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_-_ -==: --r------~--
C/ass//. Medium-weight,low-to-mediummaneuverabilityairplanes,suchas
heavy utility/search and rescue, light or medium transport/cargo/tanker, reconnais-
sance, tactical bomber, heavy attack, and trainer for class II-
Short-period mode. The damping ratios ofthe short-period mode4.S for var-
ious levels of flying qualities for category A, B, and C fiight phases are given in
Table 6.2.
594 ' PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL
Table 63 Linuts oncO:Z,,p/(nlo:)
-. --_--_ =-___-_---==-;--__--:
CatA, CatA, CatB, CatB, CatC, CatC,
min max min max min max
---- --~--
Levell 0.28 3.6 0.085 3.6 0.16 3.6
Levelll 0.16 10,0 0.038 10.0 0.096 10.0
Levellll 0.16 N 0.038 ~ 0.096 N
-:-r ----------~ =:=-------------
In Table 6.3, n is the load factor as given by
L
n -. W
I
21p \/2SCL
=W
For linear range of angle of attack,
n
-. = (2~) p\/2SCl.a,
a
(6.292)
(6.293)
(6.294)
Ro//mode. The maximum allowable values ofthe roll-subsidence mode time
constant4 are shown in Table 6.4.
Dutch ro//. The Dutch-roll flying qualities4 are specified in Table 6.5.
Table 6.4 rfime constants for rollsubsidence mode
~-_-- ==::-_;--.-__
Oass Categor)r Levell Levelll Levellll
-_-- -- -----
I,IV A 1.0 1.4 10.0
ILIII A 1.4 3.0 10.0
All B 1.4 3.0 10.0
I,IV C 1.0 1.4 10.0
II,III C 1.4 3.0 10.0
-r-----.----- -~~ 1-
AIRPLANE RESPONSE AND CLOSED-LOOP CONTROL 595
Table 6.5 Dutch-rojlflying qualities
---_-. -_-_--_-
-- N--
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PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL4(4)
