Simplex Trim Roundtable

Simplex Trim Properties

Name	Type	Default	Notes
trim/solver/pause	Bool	false	Pause at each step of the simplex convergence. Requires the user to press enter.
trim/solver/showConvergeStatus	Bool	true	Show each step of the convergence process.
trim/solver/showSimplex	Bool	false	Show the vertices of the simplex at each step of the solver.
trim/solver/abstol	Double	0.01	The absolute error tolerance, how low the cost must be to terminate the minimization.
trim/solver/rtol	Double	0.00001	The relative error tolerance. How small the simplex can be before minimization is terminated. The simplex shrinks when it reaches a local minimum.
trim/solver/speed	Double	2	How much the simplex stretches in the direction of the minimum vertex direction. Must be greater than 1. Typical is 2.
trim/solver/iterMax	Double	2000	Maximum number of iterations the solver will run before terminating.
trim/solver/random	Double	0	Adds a random factor to the simplex stretch. Not typically required. Causes convergence to slow down. 1 means that the new vertex can randomly move 100% of the stretch distance after the stretch occurs.
trim/solver/debugLevel	Int	0	0 (no messages) -> 2 (all messages)
trim/solver/variablePropPitch	Bool	false	Add a state for the propeller pitch. If the pitch is not variable this is not required.
trim/solver/aileronGuess	Double	0	Initial guess for the trim aileron position
trim/solver/aileronStep	Double	0.1	Initial step size for aileron
trim/solver/aileronMax	Double	1.00	Maximum value for aileron control
trim/solver/aileronMin	Double	-1.00	Minimum value for aileron control
trim/solver/elevatorGuess	Double	-0.1	Initial guess for the trim elevator position
trim/solver/elevatorMax	Double	1.0
trim/solver/elevatorMin	Double	-1.0
trim/solver/rudderGuess	Double	0	Initial guess for the trim rudder position
trim/solver/rudderStep	Double	0.1
trim/solver/rudderMax	Double	1.00
trim/solver/rudderMin	Double	-1.00
trim/solver/throttleGuess	Double	0.50	Initial guess for the trim throttle position
trim/solver/throttleStep	Double	0.1
trim/solver/throttleMax	Double	1.0
trim/solver/throttleMin	Double	0.0
trim/solver/alphaGuess	Double	0.1	Initial guess for the trim angle of attack (in Radians)
trim/solver/alphaStep	Double	0.1
trim/solver/alphaMax	Double	1.8
trim/solver/alphaMin	Double	0
trim/solver/betaGuess	Double	0	Initial guess for the trim side slip angle (in Radians)
trim/solver/betaMax	Double	0.15
trim/solver/betaMin	Double	-0.15
trim/solver/betaStep	Double	0.1