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z acceleration : aircraft referential or 3rd dimension?

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z acceleration : aircraft referential or 3rd dimension?

Postby bobibob » Wed May 04, 2022 8:24 am

Is the z acceleration property ( /accelerations/pilot/z-accel-fps_sec ) the real z acceleration in the aircraft referential or simply the 3rd dimension pointing always verticaly ?
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Re: z acceleration : aircraft referential or 3rd dimension?

Postby Thorsten » Wed May 04, 2022 10:28 am

It's in aircraft coordinates, the alternative provided is inertial coordinates or earth-co-rotating coordinates, but as far as I know only rendering uses a coordinate system in which z is up, as this is a curvilinear coordinate system (for which rendering just does not care and drops the errors).
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Re: z acceleration : aircraft referential or 3rd dimension?

Postby bobibob » Wed May 04, 2022 1:25 pm

Thnaks so the Z acceleration is always pointing up/verticaly and is not in the aircraft referential?
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Re: z acceleration : aircraft referential or 3rd dimension?

Postby Alant » Wed May 04, 2022 1:48 pm

No.
X, Y Z accelerations are in aircraft co-ordinates. - as Thorsten says in the first four words of his reply.
The rest of his reply is probably confusing you.
Alan
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