wake turbulence

From:         "Fred Christiansen" <fredch@quad4.phx.mcd.mot.com>
Date:         17 Jun 94 23:59:08 
Followups:    1 2 3 4 5
Next article
View raw article
  or MIME structure

Seeing the amount of thrust that the PW4084's can put out on the 777 prompts
me to ask about wake turbulence.  It is my understanding that wake turbulence
has been a problem with the "heavies" -- DC-10, MD-11, 747, 767, TriStar.
My guess was that this was due to the large amount of thrust put out by
the engines of these aircraft.  I heard on the radio that it is now known
that the 757 has significant wake turbulence, just like a "heavy".  The
report did not say, as I recall, but I again guessed it was due to engine
thrust.  If that's the case, what sort of wake turbulence will a 777 put
out?  The thrust on those engines is amazing!  Are there high-engine-thrust
airplanes w/o wake turbulence problems?  Why did the 757 problem come as
a surprise?
Fred Christiansen ("Canajun, eh?" from Ontario)  Email: fredch@phx.mcd.mot.com
Disclaimer: I do not speak for Motorola Computer Group       Fax: 602-438-3836
"For the transgression of a land many are the princes thereof: but by a man of
 understanding and knowledge the state thereof shall be prolonged." Prov 28:2