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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.
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The temperature data obtained was of considerable value, especially to determine the effect of insulation of the battery pack. It was found on most flights where reasonable thermal insulation was applied that the temperature of the pack remained above $ 0^{\circ} \mathrm{C} $ after several hours of exposure at nighttime. The extreme observed was $ -10^{\circ} \mathrm{C}. $ Daytime flights had the added advantage of heating from the sun.
The temperature of the lifting gas at the ground was ordinarily found to be somewhat below the temperature of the air. This is due to the extreme cooling encountered in the expansion of the compressed gas as it was fed from the tanks into the balloon. During the rising period, in daytime, the gas gained heat, since it cools adiabatically less rapidly than does air (also less than the normal tropospheric lapse rate); at the floating level a differential of about $ 1 0^{\circ} \mathrm{C} $ was common. A typical temperature trace is shown in Figure 35.
Figure 35. Typical temperature record.
To permit the transmission of both temperature and pressure data by one radio channel, a pair of programming switches have been designed and flight tested. The first is the temperature switch (Figure 36),
Figure 36. Temperature programming switch. Report, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 882 pages are in the text index: search them above, or from the library's search.