Film Analysis of Unidentified Objects, 1953

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Code 01/HW/lbh
Jl2
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Serial: ,
n,0.),
COOF~IAL
SECURITY INFORMATION
Subj:
Interpretation of Movies of Unidentified Objects;
progress report on
were 2457 and 378 mph respectively.
These figures differ f'rom those
given in reference (c) and were computed f'rom measurements obtained
under more controlled conditions. Acceleration "1,S determined from the
formula :
a :c Vf - VO
••b
T
.. ere:
a= Acceleration
Vf = final velocity
VO= initial velocity
T =time= 1/16 second
..
Since "g" is equal to 32.17 ft/sec2 it was computed that:
Maximum acceleration = 21,168 mph/sec: 965 g
Minimum acceleration :
1,104 mph/sec= 50 g
Maximum deceleration= 32,448 mph/aec • 14 79 g
Minimum deceleration :
2?2 mph/sec=
12 g
Velocit • and acceleration determinations were al so made from
the Montana film.
I n this case, terrestiaJ. object s appeared in the
film and were held to as control, Subsequently, the velocity and
acceleration determinations are considered to be more reliable.
On the
assumption of (b) a nd (c) above the maximum and minimum velocities of
the left object are 13 (4 and 361 mph respectfullj'.
For the right object
t hey are 1117 and 169 mph.
Accelerations were computed a.a:
Left Object
Right Object
Maximum acceleration mph/sec 14,016.639 g
12646. 5 {6g
Minimum acceleratio~ mph/sec
0 ..
0 g
O •
Og
Maximum deceleration mph/sec 13,184: 6o1 g
14238 .. 651g
Minimum deceleration mph/sec
0 •
0 g
O -=
Og
The above determinations were ma.de from a total of 322 measure­
ments. It was noted that the acceleration and determinations were in
multiples of 12.5 approximately.
This may be of significance although
no stud:;r has been conducted to determine this.
9.
Velocity and acceleration were treated in sub-paragraph 8
above.
Paragraph 2a indicates the controls used during this investi­
gation.
1 ,,. .
-GOm'IDmf.H:A:L
SECURITY INFORMATION
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