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. 443 …J., and Nantucket, Mass., at which points radiosonde and upper-wind observations are taken regularly. Hcmever…
  • p. 492 …6) Q oc J(:~'Jolr dv The mass rate of flow is equal to the density…
  • p. 494 …gas is constant, we may then express mass leakage as: (ll) L oc vi And then…
  • p. 495 …free path of the mole- cules involved. Mass flow of the gas is then: where: L…
  • p. 507 …d = diameter of sphere (ft.) p = JL = mass density of surrounding fluid (lb. sec.2) ft…
  • p. 516 mass-production methods and quality eontrol associated with stan- dard dry batteries gave greater assurance of…
  • p. 666 …changing buoyancy of the balloon as cloud masses intermittently shielded it from the sun's rays…
  • p. 763 …Cambridge, Mass. Att: Mr. Langley W. Isom Abstract Answer Forwarding P.0.#5983 Not furnished. & Requesting…
  • p. 764 …Cambridge, Mass. Att: Mr. Isom 12/17/46 Dow Chem. Co. MiC.land, Mich. Advising this…
  • p. 771 …4/11/47 WIRE Dewey & Al.my Cambridge, Mass. Mr. W. i.. Dawbe.rn 4/14…
By knowing the altitude of release and counting the number of
switches from conductor to insulator, the position along the
the commutator is kno'Wtl. This in turn is calibrated to give
pressure values, from which the altitude may be computed.
This system was not suitable for floating balloons because
(1) only 70 to 90 discrete contacts are provided to cover the
entire atmospheric pressure range; this means that the best
readability obtainable with this system is about ~10 millibars.
(2) When the balloon oscillates about a floating level, the fre-
quent changes from one contact to another give ambiguous readings,
since the number of discrete resistances used is limited.
For circuit details of this unit, see T.E. Sig. 165 and the
Weather Equipment Technician's Manual.
(2) Specially Coded Radiosonde Modulators
To remove the ambiguity of altitudes reported by the system
above, extra resistances were introduced into the circuits
of those contacts near the floating level; thus, each contact
gives a distinctive frequency and each pressure (altitude)
can be clearly distinguished.
In this system, there still remains the lack of resolution or
sensitivity inherent in the modulator with 70 to 90 contacts.
(3) Olland-Cycle Modulator
To improve the sensitivity of the pressure measurements, an
Olland-Cycle (chronometric) pressure modulator ~s developed.
Seen in Figure 30, the modulator contains a standard Signal
Figure 30. Olland-Cycle pressure modulator.
-68-

Cases discussed

About this file

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.