Documents / Report
This is the final report of the Scientific Study of Unidentified Flying Objects, conducted by the University of Colorado under Air Force contract F44620-67-C-0035, with Edward U. Condon as scientific director and Daniel S. Gillmor as editor. It was submitted to the National Academy of Sciences on 15 November 1968 for review. The report includes field studies, photographic and radar analyses, case studies, historical chapters and appendices such as the Robertson Panel report and the Twining letter.
Table 1 .._---:-.:-=============:===========._-- ._---_I_t_e_m_i_n;....;.r..;;i..;;e••l,.;,d ._~F..;;i:..e::..:l:..:d=_=lJ:..:i:..:r:..:e:..:c::... t:.,:l:..:"o:.,:n..::.-_ Ef fee t s--------.....:..;,;..:. ._---- Spark Plug Spark Plug Coil (Steel Container) Coil (Aluminwll Containe:-) Lead acid battery .dth resistive load ( IA curre~t) Light Coaxial with arc Perpendicular to arc Perpendicular to center line Perpendicular to center line Parallel to battery plates Parallel ~nd perpendic- ular to filament Slightly brighter spark Muved arc to side of electrodes, 20 kilogau~s did not stop arcing. Occasionally interrupted spa~k at 20 kilogauss. Spark started missing at about 4 kilogauss, stopped at 17 kilogaus~. Voltage dropped from 12.3 at zero field to 12.0 volt at 2U kilo- gauss. No effect 011 brightnes!' or current (r., sistance) up to 20 kilogauss. The spark plug was at atmospheric pressure with Ii lIormal gap of about 0.025 inches. Two coils were uSt::d, a J2V <llwninum-cased coil, \~ithout a voltag~ Jropping resistor, typical of European cars, and D 0V steel-cased coil of American lIlanufa~ture. The iron core of the aluminum-cased coil saturated at 16 kg. When the core is saturated, the charging current does not change the magnetism enough to generate a high voltage. The steel casing of the bV coU apparently proviJeJ enc ugh magnetic shielJing to extend the satura- tion point to something greater than 20kg. external field. Table 1 ~I~t~e~m~i~n~r~i~e.;l~d~______.__~F~i~e~l~d~D~i~r~c~c~t~i~o~n~__________________E~·f~f.ect.~s~_____ Spark Plug Spark Plug Coaxial with arc Perpendicular to arc Coil (Steel Perp~ndicular to center Container) line Coil (Aluminum Perpendicular to center Contain~~) line Lead acid battery Parallel to battery ~ith resistive plates load ( lA current) Light Parallel and perpendic- ular to filament Slightly brighter spark Muved arc to side of electrodes, 20 kilogau~s did not stop arcing. Occasionally interrupted spa~k at 20 kilogauss. Spark started missing at about 4 kilogauss, stopped at 17 kilogaus~. Voltage dropped from 12.3 at zero field to 12.0 volt at 2U kilo- gauss. No effect on brightnes~ or current (r,sistance) up to 20 kilogauss. The spark plug was at atmospheric pressure with a normal gap of about 0.025 inches. Two coils were us~d, a ) 2V ~ ltuninul11-cased coil, \d.thout a vol tag~: Jropping resistor, lyp:l.;al of European cars, and u 0V stccl-caseJ coil of American manufa.;ture. The iron core of the aluminum-cased coil saturated at 16 kg. Whell the core is sat uratecl, tilt:! charging current does not change the magnetism enough to generatt' a high voltage. The steel casing of the bV coil apparently proviJed encugh magnetic shielding to extend the satura- tion point to something greatc]' than 20kg. external field. f'
Report, from the classic collection. The PDF is mirrored here; the original link is under it. 1497 pages are in the text index: search them above, or from the library's search.