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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.

Open the PDF at page 300 Original source ↗

“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…
U. S. Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
I.
f? •
f V :
HIT
39
Uq
Ui
U3*
US
75*
76*
77*
Hour
Angle
Angle of
Elevation
of the
Sun
5.
15.
U7*
U8
U9.
5o
5l^
53
5U
55^
56*
Group Classification
Sun
Bearing
Angle
Time Units
Duration
of Observation
Groups Classification
Hpw Observed
16a.
16b.
16b. 17.
19.
lla. lib. 39.
17. 18. 2U.
llf. 21. 22. 2U.
10, lie.
5. 1 1 . 17. 20.
33.
29. 31. 1.
23. 30. 31. 2.
31. 32.
i>7*
5 8 *
59*
60*
61*
62*
63*
6U*
6 5 *
6 6 *
6 7 *
6 8 *
69*
7CH^
71*
Y2*
73*
Sound
Object Color
Light Color Physical
Color-Group
Classification
Number
Speed
Shape Description
Size
Light Brightness
Angular Velocity
Angular Acceleration UGI'1Gn
Appearance bearing
Disappearance Bearing
Initial Elevation ^ . J..
Final Elevation D^oiipti
Orientation
Maneuvers
Observer Occupation
Observer Rating Observer
Report Rating
Reliability Group
Classification
Final Identification
•* Denotes that separate code key is needed.
304

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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.