The concept that changed my way of thinking about VORs was that of the
"Poor man's HSI" published in IFR Refresher. Basically, superimpose
an imaginary airplane centered on the VOR dial with the nose pointed
at the OBS bearing that corresponds to your current heading. The
needle of the CDI now represents the location of the selected radial
with respect to the airplane flying that heading. It is easy to do
intercepts this way. Think of an OBS set at 090 degrees and you have
a right needle and a TO flag, for example. How would you intercept?
Put an imaginary airplane in the center of the dial with the nose
pointed at 120, for instance. That would intercept because the
airplane is flying toward the right deflected needle. This works out
best graphically with a VOR indicator that uses has a lateral
displacement needle rather than one that pivots from the top or
bottom, but both work. Would the intercept be TO or FROM the station?
If the TO indicator is showing at the top you would be intercepting
TO the station since your airplane is pointing toward the top of the
dial. If you put the imaginary airplane at a heading 210 you would
also intercept but heading is taking you away from the station. If
you put the imaginary airplane at a heading of 070 you would clearly
be flying away from the selected radial and would not intercept.
Tim Bengtson wrote in message .. .
Koopas Ly wrote:

What is meant by reverse sensing?

Here's a site that may just change your life:

http://www.campbells.org/Airplanes/VOR/vor.html

Tim