Jim Logajan wrote in
:

Bertie the Bunyip wrote:
Nope. the only thing you can do at 1 G is straight and level flight.

Nope. I haven't worked out the vector math to see how many solutions
exist for other scenarios, but there are an infinite number of
solutions where the flight is straight but the aircraft is climbing
(or descending) at a constant velocity. So there is no requirment that
the flight be level.


OK, few excetions, but that's transient.


A useful experiment is to check your weight on an elevator - once it
reaches constant speed. (Obviously there are accelerations at the
beginning and end of the ride where the perception of force is
different than 1 G.)

Yeah yeah.



You can keep positive G around a barrel roll, but not 1 G

It's more complicated than that. What you say is true for circular
barrel rolls in level flight, but consider this scenario that also
yields 1 G and definitely not straight or level:

First, consider an aircraft in freefall.

Then that's not a barrel roll.



Bertie