What is DinoTail?


The DinoTail is the name of a noise-canceling device, which is attached to wind turbine blades and refers to its resemblance to the serration on a dinosaur tail.

In 2000, Siemens Gamesa unveiled the DinoTail idea. It uses a serrated trailing edge installed at the blade as an aerodynamic blade addition to lower sound levels.

Siemens Gamesa recently advanced this idea with DinoTails Next Generation, which takes a novel approach, as a result of ongoing innovation. This cutting-edge technical innovation, which was inspired by the owl’s stealthy flight, enhances the positive effect of the serrated edge by including finer combs between the teeth. Little flow structures are produced by these tiny combs, greatly reducing noise.

Using cutting-edge validation techniques, Siemens Gamesa validated DinoTails Next Generation by combining field data with highly accelerated lifetime and power/noise curve measurements with acoustic and aerodynamic wind tunnel testing. At all wind speeds, the results demonstrated reliable performance with a sizable noise reduction without losing power.

What are the Noise Sources of Wind Turbines?

Noise from the blades’ aerodynamics is the main source:

  • Airflow across a blade’s surface that is turbulent causes noise.
  • The outer part of the blades makes the most noise.
  • The noise made by the blade’s trailing edge.

Why is DinoTail Important?

The DinoTail idea by Siemens Gamesa is important because of the following reasons.

  • To stay under the permitted noise levels, many onshore wind turbines must be reduced.
  • As a result, there is a loss in energy production of about 2-4% AEP per dB.
  • More electricity can be generated by quiet wind turbines at reduced energy costs.

What are the Applications of DinoTail?

The majority of onshore SGRE platforms already support DinoTails:

  • Both existing and new turbines (retrofit).
  • Significant reductions in sales noise:
  • Reduce noise while maintaining the same AEP.
  • Platform Siemens Gamesa 2.X: -2.0 dB.
  • Platform Siemens Gamesa 3.X: -2.3 dB.
  • Platform Siemens Gamesa 4.X: -2.3 dB.
  • -1.5 dB for Legacy Gamesa (G90-2.0 MW and G97-2.0 MW).
  • AEP and noise optimization on the direct drive platform.
  • Reduced LCOE for locations with noise constraints.

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