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LAU-115 SERIES GUIDED MISSILE LAUNCHER - 14313_98
LAU-117/A GUIDED MISSILE LAUNCHER - 14313_100

Aviation Ordinanceman - Aviation theories and other practices
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forward missile-mounting button. The external rail flanges are a guide for the aft missile suspension lugs during firing. The aft section of the rail consists of a removable fitting that provides mounting for the aft missile suspension lugs. REVIEW NUMBER 6 ANSWERS A1. The LAU-7/A missile launcher is used to carry and launch the Sidewinder missile. A2. The  four  major  assemblies  of  the  LAU-7/A launcher include the housing, nitrogen receiver,  mechanism,  and  power  supply  as- semblies. A3. The  nitrogen  receiver  assembly  is  used  to store high-pressure nitrogen (3,200 psig) that is  used  to  cool  missile  IR  detector  guidance systems. A4. The  detent,  detent  lock,  detent-lock  solenoid, and snubber subassemblies of the mechanism assembly  are  an  electromechanical  system that restricts longitudinal and lateral movement of mounted missiles. This prevents accidental launch or release during catapult takeoffs or arrested landings. A5. The LAU-7/A guided missile launcher provides a complete system that lets the pilot monitor  the  condition  of  the  missile  during flight,   control   mode   of   operation   of   the missile guidance system, and initiate arming and launch sequence. The latch mechanism is composed of a detent cam and keeper. The detent cam is spring-loaded down and acts   as   a   stop   during   missile   loading.   The   cam mechanism  is  constructed  so  the  force  created  by  the missile motor during normal missile firing overcomes the  detent  cam  spring  tension.  This  action  lets  the missile  button  push  the  detent  cam  up,  actuating  the missile-gone switch. An electrically operated solenoid is used to assure that the missile is retained during sudden deceleration, such as an arrested landing. The keeper portion of the latch mechanism is spring-loaded to the down position and  retains  the  missile  during  all  periods  of  aircraft acceleration.  The  keeper  mechanism  has  an  indicator. When the keeper is in the down or latched position, the indicator  is  flush  with  the  launcher  skin.  If,  during missile   loading,   the   missile   button   is   not   in   its maximum   forward   position,   the   indicator   extends beyond  the  upper  launcher  mold  line.  This  indicates that the missile is not properly latched in place. During loading,  the  missile  button  can  slide  past  the  keeper, stopping when contact is made with the detent cam. During the unloading of a missile, the indicator bell crank  is  supported  in  the  launcher  structure.  Using  a 3/8-inch  square  drive  tool  manually  operates  it.  The square drive end of the bell crank is accessible from the side of the launcher. The launchers are suspended from BRU-32   bomb   racks   in   the   outboard   pylons.   Two LAU-7/A launchers can be attached for suspension of the AIM-9 missiles. For ground safety, an actuator-operated  safety  device  prevents  inadvertent loss of the AIM-7 missile. LAU-116/A GUIDED MISSILE LAUNCHER The   LAU-116/A   guided   missile   launcher   (fig. 3-22)  is  a  reusable  launcher  of  the  F/A-18  aircraft 3-25 Figure 3-22.—LAU-116/A guided missile launcher.







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