Sunday, December 16, 2007
Thursday, December 13, 2007
Sunday, December 09, 2007
Thursday, December 06, 2007
Denise and Maria flew home from Atlanta on a Delta MD-88, flight 914 Monday night after a long first leg from LAX. This is what the air traffic controller sees as they head north for Buffalo in a very busy airspace. Thanks to the ATCmonitor web sight (www.atcmonitor.com) I was able to spot the flight shortly after take off as you can see by the orange arrow. Now if i can just figure out how to communicate with the pilot, second thought probably not a good idea.
Spencer and Annette discovered that people actually do go boating in the month of December! However, if you were thinking about taking a "dip"...you may find some strange looking creatures swimming next to you! (I am not sure you would find one of these in Lake O.)
Tuesday, December 04, 2007
While I was away, a gift bag mysteriously appeared on our front porch. Dan does not know who left this for us or when. It was obvious when I opened it that they new me well. The tag reads "Enjoy the holiday season". Thats it. Nothing else. So whoever you are please let me know so I can thank you- and by the way- it will look awesome on my tree!
Sunday, December 02, 2007
This super cool photo shows transonic airflow around the Blue Angels F-18 with superb clarity. Unlike many similar photos - popular as computer wallpaper - that reveal only condensation in the expansions following the shock waves, here we see the shocks themselves by way of background distortion. This works best when the background has strong light-dark boundaries, as in the case of the white boats against the dark water. The shock wave pattern is complicated over the wings and tail, but note the single shock which terminates a local supersonic-flow region generated by the canopy. Also the white water following the shock wave system is caused (I think) by the fact that moving shock waves drag an airflow behind them that is strong enough in this case to whip the water into froth. Finally, the shocks above and below the aircraft tail have a distinctly “glassy” appearance. To me this is the most fascinating thing about this photo. On those rare occasions when you can see them, shock waves in air look just like streaks in glass. Both are invisible unless revealed by background distortion. If you click on the photo all of this might be easier to see as it makes it bigger on your screen.
Posted by Anonymous at 20:13