TERRAN DYNAMICS / A20 RESEARCH PLATFORM
Revision R0 — September 2026

STATUS
Original parametric actuator research and engineering investigation.
Geometry and sizing study; not a manufacturing release or proven product.

ARCHITECTURE
Frameless brushless motor with nested planetary reduction.
Stage 1: 4:1. Stage 2: 5:1. Total reduction: 20:1.
Direct stator-to-aluminum thermal path; separately supported output bearings.
Custom transmission and structural geometry; supplier motor geometry is included for context.

DESIGN PARAMETERS
Nominal supply: regulated 48 V bench bus with regeneration management.
Maximum flange diameter: 144 mm.
Modeled CAD mass: approximately 4.85 kg.
Modeled components: 76.
Mass excludes unmodeled hardware and does not represent a complete qualified product.

VALIDATION STATUS
No loaded operation, motor commissioning, fatigue testing, tolerance-qualified assembly, or manufacturing quote is established by this study.
Continuous and peak performance ratings, lifetime, and production availability are not published.
Gear processing, heat treatment, bearing fits, thermal boundaries, control integration, and real load testing remain engineering work.

WEBSITE IMAGERY
The opening product image is an artistic design concept.
The interactive research viewer uses the A20 R0 CAD tessellation.
Neither visualization establishes tested performance or manufacturing readiness.