• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
TRANSFER UNIT AND ADAPTER ASSEMBLY - 14024_176
GUN DRIVE AND DRUM DRIVE SYSTEMS - 14024_178

Aviation Ordinanceman 1 - Aviation theories and other practices
Page Navigation
  160    161    162    163    164  165  166    167    168    169    170  
Once the transfer unit/adapter assembly is properly attached, you must make sure that the spring-loaded timing pins release. Adapter Assembly The adapter assembly bolts directly to the transfer unit. During downloading and loading operations, the adapter assembly interfaces with the linkless ammunition loading system (LALS). Q1. Q2. Q3. Q4. Q5. Q6. Q7. Q8. REVIEW NUMBER 3 List the major parts of the drum unit assembly. What component of the drum assembly looks like the threads of a screw? What is the purpose of the retainer gear and steel ball bearings contained in the entrance cover? What component should you use to index the drum for installation of the exit unit? What is the purpose of the two sets of sprocket spur gears located on the scoop disk? What switch in the exit unit prevents expended rounds from being fed into the gun and jamming it? What is the purpose of the sprocket assemblies in the entrance unit? What part of the transfer unit and adapter assembly interfaces with the linkless ammunition loading system (LALS) ? CHUTE ASSEMBLIES The chute assemblies are interlocking segments. They provide a flexible path through which the conveyor elements transport live rounds and expended cases around an aircraft structure. The bypass chute provides a path from the entrance unit to the exit unit, through which the conveyor elements pass. The feed chute provides a path from the exit unit to the adapter assembly, through which the conveyor transports live rounds or unexpended cases. The return chute provides a path from the transfer unit to the entrance unit, through which the conveyor transports expended cases or unfired rounds. The construction of the chute assemblies lets the conveyor elements pass through in only one direction. If the system is rotated in the wrong direction, the element tabs will jam in the chute segments and damage the system.    The chute ends are color-coded red and green to key the right connection to other components. Additionally, each end is clearly marked with a metal labeling plate. This identifies the component to which a particular chute end must be connected. The ends of the chutes are equipped with quick-release latches for ease of removal and installation. CONVEYOR ASSEMBLY The conveyor assembly consists of individual conveyor elements shaped to cradle a 20-mm case. The elements are joined together by removable hinge pins to form an endless conveyor assembly. (See figure 6-13.) During system operation, the conveyor receives rounds of ammunition from the exit unit and delivers them through the feed chute to the transfer unit. The conveyor also receives expended cases and unfired rounds from the transfer unit and transports them through the return chute to the entrance unit. After receipt by the entrance unit, the expended cases and unfired rounds are removed from the conveyor elements and stored in the ammunition drum. The empty conveyor passes from the entrance unit to the exit unit through the bypass chute. Positive control of the conveyor elements is maintained by tabs on the conveyor elements, which engage guides in the chutes, exit unit, entrance unit, adapter assembly, and transfer unit. The total number Figure 6-13.—Typical conveyor element assembly. 6-13







Western Governors University

Privacy Statement
Press Release
Contact

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