Path: Interplanetary/Mars
% Mars planar orbit optimization - round-trip Calculate the optimal thrust to achieve a planar trajectory to the desired final orbit, assuming a certain specific impulse (exhaust velocity) and specific power for the engine. * Mars: SMA 1.523679 AU, eccentricity 0.0934 * apehelion: 1.666 AU * perihelion: 1.3814 AU A good solution has a smooth change in phi and linear change in u (up until switch point, then down). If there is excess radial velocity on arrival, try increasing the transit time. If any of the angles become near pi or -pi, the optimization gets confused. It can help to manually set these value to a neighboring value and rerun the optimization from the prior values. With the objective gradient and restricted variable limits, solutions can be reach in about 50 iterations. See also: PlanarHelioOptimal, SimulatePlanarHelioTrajectory, PlanetHelioPhase, StraightLineReport, OrbitRoundTripTransferTimes
Interplanetary: Ephemeris/PlanetHelioPhase Interplanetary: Optimization/OrbitRoundTripTransferTimes Interplanetary: Optimization/PlanarHelioOptimal Interplanetary: Optimization/SimulatePlanarHelioTrajectory SC: BasicOrbit/El2RV SC: BasicOrbit/OrbRate SC: BasicOrbit/RVFromKepler StraightLine: ConstantAccel/ThrustElectric StraightLine: ConstantThrust/ComputeDuration StraightLine: ConstantThrust/ComputeThrust StraightLine: ConstantThrust/SimulateStraightLineTrajectory StraightLine: ConstantThrust/Straight2DStructure StraightLine: ConstantThrust/StraightLineReport Common: Database/Constant Common: Time/Date2JD
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