Archived posting to the Leica Users Group, 2008/04/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank, Thanks for the link. The early model, in the first photo, is similar to what we had in the Mississippi State Aero Engineering Dept. in the late 1940s. The one in the second photo is similar to what I used for engineering work, which was very useful in doing stress calculations and curvature prediction when applying precisely curved shapes to steel plates that were almost an inch thick and were shaped by pairs of electricly powered ball-bearing screw jacks. The nozzle system has been in almost daily use for fifty years, so we must have done it right. Modern pressure instrumentation and computational techniques have allowed some small improvements in the critical portions of the nozzle contours, but the basic structure is unchanged. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Frank Filippone" <red735i@earthlink.net> To: "'Leica Users Group'" <lug@leica-users.org> Sent: Friday, April 25, 2008 1:57 PM Subject: RE: [Leica] noctilux factoid of the day > Oh, I forgot to add..... > > Marchant merged with a typewriter company.... Smith Corona Typewriter > Company to form..... > > SCM..... Smith Corona Marchant....... > > > Here is state of the art Technology for optical design around the > 60's......second picture down > > http://www.vintagecalculators.com/html/marchant.html > > > Frank Filippone > red735i@earthlink.net > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >