Documents / Analysis
Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects
United States Air Force, Air Technical Intelligence Center · 1955-05-05 · 309 pages · text from the file's own layer
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“The Sun”19 pages
- p. 3 …Advanced Study of the Data 16
Position of the Sun Relative to the Observer 16
Statistical…
- p. 5 …Object Sightings by Angle of Elevation of the Sun, Intervals
of 10 Degrees of Angle . • , 57…
- p. 14 …In addition, the inclusion of
certain data relating to the evaluation and bearing of the sun…
- p. 20 …for the uncommon natural
phenomena associated with light reflections or refractions, such as mirages,
sun dogs…
- p. 24 …Position of the Sun Relative to the Observer
The first thing that was done was to…
- p. 63 …The difference between the longitudes of the sun
and the observer was taken, and.called the…
- p. 65 …90 +60 +30
Angle of Elevation of The Sun
-30 -60 - 9 0
FIGURE 4 0…
- p. 66 …is greater than the declination
of.,the sun at the summer solstice, so that it would…
- p. 68 Group 5 — Night sightings for which the sun was more than 10°
below the horizon and…
- p. 84 …the sun was either above the horizon or less than
10° in elevation below the horizon…
- p. 85 …It is
interesting to note that two of these were established as mock suns on the…
- p. 91 …It reappeared and was
seen flying back and forth across the sun. At one time an…
- p. 266 …SKETCH C
The sun and the noon are shown below as they appear in their correct…
- p. 279 …IF you saw the object during DAYLIGHT, TWILIGHT, or DAWN, where was the SUN located as…
- p. 280 …Did you observe the object through any of the following?
a. Eyeglasses Yes No
b. Sun…
- p. 299 …These cards (and the corresponding WORK SHEETS) contain data from
several sources. Columns referenced to the…
- p. 300 …the
Sun
5.
15.
U7*
U8
U9.
5o
5l^
53
5U
55^
56*
Group Classification
Sun…
- p. 301 …00°
CODE U8-51 SUN BEARING ANGLE
(Calculated)
CODE 5l SUN BEARING ANGLE
X
Y
0…
- p. 307 …the
Sun
-
5.
15.
U7*
U9.
50
51*
52*
53
5U
55*
56*
Group Classification
Sun…
KlCL-
•;.-..v »'• v
STUDY NO. IO2-EL-55/2-79
ANALYSIS OF REPORTS OF
UNIDENTIFIED AERIAL OBJECTS
PROJECT NO. 10073
5 MAY 1955
5 > c 2
o c/> c/1 • "
>n
CO 3 -
O < *
A)
0
o
2
0
Copy No.
CD
Co -•
(
\,"
About this file
Analysis, from the classic collection. 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.