Historical rarities !

[topspeed]

I got this rare pic from 1931 from a gas station keeper in Hailuoto ( Shark Island ) on my recent test attempt.



It displays pretty sizeable perhaps 40 meter high system that seems to have 24 blades on the outer rim gap.

It was photographed by Werneri Tuukkanen the gas station owners uncle.

The inventor was Viljami Kuusto a carpentry teacher from the village of Haukipudas. The Kuustos have a farmhouse in Hailuoto and in Ulkokarvo was this turbine...possibly for several years.

It seems to have been turned into the wind manually. It also features the model-T Ford's rear axle implemented into the system.

[topspeed]

This 1 MW system was never completed.

It resides in Poland. Similar kinda general lay out




https://www.reddit.com/r/windenergy/comments/okok2z/the_j%C3%B3zef_antos_rebielice_kr%C3%B3lewskie_280_blades/

[Adriaan Kragten]

Multi-bladed rotors are only useful if you need a high starting torque coefficient like when you drive a single acting piston pump (see my public report KD 294) or a compressor. Multibladed rotors have a rather low design tip speed ratio and then you loose a lot of power in wake rotation (see figure 4.2 of my public report KD 35). For generation of electricity, you want a high design tip speed ratio because this results in a high rotational speed and a relatively low torque level. This reduces the generator costs. A high design tip speed ratio results in a 3-bladed or 2-bladed rotor.

[topspeed]

Multi-bladed rotors are only useful if you need a high starting torque coefficient like when you drive a single acting piston pump (see my public report KD 294) or a compressor. Multibladed rotors have a rather low design tip speed ratio and then you loose a lot of power in wake rotation (see figure 4.2 of my public report KD 35). For generation of electricity, you want a high design tip speed ratio because this results in a high rotational speed and a relatively low torque level. This reduces the generator costs. A high design tip speed ratio results in a 3-bladed or 2-bladed rotor.

There is very little info besides this photograph available of mr. Kuusto's design.

[topspeed]

Same year 1931 the soviets apparently erected this system in the Crimean peninsula.

WIME D-30.

[MattM]

The picture from Poland looks radio related.

[topspeed]

More about WIME D-30: https://fuergy.com/blog/first-blows-of-energy-independence-wind-power-ii