Archived posting to the Leica Users Group, 2018/05/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]That?s a beautiful and fascinating set, Jim. I wish I had a better recollection of AEDC from my ROTC summer-camp visit there in ?67. I had a fling with APS too, still have my Canon EOS-IX APS SLR here on the shelf in my study, and lots of (inaccessible) rolls of developed film in the drawer. Any idea whether it?s possible still to get these scanned? The nameplate on the electric motor is fascinating ? 13200 V @ 2750 A! That means the resistance of the windings is less than 5 Ohms. Given that there must be hundreds of meters of wire in the windings, the conductors must have the gauge of a garden hose. With a PF of 100%, the 13200 x 2750 x sqrt(3) VA works out to some 62 MW or 83000 hp at the shaft. For comparison, the four MerMaid electric propulsion pods of the Queen Mary 2 together at full steam draw 80 MW or only about 30% more than what this motor draws! I?d guess that this motor alone could power the QM2 at the economical speed with which we crossed the Atlantic in 2013. The ship?s power plant produces less than twice the power that this motor consumes. That is one H of a motor! The ducting for the tunnel looks like any old industrial stuff?until you notice the gauge of the steel stock, and the sheer number of bolts on the flanges. That was built to take SOME pressure! ?howard > On May 4, 2018, at 15:19, Jim Nichols <jhnichols at lighttube.net> wrote: > > I appreciate all of the responses to my posting of APS images. One LUGGER > who responded off-list asked if I had any more of these APS images. In > reviewing my images from 1986, I found another set. > > Normally, cameras are not allowed on-base at Arnold Engineering > Development Center, where I spent 39 years. But, in 1986, the base held > an open house for employees and their families. Displays were set up > showing items of interest, and cameras were permitted. I took advantage > of this opportunity to capture a few images to which I had not had access > previously. I am almost positive that the Kodak APS camera was my choice > that day. > > The Propulsion Wind Tunnel Facility is composed of two 16-ft wind tunnels > and one 4-ft wind tunnel, along with the plant equipment to support them. > The main drive system for the large tunnels originally had 216,000 HP on > one shaft, and has since been upgraded. Here is a view of the compressor > for the transonic tunnel. > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+16T+Compressor+from+Across+the+Street.JPG.html > > That red & white stack is 200 ft tall. > > This is the nameplate on one of the two largest motors. > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+PWT+Large+Motor+Nameplate.JPG.html > > This is one of the numerous auxiliary compressors that support the tunnel > operations. > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+PES+F-Unit.JPG.html > > At the time of the open house, a lot of store testing was being done in > the transonic tunnels and three neat models were on display: > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+A-10+Test+Model+from+16T.JPG.html > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+FB-111+Test+Model+from+16T.JPG.html > > http://www.gallery.leica-users.org/v/OldNick/20070917-1986+Open+House_+F-16+Test+Model+from+16T.JPG.html > > The little Kodak APS camera did its job! > > -- > Jim Nichols > Tullahoma, TN USA > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information