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                                    - 0.2020
                    '     x-, = (-., ) - (-,,,.),;
           Cre
                                            -. 0.2020 - 0.5266           '
                             - -0.3246
             xa
                                        -.. = (-,,.) (-: )
                       c'
                                - -0.3:
      _ }.3246(688~~;2)
                             - -0.4263
                                          ~
 Substitution of all these values gives
                                (Cnp)A.W _ 0.0608]rad
                           C7- :
                                          = O.OOllldeg
 The combined wing contribution because of dihedral and sweep is then given by
                       (CnP)wing = (-O.OOOICL +O.OO11C2)/deg
 The fuselage contribution is given by
                        (Cnp)B,W, = [-KNKR, (SS  ) (b)] 7deg
where KN and KRI are to be obtained from data given in Figs. 3.73 and 3.74.
Using data given in Example 3,2, we get hj : 2.7838 m and h2 - 3.048 m
so that J~ ff/ = 0.9556. Furthermore, we have h - d f.max = 3.048 m so that
h/b f.max -- 3.048l3.2715 = 0.9317, xm~lf  = 15.9334l23.2410 - 0.6856, and
ClSB.S = 23.24102l60.75 -. 8.8913. With these values, we get KN - 0.0016.
        To find K Rt, we need.to find the Reynolds number based on the fuselagelength lf ,
 wluch is 23.2410 m. At an altitude of 8500 m, the kinematic viscosit)r is 3.05 x lO-s
m2/s, and the speed of sound is 305.0 nVs (see Appendix). This gives us a flight
velocity of 213.5 m/s and a Reynolds number (Vlf /v) of 16.27 x l07. Then we
obtain K RI  = 2.06 from Fig. 3.74. We have SB.S  = 60.75 I112, S =  106.0114 1112,
and b - 17.3228 m. Substituting these values in the above equation, we get
                            (Cnp)B(W) = -0.0025]deg
.     1
   : 7.}
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290           PERFORMANCE, STABILI-fY, DYNAMICS, AND CONTROL
    Now we will evaluate the vertical tail contribution, which is given by
                                                 (Cnp.V)nx = kap (1 + ~p )  7 , V2
　
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