Page 2 - Combined_83_OCR
P. 2

Attachment 2






                                 TABLE I. MEASURED CARBURETOR PRESSURES*





              Configu­                                  RPM = 3700       RPM = 4500       RPM = 5200       RPM = 6000
             ration No.          Description
                                                          Ps       q       ps       q       Ps      q        Ps      q

               1          BASE LINE                      .030    .110     .015    .134    -.045    .284    -.239     -


               1A         Modified by the addition       .030    .104    -.011    .134    -.045    .269    -.209    .538
                          of a 11/2" deflector over
                          cowl intake (inside vents
                          open)

               IB         Same as 1A except inside       .015    .082        0    .194    -.104    .343    -.328     -
                          vents closed

               1C         Modified by the addition       .015    .119        0    .149    -.075    .358    -.224     —
                          of a 1 3/4” deflector
                          over cowl intake (vents
                          closed)


               ID         Modified by the addition       .011    .134   -.015     .209    -.089    .299    -.328
                          of a 3 1/2” deflector
                          over cowl intake (vents
                          closed)

               2          NACA INLET                    -.015    .119   -.028     .224    -.112    .388    -.388     -


               2          NACA INLET (Rerun)            -. 030   .104        0    .209   -.284     .448    -.478     -




               * All pressures are gage pressures in pounds per square inch.
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