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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 107 Original source ↗

“Jet Propulsion Laboratory”1 page

  • p. 94 …approach the speed of a jet before it disappeared. No propulsion was apparent. Time of observation…
INDEX OF TABLES
(Continued)
Page
Table A83. Evaluation of All Sightings by Duration of Sighting, 1948 154
Table A84. Evaluation of All Sightings by Duration of Sighting, 1949 154
Table A85. Evaluation of All Sightings by Duration of Sighting, 1950 155
Table A86. Evaluation of All Sightings by Duration of Sighting, 1951 ' 155
Table A87. Evaluation of All Sightings by Duration of Sighting, 1952 156
Table A88. Evaluation of Unit Sightings by Duration of Sighting, All Years 157;
Table A89. Evaluation of Unit Sightings by Duration of Sighting, 1947 157
Table A90. Evaluation of Unit Sightings by Duration of Sighting, 1948 158
Table A91. Evaluation of Unit Sightings by Duration of Sighting, 1949 158
Table A92. Evaluation of Unit Sightings by Duration of Sighting, 1950 159
Table A93. Evaluation of Unit Sightings by Duration of Sighting, 1951 . 159
Table A94. Evaluation of Unit Sightings by Duration of Sighting, 1952 160
Table A95. Evaluation of Object Sightings by Duration of Sighting, All Years 161
Table A96. Evaluation of Object Sightings by Duration of Sighting, 1947 161
Table A97. Evaluation of Object Sightings by Duration of Sighting, 1948 . 162
Table A98. Evaluation of Object Sightings by Duration of Sighting, 1949 . 162
Table A99. Evaluation of Object Sightings by Duration of Sighting, 1950 163
Table A100. Evaluation of Object Sightings by Duration of Sightings, 1951. 163
Table A101. Evaluation of Object Sightings by Duration of Sighting, 1952 : . . . . . 164
Table A102. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Five Seconds or Less 165
Table A103. Evaluation of All Sightings for All Years/by Duration of Sighting for Months
of Year, Six to Ten Seconds 166
Table A104. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Eleven to Thirty Seconds 167
Table A105. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Thirty One to Sixty Seconds 168
Table A106. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Sixty One Seconds to Five Minutes 169
Table A107. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Six to Thirty Minutes 170
Table A108. Evaluation of All Sightings for All Years by Duration of Sighting for Months ' ' •
of Year, Over Thirty Minutes 171
Table A109. Evaluation of All Sightings for All Years by Duration of Sighting for Months
of Year, Duration Not Stated . 172
100

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Report, cited by the archive. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.