<DOC>
<DOCNO>
971
</DOCNO>
<TITLE>
surface pressure distributions with a sonic jet normal to adjacent flat
surfaces at mach 2.92 to 6.4 .
</TITLE>
<AUTHOR>
cubbison, r.w., anderson, b.h. and ward, j.j.
</AUTHOR>
<BIBLIO>
nasa tn d-580, february 1961 .
</BIBLIO>
<TEXT>
an investigation was made to determine the interference effects on surface
pressure distributions caused by a sonic jet exiting normal to the
surface . two configurations, a flat plate and an arrow-wing reentrytype
vehicle, with sonic nozzles near the leading edge were tested over
a range of pressure ratios and reynolds numbers for mach numbers from
the data indicate that jet pressure ratio had considerable effect on the
 pressure levels and distributions on both configurations . also, for a
constant jet pressure ratio, the free-stream mach number effect on the
distributions and levels was quite large . over the limited range investigated,
the effect of reynolds number at constant mach number and
pressure ratio was small compared to the mach number and pressure ratio
effect .
</TEXT>
</DOC>
