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The Roswell Report: Fact versus Fiction in the New Mexico Desert was published by Headquarters United States Air Force in 1995. The Black Vault distributes this copy. It reproduces the report by Col. Richard L. Weaver and the synopsis by 1st Lt. James McAndrew, both written after a General Accounting Office inquiry requested by Representative Steven Schiff. The Air Force search found no evidence of an extraterrestrial craft or crew. It concluded that the Roswell debris most likely came from NYU Flight No. 4, a Project MOGUL balloon train.
“US Navy”10 pages
Figure 31. Tests of Olland-Cycle performance.
Hysteresis at any one temperature was the worst serious cause of the width of the envelope of curves. However, this error was minimized by the smoothness of the rotating cylinder and the continuous motion of the cylinder under the contact pen. Probably the necessary looseness of the bearings and the joining to the motor gear train had a great deal to do with the spread between different calibrations.
The maximum variation of any one calibration curve from the mean was about $ \pm 3 $ millibars.
The following recommendations are made for the use of the Olland-Cycle modulator:
(a) The modulator should be mounted inside the battery box and insulated so as to keep its temperature above $ - 3 0^{\circ} \mathrm{C}. $
(b) During the rapid-rising portion of the flight the accuracy of the data warrants reading only to the nearest one percent of a cycle, or about one millibar of pressure.
Tests on the sensitivity of Olland-Cycle modulators indicate that although the accuracy is limited as indicated above, small variations may be detected with the result that it is valid to read the pressure record to the nearest tenth of one percent of one revolution. Report, cited by the archive. 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. 882 pages are in the text index: search them above, or from the library's search.