Peter Frederick <psf...@earthlink.net> writes:
> I'm not sure how much more "out of the flight envelope" you can be
> flying a full sized jetliner out of a cloud going almost straight down
> with the never exceed speed warning blasting! This happened to both
> Boeing 707s and Douglas DC8's at least once in the 60's, and both
> survived -- the 707 pilot firewalled the throttles (nose comes up
> because the engines are so far below centerline and the speed of sound
> is higher the lower you are), the DC8 pilots put all four engines in
> full reverse thrust at Mach .98. Bent both planes into junk. but they
> landed safely with all the passengers and crew essentially un-injured.
Of concern, then is some of the motivation for FBW aircraft (quoting
Wikipedia):
"Since these systems can also protect the aircraft from overstress
situations, the designers can therefore reduce over-engineered
components, further reducing weight."
So here you have a philosophy that because the plane "cannot" exceed its
design parameters, we don't have to engineer for the worst case that it
actually does.
Allan
--
1983 300D
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
