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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.
“Punch”14 pages
- p. 7 …Air Force on unidentified aerial
objects were reduced to IBM punched-card abstracts of the data…
- p. 10 …form suit-
able for transfer to IBM punched cards was extremely difficult ""and time
consuming.
For…
- p. 14 …Thus, the selection of the IBM punched-
card system for analysis of data forced the adoption…
- p. 18 …Multiple punching elirninated the need to use several columns
for discrete expression of the variations., Selection…
- p. 22 …counting, and tabulating the information from the punched-card
abstracts of reports of sightings. It was…
- p. 23 f
m
translation and transcription from reports to punched cards, indicated that
there would be relatively…
- p. 63 …cosines, and tangents of
angles had been punched for each 0.01 of a degree from…
- p. 68 …These group numbers were punched on the cards and incorporated
into the coding system. The number…
- p. 296 Observer's
Data
Sheet
Question
WORK SHEET
Punched
Card
Column Code Description
2
3
h Serial…
- p. 297 Observer's
Data
Sheet
Question
Punched
Card
Column Code Description
6.
7. a.
1 0 .
Ui…
- p. 299 …If no data
are available for any column, the Y (or 12 punch) should be used…
- p. 300 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
I.
f? •
f V :
HIT…
- p. 306 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
1.
1
2
k
12…
- p. 307 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
3o
hi
U6
75*
76…
Ol
98 object sightings
""^-Albuquerque
©
Unknown
2 5 . 6 %
Aircraft
20.8%
Balloon
20.0% Unknown
21.4 7. Astro
42.9%Balance of South
West Region
125 object sightings
I loon
2%/Alrcraft
16.4 7.
FIGURE 37 COMPARISON OF EVALUATION OF OBJECT SIGHTINGS IN THE STRATEGIC AREAS OF
THE SOUTH WEST REGION * ' ' s
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.