Myth: 1 G barrel rolls are impossible.

writes:

What happens to the g force acting on me as a pilot if I start in
straight and level, unaccelerated flight, and then I initiate a
coordinated turn?

The net force increases, as it results from both that induced by gravity
(which is constant) and that induced by your acceleration torwards the center
of the turn. In a coordinated, level turn, the force vector will be normal to
the airframe, and so you will have the impression that you are climbing
initially; when you finish the turn you'll have the impression that you are
descending briefly. This assumes that you keep your head level with the
wings.

Mxsmanic wrote in
:

writes:

What happens to the g force acting on me as a pilot if I start in
straight and level, unaccelerated flight, and then I initiate a
coordinated turn?

The net force increases, as it results from both that induced by
gravity (which is constant) and that induced by your acceleration
torwards the center of the turn. In a coordinated, level turn, the
force vector will be normal to the airframe, and so you will have the
impression that you are climbing initially; when you finish the turn
you'll have the impression that you are descending briefly. This
assumes that you keep your head level with the wings.


You're an idiot.

Bertie

Got it. What happens to the g force acting on me as a pilot if I start
in straight and level, unaccelerated flight, and then I use down
elevator and enter a descent?



On Jun 13, 12:56 am, Mxsmanic wrote:
writes:
What happens to the g force acting on me as a pilot if I start in
straight and level, unaccelerated flight, and then I initiate a
coordinated turn?

The net force increases, as it results from both that induced by gravity
(which is constant) and that induced by your acceleration torwards the center
of the turn. In a coordinated, level turn, the force vector will be normal to
the airframe, and so you will have the impression that you are climbing
initially; when you finish the turn you'll have the impression that you are
descending briefly. This assumes that you keep your head level with the
wings.

writes:

Got it. What happens to the g force acting on me as a pilot if I start
in straight and level, unaccelerated flight, and then I use down
elevator and enter a descent?

As you descend, you are accelerated downward. This acceleration is subtracted
from the constant acceleration imposed by gravity. If your acceleration
downward is less than 1.0 G, you experience a diminished G force, unchanged in
direction. If it is equal to 1.0 G (which would be quite a feat), you will
experience no G force at all. If it is greater than 1.0 G (unlikely indeed),
you'll feel a negative G force tending to lift you out of your seat. These
changes persist only for as long as you are accelerating downward; once you
are descending at a steady rate, you will again experience exactly 1.0 G.

The latter circumstances are unlikely because accelerating downward at 1.0 G
would give you a descent of 1920 fpm after one second, 3840 fpm after two
seconds, and so on.

Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.

What happens if I do both of these things simultaneously?



On Jun 13, 2:31 pm, Mxsmanic wrote:
writes:
Got it. What happens to the g force acting on me as a pilot if I start
in straight and level, unaccelerated flight, and then I use down
elevator and enter a descent?

As you descend, you are accelerated downward. This acceleration is subtracted
from the constant acceleration imposed by gravity. If your acceleration
downward is less than 1.0 G, you experience a diminished G force, unchanged in
direction. If it is equal to 1.0 G (which would be quite a feat), you will
experience no G force at all. If it is greater than 1.0 G (unlikely indeed),
you'll feel a negative G force tending to lift you out of your seat. These
changes persist only for as long as you are accelerating downward; once you
are descending at a steady rate, you will again experience exactly 1.0 G.



writes:
What happens to the g force acting on me as a pilot if I start in
straight and level, unaccelerated flight, and then I initiate a
coordinated turn?

The net force increases, as it results from both that induced by
gravity
(which is constant) and that induced by your acceleration torwards the
center
of the turn. In a coordinated, level turn, the force vector will be
normal to
the airframe, and so you will have the impression that you are
climbing
initially; when you finish the turn you'll have the impression that
you are
descending briefly. This assumes that you keep your head level with
the
wings.

wrote in message
oups.com...
Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.

What happens if I do both of these things simultaneously?


Blue Screen of Death?

On Jun 14, 7:08 am, "El Maximo" wrote:
wrote in message

oups.com...

Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.

What happens if I do both of these things simultaneously?

Blue Screen of Death?

ROTFL

writes:

Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.

More specifically, the G force induced by gravity is constant. As you
accelerate the aircraft by changing its direction, the total G force and its
direction acting upon you as the pilot also changes. You cannot eliminate
gravity, so there are some things that are impossible: for example, in level
flight, you cannot make a coordinated turn with a 90-degree bank, because that
would require a vertical component of zero in the acceleration forces acting
upon you, and the presence of gravity prevents that.

When you enter a coordinated, level turn, the G force you feel increases, but
its direction does not change. If you enter a descent, the G force diminishes
as you accelerate downward (your downward acceleration being subtracted from
the force of gravity), and then returns to 1.0 once your vertical speed is
constant.

What happens if I do both of these things simultaneously?

You get some combination of the above; there are several possibilities.

Mxsmanic wrote in
:

writes:

Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.

More specifically, the G force induced by gravity is constant. As you
accelerate the aircraft by changing its direction,


That what happened to you?

oop, syou don't fly.


BTW Anthony, what's the deal with you going bankrupt? personal choice, was
it?



bertie

'Some combination', 'several possibilities.' I'm confused by this -
can you be more precise? What are the possibilities?


writes:
Interesting. So if I enter a coordinated turn, the G force increases.
If I enter a descent, the G force decreases.



What happens if I do both of these things simultaneously?

On Jun 14, 1:49 am, Mxsmanic wrote:

You get some combination of the above; there are several possibilities.