RMI

Question 1

RMI - Radial Magnetic Indicator

Answer 1

Tail tells the tell - where we are (yellow tail on RMI)

***VOR - 360 radials radiated OUTWARDS, the 270 RADIAL means the tail of the tell is POINTED to the 270, and the direction to the VOR is the arrow at the 90 radial!!

***GPS - waypoints - go TOO the station, “bearing” for NDB

Luber line - tells heading
Single bar pointer (green arrow, #1 needle) - Can go to an NDB, or in NAV it can track to the GPS, or in V-lock can track to a VOR.
Double bar pointer (yellow arrow, #2 needle)- can be selected to track to an NDB (ADF) or a NAV (VOR).

45* degree indices help with indicating degree difference (there are 8)

Heading flag sticking out means that the heading card is stuck and the RMI is no longer working. The arrows will continue to point to the nav aid (VOR) or ADF.

reciprocal is opposite… reciprocal of heading is the opposite direction

Question 2

Pilot’s slave control unit

Answer 2

Slaves a pilot’s HSI and the Copilots RMI

Allows for fixing inaccurate compass readings

Question 3

Rough distance

Answer 3

When our green arrow (NDB) is 90* degrees off our heading, we are in line with it and thus we can get a rough approximation of position top the VOR we are headed to.

The point of the yellow indicator points to the station and is the course to fly. Tail shows aircrafts relative position from the VOR. No distance obtained yet.

Question 4

Cone of confusion

Answer 4

When arrow gets to 90* degrees, we are “abeam” the VOR

Question 5

Course intercepts

Answer 5

Standard intercept is a 45* degree angle

Expedited intercept is a 90* angle

• *Course interception
  1) orient (present position)
  2) locate the course to be intercepted
  3) count 45 degrees from the course we want to the toward the direction of the needle (90 degrees for expedited)
  4) turn to intercept heading
  5) wait for indicator to reach desired course heading
  6) turn to new course

Radial outbound

• outbound the tail rises as well (inbound too)
• same as above, just around the radial (tail) side of the yellow #2 needle

NDB/VORTAC
- same as above, but green arrow now

Question 6

Homing vs Tracking

Answer 6

‘’’Initial correction: 20* degrees at 90kts or above

First trial: apply half half the initial correction after course reinterception (10* degrees)
*too little correction: repeat initial correction to return to course

Second trial: increase correction by applying 1/2 of the first trial (10* + 5*)
**too much correction: turn parallel to course, allow for drift back to course, then decrease correction

Bracketing process: continue process until drift stops

Strong winds: 40* degree correction or more may be needed

Tracking - the original heading without wind factored in. When corrected by wind, the NAVAID will point in the same direction as THE ORIGINAL HEADING

Corrections based on degree shift are all revolved around the ORIGINAL HEADING

Applies for both inbound and outbound - correction in the direction the arrow head is pointing