Documents / FOIA release
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.
“water”16 pages
~G = G X ~X (1 • K) K T where t::.. G = loss of lift G =gross load (balloon weight plus equipment load) AT : mean temperature difference in lifting gas before and after sunset T =free air temperature K = specific gravity of lifting gas, relative to air The specific gravity of 98,% helium, diluted with air, and with respect to air, is 0.157. It maybe noted that with a lower specific gravity of a gas, lower ballast corrections are required. Hydrogen, for example, requires half the ballast Which helium requires for the same temperature differential. At high altitudes, a difference of 40°C may be expected in the temperature of the lifting helium from day to night. This would correspond to a loss of lift ut sunset, on a General Mills 20- foot balloon, or about 550 grams. F. Internal Pressure The maximum internal pressure which can be held within a spherical container is given by Timoshenko8 : P • 28 u x t I" where Su is the ultimate strength of the material in tension, t is thickness or the material and r is the radius or the spherical shape. Applying this equation to a polyethylene film, such as used in the General :Mills 20-foot balloons, Su at room temperature : 1900 psi., t =0.001", and r : 10 ft., giving the maximum pressure, P =0.032 psi. This pressure is· equivalent to about 1.1 inches of water, or 2.5 mb. This small bursting pres- sure necessitates proper inflation and load values to prevent the balloon's - 20 -
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.