Custom Search
More than 12,000 searchable pages indexed.

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeView the YouTube RF Cafe Intro VideoKirt Blattenberger ... single-handedly redefining what an engineering website should be.

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe™


Better Re-Check Those Numbers
Kirt's Cogitations™ #14

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

Please click here to return to the Table of Contents.

   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.

< Previous                      Next >

Better Re-Check Those Numbers

Here is a lesson in how placing total faith in computer simulations can be utter folly - and deadly! As part of NASA's investigation into the shuttle Columbia's breakup over TX last winter, Boeing, builder of the wing leading edge (LE) sections, presented simulations proving that the dislodged chunk of main fuel tank insulating foam that struck the LE could not possibly have compromised the structure and therefore precipitate the disaster. Later, NASA engineers fired a similarly-sized real chunk of foam at a real wing LE, and were shocked to witness the resulting 16" hole! Boeing's detailed report, complete with tables, graphs and charts from their simulations, insists the hole isn't really there.