test_combustion_stability_audit.TestNyquistAllCrossings Class Reference

Inheritance diagram for test_combustion_stability_audit.TestNyquistAllCrossings:

Collaboration diagram for test_combustion_stability_audit.TestNyquistAllCrossings:

Public Member Functions
	case (self)
	L_indep (self, s)
	test_gain_margin_catches_minus_3pi (self)
	test_rich_tier_finds_the_growing_root (self)

Static Public Attributes
float	Pc = 3.61e6
	O = dict(mdot=0.9907, eta=0.3745, dPf=648654.0, L=0.6093, A=1.534e-4, tau=1.638e-3)
	F = dict(mdot=0.7122, eta=0.1775, dPf=625208.0, L=0.9913, A=3.534e-4, tau=13.85e-3)
	cstar
	At
	Lstar
	gamma

Detailed Description

STAB-5: a -3pi crossing the old -pi-only test missed (GM read 4.27, loop unstable).

Definition at line 115 of file test_combustion_stability_audit.py.

Member Function Documentation

case()

test_combustion_stability_audit.TestNyquistAllCrossings.case

(

self

)

Definition at line 123 of file test_combustion_stability_audit.py.

References At, engine.layerx.diag.start.StartChamber.cstar, engine.pipeline.combustion_physics.CstarWideTable.cstar, engine.pipeline.stability.chug.ChugChamber.cstar, feedtwin.engine.design.EngineDesign.cstar, cstar, fsw::control::RobustDDPController::EngineEstimate.F, F, engine.stability_hifi.meanflow.spec.MeanFlowSpec.gamma, feedtwin.comps.base.FlowConditions.gamma, feedtwin.engine.chamber.CombustionState.gamma, feedtwin.engine.chamber.ConstantCStar.gamma, payload.cold_gas_thruster.ColdGasThrusterConfig.gamma, gamma, engine.pipeline.config_schemas.ChamberConfig.Lstar, engine.pipeline.config_schemas.ChamberGeometryConfig.Lstar, payload.cold_gas_thruster.ColdGasThrusterConfig.Lstar, Lstar, O, engine.pipeline.cea_cache.CEAAuxTables.Pc, engine.pipeline.combustion_physics.CstarOfMR.Pc, engine.pipeline.combustion_physics.CstarWideTable.Pc, engine.pipeline.stability.chug.ChugStream.Pc, engine.stability_hifi.meanflow.spec.ProvenanceRecord.Pc, and Pc.

Referenced by test_gain_margin_catches_minus_3pi(), and test_rich_tier_finds_the_growing_root().

L_indep()

test_combustion_stability_audit.TestNyquistAllCrossings.L_indep	(		self,
			s )

Open loop written here from eq. 3.3, not imported.

Definition at line 128 of file test_combustion_stability_audit.py.

References At, engine.layerx.diag.start.StartChamber.cstar, engine.pipeline.combustion_physics.CstarWideTable.cstar, engine.pipeline.stability.chug.ChugChamber.cstar, feedtwin.engine.design.EngineDesign.cstar, cstar, fsw::control::RobustDDPController::EngineEstimate.F, F, engine.stability_hifi.meanflow.spec.MeanFlowSpec.gamma, feedtwin.comps.base.FlowConditions.gamma, feedtwin.engine.chamber.CombustionState.gamma, feedtwin.engine.chamber.ConstantCStar.gamma, payload.cold_gas_thruster.ColdGasThrusterConfig.gamma, gamma, engine.pipeline.config_schemas.ChamberConfig.Lstar, engine.pipeline.config_schemas.ChamberGeometryConfig.Lstar, payload.cold_gas_thruster.ColdGasThrusterConfig.Lstar, Lstar, O, engine.pipeline.cea_cache.CEAAuxTables.Pc, engine.pipeline.combustion_physics.CstarOfMR.Pc, engine.pipeline.combustion_physics.CstarWideTable.Pc, engine.pipeline.stability.chug.ChugStream.Pc, engine.stability_hifi.meanflow.spec.ProvenanceRecord.Pc, and Pc.

Referenced by test_gain_margin_catches_minus_3pi(), and test_rich_tier_finds_the_growing_root().

test_gain_margin_catches_minus_3pi()

test_combustion_stability_audit.TestNyquistAllCrossings.test_gain_margin_catches_minus_3pi

(

self

)

Definition at line 138 of file test_combustion_stability_audit.py.

References case(), and L_indep().

test_rich_tier_finds_the_growing_root()

test_combustion_stability_audit.TestNyquistAllCrossings.test_rich_tier_finds_the_growing_root

(

self

)

Definition at line 152 of file test_combustion_stability_audit.py.

References case(), and L_indep().

Member Data Documentation

At

test_combustion_stability_audit.TestNyquistAllCrossings.At

static

Definition at line 121 of file test_combustion_stability_audit.py.

Referenced by case(), and L_indep().

cstar

test_combustion_stability_audit.TestNyquistAllCrossings.cstar

static

Definition at line 121 of file test_combustion_stability_audit.py.

Referenced by case(), feedtwin.engine.chamber.ConstantCStar.combustion(), L_indep(), and feedtwin.engine.card.ChamberCard.to_dict().

F

test_combustion_stability_audit.TestNyquistAllCrossings.F = dict(mdot=0.7122, eta=0.1775, dPf=625208.0, L=0.9913, A=3.534e-4, tau=13.85e-3)

static

Definition at line 120 of file test_combustion_stability_audit.py.

Referenced by case(), L_indep(), test_numba_ab_parity.TestChugKernelMatchesPython.test_minus_3pi_crossing(), and test_numba_ab_parity.TestChugKernelMatchesPython.test_randomised_loops().

gamma

test_combustion_stability_audit.TestNyquistAllCrossings.gamma

static

Definition at line 121 of file test_combustion_stability_audit.py.

Referenced by case(), L_indep(), and engine.pipeline.stability.chug.ChugChamber.theta_c().

Lstar

test_combustion_stability_audit.TestNyquistAllCrossings.Lstar

static

Definition at line 121 of file test_combustion_stability_audit.py.

Referenced by case(), L_indep(), and engine.pipeline.stability.chug.ChugChamber.theta_c().

O

test_combustion_stability_audit.TestNyquistAllCrossings.O = dict(mdot=0.9907, eta=0.3745, dPf=648654.0, L=0.6093, A=1.534e-4, tau=1.638e-3)

static

Definition at line 119 of file test_combustion_stability_audit.py.

Referenced by case(), L_indep(), test_numba_ab_parity.TestChugKernelMatchesPython.test_minus_3pi_crossing(), and test_numba_ab_parity.TestChugKernelMatchesPython.test_randomised_loops().

Pc

float test_combustion_stability_audit.TestNyquistAllCrossings.Pc = 3.61e6

static

Definition at line 118 of file test_combustion_stability_audit.py.

Referenced by case(), L_indep(), and engine.pipeline.stability.timelag.ChamberThermo.Pc_bar().

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The documentation for this class was generated from the following file:

• EngineDesign/tests/test_combustion_stability_audit.py