TURBINE PROJECT · 2026

Metro Dynamics

We explore how compact turbines can use airflow in subway tunnels to generate electricity.

Technical Specifications

GWAIHIR-01, our first turbine prototype, uses a shared test rig to compare two rotor designs. Dimensions and component specifications below are CAD references. The physical prototype uses PLA and PETG.

ROTOR COMPARISON90° / 45°

Total twist of rotors A and B

CAD design angles for the two helical Savonius variants.
ROTOR GEOMETRY120 × 240 mm

Rotor A diameter × active height

Nominal dimensions from the CAD model.
SHARED SHAFTØ 8 mm

Vertical precision shaft

CAD shaft diameter for both rotor designs.
BEARINGS2 × 608

Upper and lower bearings

CAD reference uses 608-ZZ ball bearings with an 8 mm bore.
FABRICATIONPLA & PETG

3D-printed prototype parts

The turbine prototype has been built.
TIMING BELT DRIVE60T / 18T

Rotor and generator pulleys

CAD tooth counts for the MXL drive.

Our Team

Inside the Turbine

Select a component to explore its design and CAD specifications.

GWAIHIR-01 · CAD rendering
CAD rendering of the GWAIHIR-01 turbine test rig

The first Metro Dynamics turbine prototype.

Awards

GWAIHIR-01 in 3D

Drag to rotate. Scroll, pinch, or use + and − to zoom. Shift-drag or drag with two fingers to pan.

CAD preview of the GWAIHIR-01 turbine test rig
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GWAIHIR-01 · CAD MODEL3D / INTERACTIVE