ADTO # 83 - October 22, 1999
QuestChats require pre-registration. Unless otherwise noted, registration is at: http://quest.arc.nasa.gov/aero/chats/#chatting Join us for a special series of chats focusing on the HSCT! Tuesday, October 26, 1999, 10:30 AM Pacific Daylight Time: Charles Stangeland, intern machinist Charles Stangeland is an intern in the machine shop. He is currently working with his mentors to prepare for the High Speed Civil Transport (HSCT) wind tunnel test. They are making parts that the tunnel mechanics, facility, or model may need for a test. Read Charles Stangeland's profile and prior to joining this chat. http://quest.arc.nasa.gov/aero/team/stangeland.html Monday November 1, 1999 10 AM Pacific Daylight Time: Grant Palmer, Computational Fluid Dynamics Engineer Grant Palmer writes computer programs that predict how hot the surface of the space shuttle will get when it returns to Earth from space. And a heads up we'll be chatting with Orville and Wilbur Wright in November!
A Webcast of the test of the Right Flyer Gliders! Filmed at the United States Air Force Academy Aeronautics Laboratory Wind Tunnel This real media file will debut during the week of November 11,1999. We will have a chat room featuring Richard Yanni the teacher whose class put the gliders into the tunnels. Right now I am planning the event for Tuesday, November 12th at 1O AM Pacific Standard Time. All the east coast schools wrote in and voted for this time!
[Editor's Note: Charles Stangeland is a college intern in the machine shop. They are making parts that the tunnel mechanics, facility, or model may need for the test. Read his profile at http://quest.arc.nasa.gov/aero/team/stangeland.html ]
MEASURING FOR A GOOD FIT
By Charles Stangeland
October 19, 1999 I have been working on building a light source that shoots through the tunnel making it possible to see the shock waves on the other side of the tunnel. I am making up a little stand right now to hold the light source. It will be built out of mostly aluminum and some stainless steel. Some of the parts have already been pre-manufactured and I am changing them a little to make them work for this application. I am going over to the 11' wind tunnel right now to take measurements on the different parts in particular the screw locations. Then I will add that information to the redesign. This whole project will be done by hand. There will be a lot of lathe work and a lot of milling work. Last week was just one of the worst weeks. Nothing went right. I kept making everything the wrong size. Luckily I was able to modify it to make things work. I measured a thread and it looked good. Then I made the other piece to go into the first piece and it wouldn't fit. I had to figure out why it wouldn't fit. I turned out that I had left too much material. I had to go and cut the second piece down. Since we are designing this piece on the spot I am learning how to manufacture it on the spot. This was a part for the light source stand I mentioned before. I am making a swivel base and I miscalculated the measurement on the thread. This will be installed in the 9 by 7 wind tunnel part of the unitary system. It is a supersonic tunnel. So with the light source installed they will be able to measure the subsonic shock waves and then the super sonic shock waves when the speed exceeds the sound barrier. I have never actually seen this live but I have seen a picture of it.