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roswell

Office of the Secretary of Defense · 993 pages · text from the file's own layer

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.

  • p. 17 …Popularly known as the Roswell Incident, this event has become the most celebrated UFO encounter of…
  • p. 73 …theory; movies such as "E.T.", "Close Encounter of the Third Kind", "Hanger 18" and "Cocoon…
  • p. 274 …I never encountered any such thing. We simply treated the security classification straight and did all…
  • p. 480 …differ- ential expansion of parts which is encountered at low temperatures is apt to cause less…
  • p. 513 …The defects which were encountered in the use of this trans- mitter were principally (1) relatively…
  • p. 517 …Altitude Determination To provide accurate, sensitive and readable records of the pressure (altitude) encountered by the…
  • p. 525 …This is due to the extreme cooling encountered in the expansion or the compressed gas as…
  • p. 526 …By adding a temperature-activated pen, this unit makes a record of the temperature encountered. Since…
  • p. 550 …miles and no cone or silence was encountered. By flying along the bearing indicated by the…
  • p. 556 …Ught winds were encountered in both oases, and a re~ersal trom Westerlies to Easterlies was…
  • p. 563 …Also the flight was made at night and no sunshine was encountered. i ~Ul!/JILLJLLI/l…
  • p. 569 …This force was in turn derived from the loss of lift encountered when over 300C of…
  • p. 667 Flight 12 was designed to overcame the difficulties encountered in flights 8 and 11, and, by…
  • p. 672 …Depending upon the noise-level encountered, it may be possible to acquire pressure data with a…
  • p. 713 …It, therefore, appeared that there was a certain amount of hazard to aircraft encountered in the…
  • p. 823 …S•clOc Probl• !he greateat problea encountered during the field testa at A.l.uogorcbt vas…
  • p. 841 …the range circuits necessary for conditions as encountered at this location. The fore part of July…
  • p. 920 …The clock should not be wound tightly since at the low temperatures encountered in the upper…
The following statistics for a given pressure (1001.8 ~il!ibars)
were computed:
on the mean
within 0.1% or mean
" o.2% " II
" 0.3% " "
" 0.4% " "
" 0.5% " "
N .Y .'J. Shop Model
L-416
12.5%
25 %
41.5%
62.5%
75 %
95.6%
Bra:Dsford Model
B-501
34 %
50 %
70.5%
85.5%
91 %
100 %
Other conclusions arrived at as a result of this test were:
(a) Since changes of speed of the motors did not occur simul-
taneously in the two instruments, the speed changes probably
are not due to slight changes in pressure or temperature.
(b) Sensitivity varied from 0.1 to 0.9 millibars.
(c) Sensitivity increased with increase of rate of pressure change.
It was recommended as a result of these tests that the records
of flights when the balloon is floating be read to the nearest
two-tenths of a percent of a oycle,or approximately two-tenths
of a millibar, for high accuracy. ~ben using the instruments
manufactured by Brailsford and Co., satisfactory accuracy will
be attained, if necessary, when the record is read to the
nearest one-tenth of a percent of a cycle.
In the second group of tests the pressure was reduced slowly
to about 20 millibars and increased to sea-level pressure at
different temperatures.
The most comprehensive series of calibrations wes made with the
first instrument made by Brailsford and Co. Two runs were made
at room temperature ( 22_10 C), one at -lOOC, one at -30 to 37°C
and one at -56 to -620C. On the last test at the lowest tempera-
ture, the unit was found to be completely unreliable. The
cause of failure was the erratic· motor operation at extremely
low temperatures. This had been observed previously during
flights when the Olland-cycle was not thermally insulated.
The other curves were plotted on a single chart in order to
study their spread (see Figure 31). The envelope of curves
thus obtained showed no regular temperature effect over the
range +2,°C to -370C. In general, the envelope was less than
10 millibars wide although at some higher pressures it was as
much as 12 millibars wide. The curves at low pressures fell
closest together and were all within 3 to 4 millibars apart
between 50 and 150 millibars and 6 millibars apart between
150 to 200 millibars.
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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.