<DOC>
<DOCNO>
1223
</DOCNO>
<TITLE>
inviscid-incompressible-flow theory of static two-dimensional
solid jets, in proximity to the ground .
</TITLE>
<AUTHOR>
strand,t.
</AUTHOR>
<BIBLIO>
j. ae. scs. 1962, 170.
</BIBLIO>
<TEXT>
  the inviscid-incompressible-flow theory of static two-dimensional
solid jets impinging orthogonally on the ground is presented
using conformal mapping methods .
  it is shown that the thrust of a solid jet at constant power
initially decreases as the ground is approached .  the magnitude
of the thrust out of ground effect is regained only at a very
low height-to-jet width ratio (approximately 0.55) .  the maximuin
decrease is about 6 percent .  the ground effect on solid
jets is thus largely unfavorable .
</TEXT>
</DOC>
