Propeller turbines

Propeller turbines

Highly efficient, robust fixed-blade solutions optimized for consistent flow and multi-unit hydropower plants.

The Propeller-type turbine is essentially a highly streamlined, fixed-blade variation of the classic Kaplan turbine. It is engineered specifically for installations where only small variations in water flow are expected.

Because of its simplified and durable fixed-blade design, it performs exceptionally well in hydropower plants equipped with four or more units of the same type, delivering reliable baseload generation with outstanding life expectancy.

Operational parameters

Operating headsfrom 5 m up to 75 m.
Power outputUp to 110 m
Runner diameterup to 10 m
Flow typeFixed Blade, Axial Flow, and Mixed Flow arrangements
Regulationfixed runner blade and regulated guide vanes (wicket gates)
Optimal appliacationIdeal for stable flow conditions and multi-unit powerhouse configurations

Maximum peak efficiency

Fixed-blade geometry locks the runner at its absolute optimal pitch. This delivers exceptionally high peak efficiency at rated flows, making it a powerful baseload workhorse for rivers with stable discharges.

Multi-unit plant synergy

The most cost-effective choice for plants with four or more identical units. Operators simply step individual units online or offline as flow conditions change, maintaining peak plant efficiency without the cost of variable-pitch runners.

Ultra-robust, simplified hub

The absence of internal blade angle control mechanisms results in a simpler and more robust hub design. This lowers manufacturing and maintenance costs while eliminating the potential for hub oil leakage into the water passage.

Ready to build your next powerhouse?

Whether you are planning a greenfield installation or need to uprate a century-old turbine, our engineering teams are ready to architect your solution.