Page 1 - Combined_155_OCR

INTER COMPANY CORRESPONDENCE

i nt I’A I I;.
October !), I 96!)
Special bs i-1< i
‘Hi ole idevelopment Engineering Olilci High land Park
f ■. M Engineering Hunts vi Hi'

1 : . 1 n I Cowl 1 ■ est s

During h? wi
race version of
i! i lodge Char nd . r; lain a to Talladega International Speedway for the purpose
lee ting data. ger
iijufiou c hood ahd cowl scoops used for inducing carburetor inlet
'has memo rev
the results from those tests.

>a in. tested. Tin first configuration utilized the normal
- '> s< uxa e i c: wl area, co feed the carburetor while the second configuration
sp cinJ.lv d o'd lir -h hood scoop (called i N.A.C.A. inlet) to ooiain
carburetor
P ‘ two .ocig.r:: < ms ,nr sketched in E’gure 1.

■alien I were made by the addition of several sired deflec
CO W •' ! lotah- a.- shewn in Figure 2 Phrcc pressures were
i
• tr: a static pressure (Ps)> which was measured by
>S
fH-ureter inlet wall , total, pressure (Pg*), measured by
) i
’■‘.•Sv air How at the carburetor inlet and on a plane in
V I I,
/naniic pressure (q), which was a. physical summation of
1

a \
f
4

T?0t)
Ea)()

T)(W

i ae m •? red. V'.; h
! J. .c UO d iii. both ■ oi P,, laid q at the various engine BPM'S . Significant
<■ m.d q with no trends apparent . This phenomenon as
4
to a var iaoh • di.rou k
t iling- being required from one condition to the next io
C‘ ’ ■ desired mm wd engine RPM value.
'3 I I ' b: R( location of the static pressure, mea -
it to d..e went: n i oj immediately pre
cording the carburetor intake removed
? Duf.a -od !!ti: t ci of this pressure and to some degree
established trends