[Jsbsim-devel] Integrators and trimming

[Jon B. <js...@ha...>]

Matt G. pointed out an interesting problem in trimming an aircraft that has an integrator
in the control system. Any ideas on how to get around this?

There may be a couple of approaches:

- Integrator windup prevention logic could be enabled during trimming, in order to
effectively bypass integration.
- The control surface positions could be set directly - rather than the control input
commands - until the trimmed position is found and then drive the input commands until
those surface deflections are found.

The problem with trimming an aircraft such as the F-16 is that it's neutrally stable at
best in flight.

Jon