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Flight Dynamics Principles, 2nd Edition
book

Flight Dynamics Principles, 2nd Edition

by Michael V. Cook
February 2011
Beginner to intermediate content levelBeginner to intermediate
488 pages
17h 21m
English
Butterworth-Heinemann
Content preview from Flight Dynamics Principles, 2nd Edition
Ch09-H6927.tex 20/6/2007 16: 36 Page 231
Stability 231
Only terms in alternate powers of s are included in the auxiliary function (9.12)
commencing with the highest power term determined from the row of the array from
which it is derived. The auxiliary function is differentiated with respect to s and the
resulting polynomial is used to replace the zero row in the array. Equation (9.12) is
differentiated to obtain
4s
3
+8s = 0 or equivalently s
3
+2s = 0 (9.13)
Substituting equation (9.13) into the third row of the array (9.11), it may then be
completed in the usual way:
s
5
s
4
s
3
s
2
s
1
s
0
143
286
120
460
0.500
600
(9.14)
Inspection of the first column of the array (9.14) ...
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Publisher Resources

ISBN: 9780750669276