John Company

Department of the Air Force Report, 1996

DOW-UAP-D048 · page 51 of 181

Page 51 of 181 of DOW-UAP-D048

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In Figure 9, the percentages of impacts in 5° sectors from 0° to 180° have been plotted
for Atlas IIAS random-attitude turns out to 280 seconds. (It should be remembered that
random-attitude turns are representative of combined random-attitude and slow turns.)
For B = 1000, theoretical Mode-5 impact percentages are also plotted in the figure for
best-fit values of A obtained by trial and error.
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100
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140
160
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Angle From Flight Path (deg)
Figure 9. Atlas IIAS Simulation Results with B = 1,000
By observing curve shapes, it <;:an perhaps be seen that no single value of A causes a
theoretical impact distribution and a distribution of impacts from random-attitude
turns to match closely over the entire range of 5° sectors. Attempts to improve the
match on one end of the curve by selecting a different A merely degrades the match on
9/10/96
42
RTI