Quantcast Wall Temperature/Engine Nozzle Distance Correlation

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F-14A operation.  The reduction appears to be due to increased augmentation
with the flared augmenter inlet applied at Patuxent River.  The results of
F-14A misalignment tests run in Miramar Hush-House No. 2 and reported in
Reference [6] and those run at Patuxent River are summarized in Figure 20.
This shows the rapid increase in maximum augmenter wall temperature with
aircraft misalignment.  Figure 20 further shows the beneficial effect of the
flared augmenter inlet on wall temperatures in the Patuxent River hush-house.
Wall Temperature/Engine Nozzle Distance Correlation.  Figures 21 and
22 represent an attempt to relate maximum augmenter wall temperature with the
distance from the engine nozzle exit to the impingement point.  In Figure 21,
maximum wall temperature parameter,T+P+max,,, is plotted versus the distance
from the nozzle exit to the nondimensionalized location of maximum wall
temperature within the augmenter (this basically portrays the effect of jet
mixing).  Figure 22 presents the relationship between hot spot location and
the point at which the projected nozzle centerline intersects the augmenter
wall.  Figures 21 and 22 are particularly useful in cases where the nozzle
centerline is canted toward the augmenter wall or where the nozzle centerline
is offset significantly from the augmenter centerline.  Even so, Figures 21
and 22 do not account for effects on pumping, such as those derived from the
application of a flared augmenter inlet to the Patuxent River hush-house.


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