine bleed air and has an additional gas control provided by a hydraulically actuated ram-air scavenge door that opens automatically during gun-firing operations. The gun gasses are vented through louvers in the lower mold line of the aircraft fuselage. REVIEW NUMBER 4 Q1. What chute provides a path from the exit unit to the adapter assembly? Q2. What chute provides a path from the transfer unit to the entrance unit of the drum? Q3. What  is  the  purpose  of  the  gun  gas  purge system? Q4. Describe the difference between the gun gas purge  systems  of  the  F-14  aircraft  and  the F/A-18 aircraft. M61A1 GUN SYSTEM INSTALLATIONS LEARNING   OBJECTIVE:   Identify   M61A1 gun system installations to include those used on the F/A-18 and F-14 aircraft. M61A1   gun   and   ammunition   handling   system installations have the same basic components. However,  some  components  are  peculiar  to  specific aircraft.    These    differences    are    discussed    in    the following paragraphs. F/A-18 GUN SYSTEM INSTALLATION The   F/A-18   M61A1   gun   system   (fig.   6-14)   is internally  mounted  in  the  nose  of  the  aircraft  on  the centerline. The fired projectiles exit the aircraft through the gun blast diffuser assembly, located just forward of the  cockpit  windscreen.  Depending  upon  the  mission objective, the gun can be operated in the air-to-ground (A/G)  or  air-to-air  (A/A)  computer  mode.  There  are two A/G modes—continuously computed impact point (CCIP)   and   manual   (MAN).   There   are   three   A/A 6-15 Figure 6-14.—F/A-18 M61A1 gun installation.







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