# DRA and DRT Systems

Home > Preview

The flashcards below were created by user CVN68 on FreezingBlue Flashcards.

1. What CKTs does the DRA combine to determine and indicate on appropiate counters, the total distance in a north/sought and east/west direction?
• Underwater Log
• CKT LC
2. What CKT provides an input to the distance converter?
CKT Y
3. What component(s) does the distance motor drive in the DRA?
• Total miles counter
• Component disks
4. The north counter counts _____ for north, and _____ for south.
• Up for north
• Down for south
5. The east counter counts _____ for east, and _____ for west.
• Up for east
• Down for west
6. What CKT provides an input to the ships course crank-arm mechanism?
CKT LC
7. What is the output of the DC stepping transmitters in the DRA?
• Proportional to ships speed in north/south direction
• Proportional to ships speed in east/west direction
8. What component in the ships course crank-arm mechanism receives the ships course input?
9. What is energized when the brush rigging and split-ring assembly make contact?
10. What is the CKT designation for the dead reckoning system?
CKT TL
11. What is a direct course that is north, south, east or west?
Cardinal course
12. What is the course called that is northwest, northeast, southwest, southeast?
Inter-cardinal course
13. What repositions the roller carriages on the guide rods?
Crank-arm mechanism
14. What provides a graphical plot of own whips travel, and operates dials that indicate latitude and longitude?
DRT
15. How many tracking mechanisms are there in the DRT?
4
16. What are the modes of operation for the DRT?
• Standard
• 200 YDS per inch
17. When is the latitude and longitude switch ('T' siwtch) used?
• Set to the proper quadrant of the earth in which the ship is operating
• Change it when you cross the equator or meridians so the dials will move in the proper direction
18. When is the component interchange switch ('Z' switch) used?
Orients north in two different directions
19. Where is the range bearing projector mounter?
On the pencil carrier
20. Where does the DRT receive input from?
DRA

### Card Set Information

 Author: CVN68 ID: 166797 Filename: DRA and DRT Systems Updated: 2012-08-21 03:26:18 Tags: Advancement Folders: Description: Advancement Show Answers:

Home > Flashcards > Print Preview