Post your 9/11 remembrance trackbacks here:
Sphere: Related Content
|
|
||||
|
|
9/11 Remembrance Trackbacks5 comments to 9/11 Remembrance TrackbacksLeave a Reply |
Dream Chaser Buffet Wind Tunnel Model  The Dream Chaser model with its Atlas V launch vehicle is undergoing final preparations at the Aerospace Composite Model Development Section's workshop for buffet tests at the Transonic Dynamics Tunnel at NASA Langley. The scale model is being tested as part of NASA's Commercial Crew Development program to regain the American capability to launch astronauts safely to the International Space Station. The lifting body reusable spacecraft would carry as many as seven astronauts to the space station. Sierra Nevada Space Systems is developing the craft under a Space Act Agreement with NASA. With the help of hundreds of pressure transducers, engineers from Sierra Nevada Corporation, the United Launch Alliance and NASA Langley will look at the pressure fluctuations the model and launch vehicle stack experience during the critical ascent to orbit, especially at transonic speeds. Shock-waves form on launch vehicles as they approach the speed of sound and may result in regions of highly unsteady flow. Within these regions of the Dream Chaser and launch vehicle, the resulting buffet forces and high frequency acoustic noise must be clearly understood as part of the vehicle design process. Transonic wind-tunnel testing of large, highly instrumented scale models is the only method of determining the buffet environments of launch vehicles with complex shapes. Image Credit: NASA EDGE/Ron Beard Read More Planned books:None Current books:
Recent books:
|
||
|
Copyright Steeljaw Enterprise, LLC © 2012 Steeljaw Scribe - All Rights Reserved
Powered by WordPress & Atahualpa |
||||
My own memories of that day while haze grey and under way
Seemed like only yesterday…
I need all of you to push the TV images you might have seen or might be seeing out of your mind and do your jobs at general quarters. To emphasise again the United States has been attacked and we are going to GQ, we don’t know who or what else has be….
The next night was even more stressed filled and people at home knew what we were doing before they told us.
Remembering September 11, 2001…
September 11, 2001
Everyone who was old enough to understand remembers where they were on that day. I certainly remember where I was and what I was doing. I just wish more people would remember the spirit of unity that followed it. I have never befo…
I remember Heather Lee Smith.