Python API

The installed namespace is ensim. Core numerical modules do not require a Qt event loop.

from ensim.core.chemistry import CombustionProblem
from ensim.core.propulsion import NozzleConditions, calculate_performance
from ensim.utils.nasa_parser import load_default_database

Principal modules

Module	Responsibility
ensim.core.chemistry	equilibrium and adiabatic chamber solution
ensim.core.thermodynamics	NASA polynomial properties
ensim.core.propulsion	ideal nozzle relations and station profiles
ensim.core.cooling	preliminary regenerative-cooling correlations
ensim.core.flight_6dof	rigid-body flight propagation
ensim.core.geodesy	WGS-84, ECEF/ECI transforms and J2 gravity
ensim.core.monte_carlo	flight dispersion
ensim.core.engine_uq	reduced-order engine UQ
ensim.core.optimization	reduced-order engineering objectives

Unit contract

Unless a parameter name says otherwise, the API uses SI. The established thermochemistry boundary reports mean molecular weight in g/mol. Read each dataclass/function docstring and validate domains before composing models.

See chemistry and propulsion for short examples. Public code should not import src.core or manipulate the source-tree layout.