曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

where Ce and c are the mean aerodynamic chords of the exposed wing and total
(theoretical) wing, respectively; (CLq)e and (CLq)B are the contributions of the
exposed wing and isolated body, respectively. The wing-body interference param
eters KB(W) and KW(B) can be obtained using the data given in Chapter 3. The
value of (CLq)WB given by Eq. (4.488) is per radian.
   For subsonic speeds]
where
(CLq)e = (~ + 2g)(CLcr)e
g:x
    c
(4.489)
(4.490)
x = (Xac)e - Xcg,le                                (4.491)
Here, (Xac)e iS the distance of the exposed wing aerodynamic center from the
leading edge of the root chord, and Xcg,te iS the distance of the center of gravity
from the leading edge of the exposed wing root chord. Both (Xac)e and Xc8Je are
measured parallel to the exposed wing root chord.
      The parameter x will be positive if the aerodynamic center of the exposed wing
(Xac)e iS aft of the center of gravity as shown in the insert at the top of Fig. 4,20.
The lift: curve slope of the exposed wing (CLa)e and the aerodynamic center of the
exposed wing (Xac)e may be estimated using the procedure discussed in Chapter 3.
    For supersonic Mach numbers, Datcoml gives
                                        (CLq)e = (C2q)e + 28(CNa)e                           (4.492)
For low supersonic Mach numbers when the leading edge is subsonic or f3 cot ALE
< 1, the data7 is somewhat sparse and is not given here. The interested reader may
refer to Datcoml
      For higher Mac                           irhen theleading edge becomes supersonic or p cot A
> 1. the p._'irt;~,j~f_u{:sented in Fig. 4.20 for typical wing sections. For
                                                         rder may refer to Datcoml
dataonotherwin ;bth~nriecadp -:)'
       The body cont                                             (:e2e )sB (j:e,                                             (4.493)
                              (CZ,q)B = 2((
     (C;a,)B=(Cla)B(S )   (4.494)
                                (CLcr)B = 2(k2 - k,)(SV:,, )                     (4.495)
c
r:
lr
l:
l-
 ;.
 .'J
394             PERFORMANCE, STABILITY, DYNAMICSr AND CONTROL
taper rat1o=o.2s
(CLq) e
(C2q)e
~-~   A = 30o
-~-~   A = 45o
--.--.-  A = 600
taper rat1o=0.5
Aspect Rat1o=2.0
Aspect Rat1o=4.0
Mach Number
(CJ.q)
2
Z
 -2
 -4
┏━━━━━━━━━━━━━━━━━┓
┃O_-A                              ┃
┣━━━━━━━━━━━━━━━━━┫
┃         r-     .                 ┃
　
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