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Secant #65

Merged
merged 4 commits into from May 23, 2019
Merged

Secant #65

merged 4 commits into from May 23, 2019

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dkavolis
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Use the secant method to find a stable angle of attack for stability derivative calculation:

  • More robust than Brent's method since it does not depend on brackets having different signs
  • Generally faster to converge, usually takes ~5-6 function calls
  • Only fails very near the edge of the stable flight envelope

In addition, fix stability labels crashing GUI if any of the values are NaN and show NaN angle of attack if the solver did not converge

@dkavolis
handle NaN values
f69a817
@dkavolis
replace SegmentSearchMethod with Secant
61b2fb1 
* keep track of number of function calls in root solvers
* return OptimizationResult struct instead of double
* use Secant to find stable AoA
* use NaN values if failed to converge
@dkavolis
recompile
3d3b826
@dkavolis
Update README.md
b242c5d
@dkavolis dkavolis merged commit 3cb4f9d into master May 23, 2019
@dkavolis dkavolis deleted the secant branch May 23, 2019 22:02
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@dkavolis