If you want teeth rattling and the feeling that your heart is going to
vibrate though your chest, you should try a B-52G with all 8 burning water
(water injection for the uninitiated).

I never got to work on the SR-71, but their power runs were always awesome.
Your teeth rattled from a 1/2 mile away.



"jc" wrote in message
...
On Sun, 16 Dec 2007 11:46:08 +0100, Michael Huber

wrote:

Markus Baur wrote:

is there already a report out what really happeend .. ?

Can't find the link now. They did a max power test, and apparently mx ran
up
all four engines simultaneously instead of one by one, overpowering the
aircraft's brakes.

I would suggest that one does not do full power runs "one at a time" on a
large
airplane with wing engines. If you do, the thing is liable to spin like
a top.
Every airline I've that I've ever worked on their airplanes had a policy
of
running at least two wing engines at the same time, one on each side, for
full
power runs. Twin and tri-engined airplanes required that both wing
engines be
run at the same time for full power runs. In fact, that same policy was
used on
TWA's Connies (other airlines with prop airplanes I'm not sure about).

Generally, not all 4 are run at full power although I've done so on 707's
and
747's a few times in the past (we always used chocks on all wheels, too,
including the nose). It's somewhat exhilarating, if you like getting your
teeth
rattled. Even more so if standing outside, next to an engine at full
power. It
vibrates you to the core.
Cheers,
jc