The Bezel and fixed inner scales are used
for determination of ground speed
problems. Two of the following quantities
are available for its solution: time,
distance, ground speed.
Example:
Known: Distance and Time.
Required: Ground Speed.
A pilot finds by the use of checkpoint that
he has traveled 104 miles in 35 minutes.
What is the ground speed?
Solution:
Move the Bezel scale until 104
on the mobile scale is set opposite 35 on
the fixed scale. Opposite the hour index
(the arrow marked "MPH" directly over the
hour 12) read 178 miles per hour on the
Bezel scale.
3: CALCULATING GROUND SPEED
(1)
1 0
9
MPH INDEX
