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51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
import math
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target_integloop.getIntegrator(trick.Runge_Kutta_Fehlberg_45, 42)
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# Set up the Monte Carlo runs.
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#trick.mc_set_dry_run(1)
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trick.mc_set_enabled(1)
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trick.mc_set_num_runs(200)
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var0 = trick.MonteVarCalculated("target.target_state.velocity[0]")
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var1 = trick.MonteVarCalculated("target.target_state.velocity[1]","m/s")
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var2 = trick.MonteVarCalculated("target.target_state.velocity[2]")
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trick_mc.mc.add_variable(var0)
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trick_mc.mc.add_variable(var1)
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trick_mc.mc.add_variable(var2)
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#slave0 = trick.MonteSlave("localhost")
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#slave1 = trick.MonteSlave("localhost")
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#slave0 = trick.MonteSlave("Megatron")
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#trick_mc.mc.add_slave(slave0)
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#trick_mc.mc.add_slave(slave1)
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# Set the iteration limit. */
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iterate.iterate_data.iter_max = 12;
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# Set the initial body position. */
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target.target_state.position[0] = trick.attach_units( "km", -7378.0)
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target.target_state.position[1] = trick.attach_units( "km", 0.0)
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target.target_state.position[2] = trick.attach_units( "km", 0.0)
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# Compute the initial circular velocity from position. */
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#target.state.velocity[0] {km/s} = 0.0, 7.350214, 0.0;
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pi = 3.14159265358979323846264338328;
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mu = float(target.target_planet.mu);
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r_mag = math.sqrt( (float(target.target_state.position[0]) * float(target.target_state.position[0]))
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+ (float(target.target_state.position[1]) * float(target.target_state.position[1]))
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+ (float(target.target_state.position[2]) * float(target.target_state.position[2])) );
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r_3 = r_mag * r_mag * r_mag;
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target.target_state.velocity[0] = 0.0;
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target.target_state.velocity[1] = math.sqrt( mu / r_mag );
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target.target_state.velocity[2] = 0.0;
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# Set the desired terminal position. */
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target.target_data.position[0] = trick.attach_units( "km", 2*7378.0)
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target.target_data.position[1] = trick.attach_units( "km", 0.0)
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target.target_data.position[2] = trick.attach_units( "km", 0.0)
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# Compute the stop time. */
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trick.stop( pi * math.sqrt( r_3 / mu ) )
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