DMGB Systems — Hall thruster teaching model

This package contains an editable conceptual CAD cutaway, informed by NASA
SmallSat State of the Art 2026, In-Space Propulsion, Figure 4.30
(PDF page 36 / printed page 91). It is not a replica of a particular engine.
The dimensions are arbitrary teaching proportions. STEP millimetres are an
exchange convention, not manufacturing dimensions. A removed quarter-sector
reveals internal parts; that opening is not part of an operating thruster.

Files
  build_hall_effect_thruster_cad.py: parametric source
  hall-effect-thruster-cutaway.step: editable solid geometry
  hall-effect-thruster-cutaway.stl: mesh geometry
  hall-effect-thruster-components.csv: component descriptions
  hall-effect-thruster-assumptions.json: assumptions and geometry checks
  hall-effect-thruster-*.png: views rendered from the CAD geometry

Rebuild in an environment with Python, CadQuery 2.7 and Matplotlib installed:
  python build_hall_effect_thruster_cad.py --help
The script's optional workspace fallback is not required when CadQuery is
installed normally. Read the script's CLI options before choosing output paths.

Fields and flow arrows are explanatory graphics, not CAD hardware, computed
fields or calculated particle trajectories. Central cathode placement is one
configuration; other Hall thrusters use external cathodes. No acceleration
grids or magnet arrangement are asserted by this model.

Solid validity and STEP re-import checks establish readable geometry only.
No plasma, thermal, structural, thrust, efficiency, erosion or lifetime result
is established. No flight or manufacturing validation is implied.

Source: https://www.nasa.gov/wp-content/uploads/2026/05/4-in-space-propulsion-chapter-2026-final.pdf
NASA attribution identifies the explanatory reference, not endorsement.