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                                                                                 ■ • •         . . . . '.
                                                                            i-iLE              i DATE
                                                                            CODE               ! March <4* 1968
   TO - HAME                           DEPT,                       DlViSJON               fLANT/OFFICE
             24* Ik Dawley                    3860                Engineering Office       Highland Park
   FROM ■■ NAME                        DEPT.                       DIVISION               PLANT/OFFicE
             Fv 'W* Beady                     3860                Engineering Office       Highland Park

              Px^oposed E^R/W Wind...Tunnel,Tests


              Outlined below are three wind tunnel test programs proposed for ’*EW Series
              B-Body race vehicles* The estimated material cost and man hour requirements of
              Department 3860 are detailed along with a brief description of the tests
              that would be conducted under each program*







                 At least 6 weeks of tunnel time will be involved in which the 1st 2 weeks
                 will be utilized in ground plan& adjustments, securing basic drag ratings
                 and setting up instrumentation on each lof the three models* The third
                 week will, be needed to make blockage correction studies needed as a basis
                 for better interpretation of yawed .model performance in terms of road
                 behavioro The remaining 3 weeks will be used for various model
                 changes and the determination of the performance factors associated with
                 them- It is anticipated that these tests will be conducted during July
                 and August with a test report to follow in Septembero The list of things
                 to be considered includes:

                                 spoilers - reax- deck, front undex*body5 etc*
                                 front end modifications
                                 greenhouse and roof     mod x fications
                                 vehicle attitude
                                 wheel house opening  J (X
                                 surface pressures
                                 etc*

                 Equipment Required;  1*        (1J base test model ■■•ith interchangeable EM23,.
                                               EW-23 and Bk-29 front ends and greenhouses

                                                Cost £-20,000

                                           2*   (1J ground board - new ground board with
                                               trailing edge flap for stagnation
                                                point adjustment

                                               Cost Si.000

                                           3o (6) weeks of wind tunnel rental - .Wichita State
                                               University
                                                Cost 115-000












  110-7870 REV. 2-63
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