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Project Blue Book Special Report (second copy)
Internet Archive · 309 pages · text from the file's own layer
This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.
“The Times”39 pages
- p. 5 LIST OF ILLUSTRATIONS '
(Continued)
Page
Figure 38 Comparison of Evaluation of Object Sightings in the Strategic…
- p. 10 …an awareness of the proportions this subject has assumed at times in the
public mind,, this…
- p. 11 …Further-
more, most of the reports were not reduced to written form immediately.
The time between…
- p. 12 forgetting the subjectivity of the data at the time that conclusions are
drawn from the analysis…
- p. 14 …However, at the time that the maneuver factor was determined to be criti-
cal, it was…
- p. 15 …Factors of the observer's location, date and time of observation, descrip-
tion of the phenomenon…
- p. 17 …adopted in the determination of OBJECT
SIGHTINGS, using the factors of date and time of observations…
- p. 21 …In cases where a group
decision was not made within a reasonable time, the report was…
- p. 22 …It was believed at the time, and later
substantiated, that the results of the program for…
- p. 23 …The statistically usable variables presented in this study include the date,
time, location, duration, reliability, and…
- p. 24 …the horizon and its bearing from true north as seen by the
observer at the time…
- p. 63 …Using the date and time of the observation, the longitude and declina-
tion (S) of the…
- p. 66 …i
The Local Sun Time was computed as a step in the calculation of the
angle…
- p. 86 …Thus, out of the 434 OBJECT SIGHTINGS that were identified as,,
UNKNOWNS by the data reduction…
- p. 87 …Since a commercial plane was taking off at this
time, the pilots were asked to investigate…
- p. 88 …One hovered^while the other moved to the east and came back, at which
time both…
- p. 89 …It passed to the right and
slightly above them, at which time it went into a…
- p. 90 …Total
time of the observation was 15 minutes. Apparently, the observer just
stopped watching the object…
- p. 91 …At one time an F-86 passed
between the observer and the object. He pointed it…
- p. 92 …He ran to his kitchen where he pointed out the object to his wife. Total
time…
- p. 94 …The time was about 1700
hours on May 24, 1949. The object was reflecting sunlight when…
- p. 95 …Con-
sidering the visibility, the length of time the object was in sight, and the
distance…
- p. 97 …the observer in the rear section of the object or under the object (viewed
at time…
- p. 100 …In the description
of the object, it was stated that at certain times there
was no…
- p. 264 …Date you reported the observation:
Day Month Year
3. What time was it when you sighted…
- p. 265 …Suddenly or Gradually
Circle One
At any time did the object:
a. Change direction, b. Change…
- p. 266 …the traced path to shotf the
successive positions of the object
after equal intervals of time…
- p. 267 …All observations from the time of first sighting to the time
of dissappearance are important. Include…
- p. 270 …When did you see the object:
1.1 Date: Day
1.2 Time of Day:
Month…
- p. 271 …7« Were you moving at any time while you saw the object? (Circle One)
Yes or…
- p. 272 …What do you remember about the weather conditions at the time you saw the
object?
11…
- p. 273 …Did the object a t any time;
13.1 Hove behind something? (Circle One) Yes No…
- p. 276 SECTION E
26. "Was this the first time thajb you have seen an object like this…
- p. 279 …When did you see the object?
Day Month Year
2. Time of day: Hour Minutes
(Circle…
- p. 280 …Did the object:
a. Appear to stand still at any time?
b. Suddenly speed up and…
- p. 283 …What were you doing at the time you saw the object, and how did you happen…
- p. 285 …What were the weather conditions at the time you saw the object?
34.1 CLOUDS (Circle…
- p. 299 …These cards (and the corresponding WORK SHEETS) contain data from
several sources. Columns referenced to the…
- p. 300 …HIT
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Angle of
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STUDY NO. IO2-EL-55/2-79
ANALYSIS OF REPORTS OF
UNIDENTIFIED AERIAL OBJECTS
PROJECT NO. 10073
5 MAY 1955
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About this file
Report, cited by the archive. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.