"Blueskies" wrote in message
. net...

"Danny Deger" wrote in message
...
:
: "Danny Deger" wrote in message
: ...
:
: Why does the shuttle throttle to 3 Gs on ascent?
:
:
: The 3 G throttling is done late in the flight (about 7:30)and has
nothing to
: do with dynamic pressure. It was designed in to allow "regular" people
fly
: the shuttle.
:
:

Yes, the aerodynamic loads are highest early in the flight so the engines
are throttled then back up. The shuttle rolls
over on its back to fake the occupants into feeling 3 gs when in fact the
vehicle is pushing 4 gs....

No.
The 3 Gs is at the backs of the occupants (and along that same axis for the
vehicle.) This is the same if they are heads up or heads down.
If you lie with your back on the floor, you feel the same 1 G if your head
is facing north or south.

Tim