>From http://www.definethis.org/word/Twa_841.html The 727 in question "... went into a spiral dive, losing about 34,000 feet in 63 seconds." and "It was later estimated from the flight data recorder that the plane was momentarily supersonic."
All contradicted by the official report:http://www.airdisaster.com/reports/ntsb/AAR81-08.pdf On Thu, 2007-07-12 at 13:53 +0200, Bernhard Kuhn wrote: > Richard Hornby wrote: > > See this thread for some more info: > > > > http://www.airdisaster.com/forums/showthread.php?t=54396 > > Funny reading, but sounds like a urban myth to me :-) > > A friend of mine is currently preparing himself for ATPL: > there is a big folder explaining jet engines and from > what i read there, it is impossible for standard turbofan > engines to get beyond Mach 1, simply because you need to > get the air speed below Mach 1 before you can feed it into > the first rotor stage (the same reason why propeller > airplaines can't go beyond mach 1, IIRC). This is why > the Concorde had a variable intake to slow down the > airflow before it gets to the engines: > > http://en.wikipedia.org/wiki/Image:Concordeintake.gif > > BTW.: this is not a problem for SCRAM jet engines since > they don't have a compressor with rotors/stators. > > regards > > Bernhard > > > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Flightgear-users mailing list Flightgear-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-users
