Static balance, continued
RESTRICTED
one cardinal heading should be sought. Then
sight should
faced upon the opposite cardinal
heading.
it may
well be trat the gyro will not
give the same
reading for apparent easterly pre-
cession on this heading.
It is of no avail to try
to force it.
it should be recognized that because
of some natural
force. normally causing excessive
north hook, the gyro will not
on these two head-
ings, precess the computed distance.
The princi-
ple now is to work
on the opposite headings alter-
nately until apparent easterly precession
is equal
on both. It will now doubtless be found that north
hook does not equal the computed distance (three
four minutes at the Denver latitude,) but
obviously the correct amount cannot be gained by
attempting to rebalance; the trouble lies with
flexible lead drag,
bearing drag, or pendulousness
or mechanical defect.
If north hook
were excessive and it was found
excessive flexible lead
bearing crap, er pendulousness, and the cause of the
excessive flexible lead drag,
or bearing drag, or
pendulousness were
removed, it would be found
(I) easterly precession (apparent) would increase
to the
stated
mathematical amount and (2) that
would decrease to the stated amount
121