Core

The engineering math layer. Contains unit conversions, geometric primitives (circle/cylinder areas, contour extraction), compressible and incompressible flow relations, nozzle performance calculations, and mechanical properties (CoG, inertia tensors).

Submodules:

• compressible_flow — Isentropic relations, thrust coefficients, nozzle loss models
• interpolation — Non-extrapolating bounded cubic spline for tabulated curves
• mass_balance — Chamber-pressure ODE shared by solid motors and biliquid engines
• performance — Total and specific impulse
• solvers — RK4 ODE solver

machwave.core

Core physics, numerical methods, and geometry utilities.

Functions here are based on fundamental physics and mathematics and are considered nearly immutable across the codebase.