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.
“Headquarters”29 pages
.u; a:s:e!T II EXlSTE'iCE OF A SOU:m CHAN:fEl iN TRF AT"'C~PHERE In ~eptember, 1944, 1 t occurred to me that there is a s1~1lar sound channel 1n the atmosphere with the axis at a height of about 45,000 teet, and that, with eource and receiver plsced at th1e height, we might exceed the accepted range.!! a a enormously UJ we had tn the ocean. ln other wot"da, it might be -poat~ib~.e to detect sound halt way aro•.1nd the world. ~: .. The fundamental data on this subject as revealed_dur1ng a hur~ied search of the literature (mostly nrior to 19~0), ahow that, for a t:voical large exoloe1on, there is at:dibility from 0 to 25 miles an1 froM 90 to 125 miles, with a zone of silence from 25 to ~0 ~1lee. The accepted explanation of the total collection of these dat:t is tbat tt1e 5T)eed of sound deore:ases fro"'- about l 090 tt/see at the ~urtace to about 970 ft/sec at about 45,000 feet, a:::d tt:cn inc:reases to abo:1t 1165 ft/sec at a~ut 130,000 feet. (Reference 2) Thu~ there 1~ a ~oun1 ~hannel in the atmosphere with its axis at a ~ei;bt of aco~t 45,000 feot, nnd if both sound source and 7-'aceiver are located at th!:: height, ".te !!WY a.x:;>ect extr:aoro1nary !'lilnges and all the othor nseful ~heno~ena which have been found in the sound channel ln the ocean. This means that the signals will have highly eharaeter1st1c 1dent1fy1ng features anj that they will permit aeou~te tr1an~ulat1on. III ?ROBABLE 7lAXIJ:UM F\A~lGE 'l'he maxlmul'll N.nge ror sonic signalling 1n the ataoapher1o aoum ehannel.w111 :1epend pr1Dt&r1ly on the absorption coeff1c1ent, which 1a .the rate at wblcb the acoustical energy 1a converted 1nto heat_by fr1ct1onal los~ea. •ollow1ag Rayleigh (Rete~ence 3, P• 316), it MAy be calculated that· the distance at Wb1ob·eound of.trequency 50 cycles ~er aecoDd would be reduced 1n 1ntena1ty by the !aotor 7.5 by the ettect or t'r1otion alone 1a about 24,000.m1lea at sea level, aDd about '500 allea at 45,000 feet~ Aa these d1atancea are ·1nverflely proportional to tbe square or the frequency, they would be one hundred t1mes greater tor sounds of fJ"equeney 5 oyele., oer •econd, wbioh ha•e often 'been o'bee~ved when large ex~loa1ona we~e •tud1ed. •••••
FOIA release, from the osd collection. The PDF is mirrored here; the original link is above. 993 pages are in the text index: search them above, or from the library's search.