Documents / FOIA release

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. 43 …to the sun for only a few days. The plasticizers and antioxidants in the neoprene would…
  • p. 205 …ashes after exposure to the sun for only a few days. The balloon material and radar…
  • p. 221 …to the sun. Q: Is this the neoprene type or the ••• A: That's the neoprene…
  • p. 230 …such as the balloon material degraded, and maybe fused in the hot sun? 14 A: I…
  • p. 282 …We worked in the old Sun newspaper building in downtown Baltimore. Q: They had intelligence personnel…
  • p. 465 …the values of superheat ob- tained by the gas when the balloon is in the sun…
  • p. 484 …Superheat and Its Effects The effect of the heatin~ of lifting gas by the sun's…
  • p. 489 …Since the effect of the sun in heating the lifting gas decreases the effect of different…
  • p. 524 …when the ex- ternal temperature was measured, since no adequate protection from the sun was available…
  • p. 525 …Daytime flights had the added advantage or heating from the sun. The temperature of the lifting…
  • p. 541 …in the aneroid val~e as intermittent clouds shut off' the sun, and (3) the overcompensation…
  • p. 547 …stmset, and the balloon took on superheat whioh was lost_when the sun went down. ntis…
  • p. 558 …the transmitter was not insulated, and there was no heat to be gained .from the sun…
  • p. 570 …Since the sun had set between the third and -40-
  • p. 579 during the sunset descent (caused when the superheated helium lost the sun's heating ei'i…
  • p. 591 …that seen earlier with the balloon gas being warmed by the sun to acquire a superheat…
  • p. 666 …the changing buoyancy of the balloon as cloud masses intermittently shielded it from the sun's…
  • p. 736 …the subst;q.uent descent, superheating of the balloons by the nsmg sun would cause the…
  • p. 739 …Flight termination was usually due to deteriora- tion of the balloon caused by the sun. In…
  • p. 740 …the ambient tem- perature after the sun had risen. The automatic ballast valve operates. when the…
  • p. 801 …April 14 Sun. Down to lab this am with Joe looking for G9A files. Jim Peoples…
  • p. 802 …Discussed with Crane possibilities of getting sound through the ground part of the ocean sound channel…
  • p. 803 …Over to Jim and Rowes tonight and to Euzzards Bay bowling, l'ay 5 Sun. L…
  • p. 806 …Stayed at Amarillo - at Clinton Hotel Jan 19 Sun Left Amarillo about 1130 CST IC.ent…
  • p. 808 …Correlated between the ~ower and Dona sites for se·reral sources. 'o!orked total travel times…
  • p. 810 …April 6 Sun. Checked clocks. Cleaned out hanger and emptied trash out at East White Sands…
  • p. 811 …April 20 Sun. Worked on plans for bombing runs and V2 monitoring. April 21 Mon. Alamogordo…
  • p. 812 …All equipment loaded on plane this pm. ~ay J-4 Sat, Sun. Left Alamogordo about 9…
  • p. 815 …29 June (Sun) NYU personnel and some of Watson Lab men working today with equipment in…
  • p. 816 …July 1a Sun. to cabins in Ohio just out of Springfield. July 1 Mon. To cabins…
  • p. 852 …4C.~~~ies• .tJi~J.tl~e ..• a 'telemeteririg ·device to indicate· the rate of ballast flow…
  • p. 861 …a sun- set. (3) By adding altitude control equipment, it is possible to maintain the balloon…
or sunset outs off the superheat is so large that it is not possible
to carry enough ballast to sustain ,the system unQ.er these condi-
tions. On the other hand, the loss of buoyancy through a sealed-off
Seyfang balloon at 4100 feet MSL is of the orQ.er of 60 grams per
hour Which is significantly less than the loss expected from a 20-
foot, 1 mil polyethylene cell in flight conditiona. (With the appendix
aperture sealed, .such a cell shows a loss of lift of about 40 grams
per hour when one-fifth inf~ated at sea level).
One other type of balloon which has been used as a super-pressure
balloon is the neoprene J2000 balloon of Dewey and Almy, surrounded
by nylon cloth shroud. The rubber balloon normally would expand
until it reached bursting diameter, but when enshrouded, it is
limited to the volume of the shroud. The difficulties in launching
and flying this balloon are not unusually great, but on each of the
several tests which have been made to date improper handling has
been a possible cause of the early rupture of the balloon. It is
believed, however, that such a balloon is not especially suitable
t~ long flights because of the deterioration which occurs in the
neoprene in the presence of sunlight. Perhaps a shroud of material
which would filter out the ultraviolet rays would protect ana
lengthen the lite of such a balloon.
Despite the success of the Japanese silk or rice-paper balloons,
which were constructed on a super-pressure principle, it is not be-
lieved practical at this time to develop a balloon of such strength
that it would successfully withstand and retain press\lre increases
corresponding to the temperature changes from night to day as the
superheat of absorbed sunlight is gained. The super-pressure with
a neoprene-coated nylon balloon, for example, would be approximaitiy
0.6 psi. That such a balloon could be built is unquestioned. The
cost of production, however, appears at this time to be unwarranted.
D. Altitude Controls
Beginning with the arrays of rubber balloons which were first used,
various systems of dropping ballast, both solid and liquid, have
been attempted with the aim of exactly compensating for the loss of
buoyancy which is occasioned as the lifting gas diffuses or leaks
through the balloon. On the early rubber balloons only rough incre-
mental ballast dropping was emPbyed. At that time it W$S decided not
to use sand as ballast since most sand contains some water which
may freeze while aloft. Further, it is easier to control the flow
of a liquid ballast than it is to control sand particles. In the
investigations for a suitable liquid ballast the petroleum product
known commercially as Mobil Aero compass fluid was finally settled
upon. These investigations included tests of cloud point, freezing
point, and also density and viscosity over a large range of tempera-
tures. The compass fluid is especially suitable for ballast work
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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.