Page 117 - Planning and Design of Airports
P. 117

86     Airp o r t  Pl anning


                              TOR = TOD − CL                          (2-7c)
                                   1      1    1max
                                FS = TOR                              (2-7d)
                                   1     1
                 Engine-failure takeoff case:

                                     FL = FS + CL                      (2-8)
                                       2    2    2max
                 where

                                 TOD = D35                            (2-8a)
                                     2     2
                                CL    = 0.50(TOD − LOD )              (2-8b)
                                   2max         2      2
                                 TOR = TOD − CL                       (2-8c)
                                     2      2    2max
                                   FS = TOR                           (2-8d)
                                     2      2
                 Engine-failure aborted takeoff:

                                      FL = FS + SW                     (2-9)
                                        3
                 where

                                        FL = DAS                      (2-9a)
                                          3
                 Landing case:

                                        FL = LD                       (2-10)
                                           4
                 where

                                             SD
                                        LD =                         (2-10a)
                                              .
                                             060
                                        FS = LD                      (2-10b)
                                          4
                    To determine the required field length and the various compo-
                 nents of length which are made up of full-strength pavement, stop-
                 way, and clearway, the above equations must each be solved for the
                 critical design aircraft at the airport. This will result in finding each of
                 the following values:

                           FL  = max [(TOD ), (TOD ), (DAS), (LD)]    (2-11)
                                         1      2
                           FS = max [(TOR ), (TOR ), (LD)]            (2-12)
                                         1      2
                          SW = [(DAS) − max (TOR , TOR , LD)]         (2-13)
                                                1     2
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