Myth: 1 G barrel rolls are impossible.

On 06/14/07 15:29, Jim Stewart wrote:
wrote:
Hang on, let's keep things simple:

1. If I enter a coordinated turn, I experience an increase in Gs.
2. If I enter a descent, I experience a decrease in Gs.

If I do these two things at the same time, it is possible to enter a
descending turn without any change in Gs. Just as long as I
continously feed in enough down elevator to offset the increasing Gs
from the turn, the force on the airframe and me, the pilot, will stay
at 1 G.

Isn't there some sinister name for this
when it happens to a non-IFR pilot in a cloud?


Actually, the same name applies whether or not the pilot holds an
Instrument Rating.


--
Mark Hansen, PP-ASEL, Instrument Airplane, USUA Ultralight Pilot
Cal Aggie Flying Farmers
Sacramento, CA

And he could report the very same sensations actual pilots feel.

As a matter of fact, I flew that barrel roll once in the past 24
hours, at 1 g actual.

On Jun 15, 10:06 am, "El Maximo" wrote:
wrote in message

ps.com...

Here's a very realizable one g roll for any airplane -- it just
depends on one's frame of reference. I'll choose the sun, and get a
slow 1 G barrel roll with an 8000 mile diameter in 24 hours. Depending
on the direction the airplane is tied down, it could be backwards.

MX could even 'fly' that one g

Mxsmanic wrote in
:

george writes:

Graveyard spiral dive

Which probably isn't a coincidence, since pilots likely get into these
precisely because they maintain "normal" G forces.


Nope, wrong again, fjukktard.

Bertie

Mxsmanic wrote in
:

writes:

Hang on, let's keep things simple:

1. If I enter a coordinated turn, I experience an increase in Gs.
2. If I enter a descent, I experience a decrease in Gs.

If I do these two things at the same time, it is possible to enter a
descending turn without any change in Gs.

Yes. Note, however, that you must _accelerate_ downward, and not
merely drift downward at a constant rate.

Just as long as I
continously feed in enough down elevator to offset the increasing Gs
from the turn, the force on the airframe and me, the pilot, will stay
at 1 G.

The additional G from the acceleration towards the center of the turn
will be constant, but the offsetting G from the descent will be
constant only if you continuously accelerate downward.

Of course, all combinations are indeed possible. But this interesting
special case of the situation exists, doesn't it, in which there is
no change in the force felt by the pilot?

Yes. It sounds a lot like a spin.

No, it doesn;t., fjukktard.



Bertie

writes:

Right. A major part of your argument in this thread has been that it
is impossible to change the direction in which the plane is travelling
without accelerating the plane.

Yes.

Your own analysis, based on my questions, clearly shows that it
is possible to change the direction the plane is going in without
deviating from the 1G being exerted.

Accelerations sometimes reinforce each other, and sometimes cancel each other.
Even when they cancel each other, they do not disappear.

El Maximo writes:

It's called orbital velocity

http://electronics.howstuffworks.com/satellite3.htm

Any object following a ballistic trajectory (disregarding aerodynamic effects)
is in orbit.

"Mxsmanic" wrote in message
...

Any object following a ballistic trajectory (disregarding aerodynamic
effects)
is in orbit.

And your point is?

On Jun 15, 4:42 pm, Mxsmanic wrote:
george writes:
Graveyard spiral dive

Which probably isn't a coincidence, since pilots likely get into these
precisely because they maintain "normal" G forces.

Berties right!
You are every thing he says..
FYI a noninstument rated pilot entering IFR conditions has about 90
seconds of life remaining.
The resulting high speed spiral dive is a result losing all visual
references and becoming disorientated in cloud...

Mxsmanic wrote in
:

writes:

Right. A major part of your argument in this thread has been that it
is impossible to change the direction in which the plane is
travelling without accelerating the plane.

Yes.

Your own analysis, based on my questions, clearly shows that it
is possible to change the direction the plane is going in without
deviating from the 1G being exerted.

Accelerations sometimes reinforce each other, and sometimes cancel
each other. Even when they cancel each other, they do not disappear.



Wrong again bankruptcy boi.


Bertie

Mxsmanic wrote in
:

El Maximo writes:

It's called orbital velocity

http://electronics.howstuffworks.com/satellite3.htm

Any object following a ballistic trajectory (disregarding aerodynamic
effects) is in orbit.


nope.


Wrong again

Not even curious as to how I know you're wrong?





Bertei