Module model_rocket 

Model-rocket conveniences: RASP .eng motor files, apogee recovery drag, and illustrative airframe presets. No new integrator code — these are data parsers and a force-model wrapper on the existing machinery.

Structs

Airframe

Illustrative airframe parameters for common model-rocket shapes. These are generic, not measured data for any particular kit.

MotorFile

A parsed RASP motor file (the .eng format used by thrustcurve.org and OpenRocket): a header line of manufacturer, designation, diameter, length, delays and masses, then time/thrust samples.

RecoveryForces

Apogee recovery: a stateless force-model wrapper that swaps the inner model for recovery drag once the vehicle is descending (vy <= 0) and the simulation time is at or past deploy_after_s. Recovery drag replaces the inner acceleration entirely except for gravity: a = g − (q·CdA/m)·v̂ evaluated against local air. Terminal velocity sqrt(2·m·g/(ρ·CdA)) emerges naturally.