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ALGLIB 4.08 update #2294

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Merged
lamont-granquist merged 1 commit into from
Jul 20, 2026
Merged

ALGLIB 4.08 update #2294

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12 changes: 7 additions & 5 deletions MechJebLib/Maneuvers/InterplanetaryTransfer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -160,7 +160,9 @@ private void NLPFunction(double[] x, double[] fi, double[,] jac, object? obj = n
DualV3 vsoi2helio = v2soi2 + vsoi2 / _targetToHelioScale.VelocityScale;

// solve from the burn to the soi1 interface
(DualV3 vi1, DualV3 vf1) = Izzo.Solve(1.0, r0Burn, rsoi1, dt2, _direction1, rtol: 1e-12);
// (use prograde/retrograde sense of the initial parking orbit--shortway/longway produces issues--might need to pick some other
// axis if we hit issues)
(DualV3 vi1, DualV3 vf1) = Izzo.Solve(1.0, r0Burn, rsoi1, dt2, _direction1, rtol: 1e-12, h: V3.Cross(_r0, _v0));

// solve the heliocentric trajectory from soi1 to soi2
// (this uses prograde/retrograde sense from the rsoi1helio x vsoi1helio plane since shortway/longway has a 180
Expand Down Expand Up @@ -332,22 +334,22 @@ private void NLPFunction(double[] x, double[] fi, double[,] jac, object? obj = n

var best = new Solution(V3.zero, 0.0, 0.0, 0.0, double.PositiveInfinity, double.PositiveInfinity);

_direction1 = TransferGeometry.ShortWay;
_direction1 = TransferGeometry.Prograde;
_direction2 = TransferGeometry.Prograde;
Solution sol1 = RunOptimizer(x0short, bndl, bndu, optguard);
best = UpdateBestSolution(sol1, best);

_direction1 = TransferGeometry.LongWay;
_direction1 = TransferGeometry.Retrograde;
_direction2 = TransferGeometry.Prograde;
Solution sol2 = RunOptimizer(x0short, bndl, bndu, optguard);
best = UpdateBestSolution(sol2, best);

_direction1 = TransferGeometry.ShortWay;
_direction1 = TransferGeometry.Prograde;
_direction2 = TransferGeometry.Retrograde;
Solution sol3 = RunOptimizer(x0long, bndl, bndu, optguard);
best = UpdateBestSolution(sol3, best);

_direction1 = TransferGeometry.LongWay;
_direction1 = TransferGeometry.Retrograde;
_direction2 = TransferGeometry.Retrograde;
Solution sol4 = RunOptimizer(x0long, bndl, bndu, optguard);
best = UpdateBestSolution(sol4, best);
Expand Down
6 changes: 3 additions & 3 deletions MechJebLibTest/PSGTests/AscentTests/KerbinTests.cs
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Expand Up @@ -38,8 +38,8 @@ private void MainSailTinCanVacuum()

psg.PrimalFeasibility.ShouldBeZero(1e-5);
solution.Vgo(t0).ShouldEqual(2603.1239482534565, 1e-3);
// there's about 8 seconds extra burntime here due to throttling down, which these tests may be very sensitive to
solution.Tgo(t0).ShouldEqual(554.04809755858685, 1e-3);
// there's about 14 seconds extra burntime here due to throttling down, which these tests may be very sensitive to
solution.Tgo(t0).ShouldEqual(560.53674689893228, 1e-3);

(V3 rf, V3 vf) = solution.TerminalStateVectors();
}
Expand Down Expand Up @@ -68,7 +68,7 @@ private void MainSailTinCanAtmo()
psg.PrimalFeasibility.ShouldBeZero(1e-5);
solution.Vgo(t0).ShouldEqual(3521.7544134539125, 1e-3);
// there's about 110 seconds extra burntime here due to throttling down, which these tests may be extremely sensitive to
solution.Tgo(t0).ShouldEqual(394.66454166378765, 1e-3);
solution.Tgo(t0).ShouldEqual(388.2458105314372, 1e-3);

(V3 rf, V3 vf) = solution.TerminalStateVectors();
}
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