There are some typographical errors in Etkin's B747 model on p.166, 3d. edition. They may not be essential, but they can bite you if you try to use his models for verifying your own thinking.
The Imperial ( ft, lbf ) values in Table 6.2 are consistent with his eigenvalues and eigenvectors.
However, the SI part of the table has an exponent misprint in Mw. The value should be :
Mw = -1.563e5
Another peculiar error is in the value of
Czû in Table 6.1.
The value matching Table 6.1 would be ****.
This is also much more in line with p.****,
which shows that from physical reasoning,
the non-dimensional value should be around
- 2 CL,
and p.165 states that :
CLo = 0.654
Etkin has the unfortunate habit
of ending every chapter
with an incremental list of symbols.
This makes his notation sometimes hard to track.
The time derivative
of α in Table 6.1
is made non-dimensional by an extra term of
(c / 2V) relative to
α
For the eagle eyed,
there is a caret on top of the dot
in the α