Dyson

Last updated January 31, 2026

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Contra-rotating planetary gear architecture: DysonRecent Research Landscape

Mechanical power loss and weight penalties in high-bypass engines increase fuel burn. This assembly optimizes the torque-speed ratio between the turbine and fan to maximize propulsion efficiency.

What technical problems is Dyson addressing in Contra-rotating planetary gear architecture?

Excessive propulsion system weight

(3)evidences

Inefficient kinetic energy transfer between turbine stages and impellers. Minimizing residual swirl and drag increases overall propulsion efficiency.

Excessive propulsion system weight

(3)evidences

Excessive mass and aerodynamic drag in high-bypass engines limit fuel efficiency. Reducing the physical footprint of the drive assembly increases the thrust-to-weight ratio.