Documents / Report
This August 1949 technical report from the US Air Force Air Materiel Command presents Project Grudge's investigation of unidentified flying objects through January 1949. Drawing on consultants including Dr. J. A. Hynek, Rand Corporation, the Air Weather Service and Dr. P. M. Fitts, it explains most of 244 incidents as balloons, aircraft, astronomical phenomena, hoaxes or psychological errors. It concludes the objects pose no direct threat to national security and recommends reducing the investigation in scope.
Liaidant r81, -a-c -- pa.y J interval of more than half an hour, would be irreducible. Incident 133 is the only one of the four years includes the daytime conservation of practically this rare object. The portance of the incident is, never, paradoxical, for it was in tracking down the mysterious object that Lieutenant Dartoll lost his life. Again it is possible that the object observed was the planet Venus, although the evidence is by no means as definitive as that for the sightings made later that day. First, the hearings of the object as reported by various witnesses differ considerably; where one says southwest, another says south, for the two instances, however, interruttive; all the evidence, can be a joint attempt with the coincidence of the object's position with that of Venus. The following short table of sightings vs the position of Venus shows the general agreement of the two in all: Date Object Value 1350(1900 Oliver) Se of field almost due to 1.4° 1340(Sgt. Macivell)(1900 Oliver) east of field 1.9° after 1400(Lt. Urner) Se from due to 130°) at1400, moving westward 1446(1900 Austell)(Col. Zix) 210°215° 190° A more pertinent question is that of whether it would have been possible to see Venus in the daytime on that day. All that can be said here is that it was not impossible to see the planet under those conditions. It is well known that when Venus is at its greatest brilliancy, it is possible to see it during the daytime when our knowledge exactly where to look, yet on January 7, 1641, Venus was less than half
Report, from the classic collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 413 pages are in the text index: search them above, or from the library's search.