CFD Review  
Serving the CFD Community with News, Articles, and Discussion
 
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service
twitter

Submit a CFD Story

Site Sponsors
CD-adapco
Pointwise: Reliable CFD meshing
ANSYS

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

 
Shuttle Disaster Investigators Turn to CFD for Answers
Posted Wed March 26, 2003 @05:19PM
Print version Email story Tweet story
News Newsday is reporting that investigators are presuming that the shuttle sustained damage to its left wing earlier than previously thought and that the damage was masked by changes in aerodynamics which locally increased lift, thereby compensating for any damage.

Stephen Labbe, chief of the Applied Aeroscience and Computational Fluid Dynamics branch at Johnson Space Center, said last week that the shuttle experienced an unusual change in forces on its left wing between the shedding of two pieces of observed debris. Despite the presumed damage, he said, the orbiter "executed a perfectly nominal roll reversal," or banking of the wings, about two minutes after the two pieces of debris were shed. Significant damage, he said, can create "locally a very high pressure that is on the lower surface of the wing and starting to push up on the wing."

Labbe and other NASA officials told the board that wind tunnel tests and computational studies simulating various types of damage to the left wing have yet to provide a coherent explanation for all of the forces Columbia experienced before it broke apart. The teams plan to do additional studies that mimic more severe damage than originally postulated, including the loss of multiple leading edge panels rather than just one.

Investigators face a complex task with computational tools they have had to develop as they go. There are no good models, officials said, for what happens when hot gases penetrate a shuttle wing and pass through existing vents or directly attack aluminum spars and ribs.


Sponsor CFD Review

[ Post Comment ]

New Series of Web-based CFD Demonstrations | Navy Successfully Simulates Effect that May Improve Low-Speed Maneuverability  >

 

 
CFD Review Login
User name:

Password:

Create an Account

Related Links
  • NASA
  • reporting
  • More on News
  • Also by nwyman
  • 'Shuttle Disaster Investigators Turn to CFD for Answers' | Login/Create an Account | Search Discussion

    The following comments are owned by whoever posted them.
    We are not responsible for them in any way.

    VMS version 2.0 ==> All content except comments
    ©2014, Viable Computing.

    [ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]