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.
“At sea”24 pages
(2) Solution, Migration and Evaporation through Film A very sli~t amount of lift is lost through solution of the gas into the balloon film. migration through the film and evapora- tion into the atmosphere. The rate of this type of diffusion is a function of the characteristics of the lifting gas and the partial pressure involved. Since the lifting gas is assumed to be very nearly pure. the partial pressure is merely the pressure of the atmosphere in which the balloon is floating. This method of diffusion need not be considered when ex- amining the loss of a balloon's lifting gas since it is of a low enough value to be insignificant as compared with the loss of gas by leakage through openings in the film. Tests have indicated that this type of diffusion through .001" polyethylene has a value of approximately 4 liters/meter2/day. At sea level this is equivalent to 5.32 ~r. for a 20-foot diameter balloon. At 40.000 feet MSL the value would be approximately 1 ~r. (3) Diffusion through Appendix We have seen that there is no pressure difference across the open appendix of the balloon during floating. Therefore. the loss of lifting gas through this appendix (except when the balloon is rising and gas is being valved out of the appendix) oan be only by true intermolecular diffusion of the gas into the atmosphere and air into the liftin~ gas. The expression for loss of lifting gas by diffusion is similar in form to the expression for transfer of heat through a given distance by conduction: (13) where: ~= -odNdydx dt dz · dN dt = time rate of transfer of molecules of gas across the area dy dx in direction a 0 : a coefficient of diffusion. dependent upon viscosity and dersity of the gas involved (0. ci) dN • variation of molecular concentration v:ith dz • variation in direction! dydx = the differential term for area_ Then. since a molecule of lifting gas has a given weight, we may state that: -46-
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.