Documents / FOIA release
The Roswell Report: Fact versus Fiction in the New Mexico Desert was published in 1995 by Headquarters United States Air Force. It was written in response to Representative Steven H. Schiff's request and a General Accounting Office audit, and it contains Col. Richard L. Weaver's report and 1st Lt. James McAndrew's synopsis, along with attachments, appendices and photographs. The report says researchers found no evidence of an extraterrestrial craft or crew. It concludes that the 1947 debris came from a Project MOGUL balloon train.
A. Positioning Equipment (l) SCR-658 The radio direction tinding set SCR-658 has been found to be the most useful unit to track a balloon- borne transmitter, within its .limited range. I£ the set is in good condition and the transmitter signal is good, it is possible to receive from a transmitter whiQh is 150 miles away at an altitude of 50,000 feet. At this distance, the elevation angle is usually not high enough to be reliable, since below angles of 13~ ground reflection of sig- nals makes them nearly meaningless. The azimuth angle and the elevation angle, when above 15~ are accurate to about 0.5°. It is thus necessary to use two such sets on about a 100-mile base line to give a position fix. If the elevation of the balloon is determined independently, and the eleva- tion angle is above 13°, it is possible to locate the balloon-borne transmitter with one SCR-658. The installation and maintenance of SCR-658 requires the services of a specially trained man, while the operation procedure may be made by relatively un- skilled personnel, with lim:i ted training. For details of the use of the SCR-658, see War Department publication TMll-1158!. ( 2) Theodolite The meteorological theod9lite is useful on daytime flights when skies are clear for ranges up to 100 miles. If radio datalre available to give height, the additional information obtained from this in- &trument--elevation and azimuth angle-JWill completely fix the balloon's position in three dimensions. When pressure data are known, two theodolites with a base line several mil-es in length will also uniquely locate the balloon. A third metho~. less accurate but still useful, is the method of stadia measurements. By carefully measuring, prior to release, the distance between two distinctive portions of the train and then noting the angular distance subtended during flight by these instruments, the alti- tude and hence all coordinates of the balloon may be determined. Regular and frequent checks must be made of the scale adjustments of the instruments and of the base plate -52-
FOIA release, from the osd collection. The PDF is mirrored here; the original link is under it. 993 pages are in the text index: search them above, or from the library's search.