U.S. Air Force Flying Discs File, 1952

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10.
Determine patterns of flight from position plots for each
frame, then:
a.
b .
o.
•
d.
e.
t .
g.
Is there any recurring pattern in the relative position
of the objects?
Do they maintain same r elative positions .in formation during
any caneuvers, partieul.arly violeat. maneuvers?
Is rel.a.tive position maintained: coincidental w:l.th monment
about their axis?
It undulating motion 1s present among a num.ber of objects
which are mnintain.1.ng a semblance of formation, db those
objects Wldulate 1n phase? Ditto for tumhllng motion?
Ia there any indication or abrupt changes in direction
of flight path throueh fairly large angles ( e. g. 90 degrees
or more during inteiv.11 o! 2 or 3 f'rames)?
Do any objects appear to reaai.n motionless at the same time
that others move about,?
Can al1 objects be accounted for at o.l1. times or do sane
llterall,y disappear 1\lhile still well wtthin fiel.d of view?