Part ownership of a Ripple Wind Turbine, fancy it?

[Joeboy]

On the open day I stood under directly under the rotor, I tell you its not for the faint hearted.

I read a nice wee article that said they can top 100mph at tip.

Note blade angle has increased as has apparent wind speed. Throttled to remain in spec? Which would then lead me onto 'oh go on then, let wrong rip' which is one reason why I'm not in Vensys control room.

Away out for dinner, anything after this point is beer.

[nowty]

Note blade angle has increased as has apparent wind speed. Throttled to remain in spec? Which would then lead me onto 'oh go on then, let wrong rip' which is one reason why I'm not in Vensys control room.

What could possibly go wrong.

[nowty]

Are we hitting the sweet spot ?

Capacity factor about 98%, RPM full rated speed with quite high blade angle.

(My share is 3kW).

[Adokforme]

Nice one Nowty, reckon we're about half your generation, circa 1.53kW.
Just picking up on Joeboys comment about tip speed, not sure if my maths are anywhere near correct but with a 100 metre diameter at the revs stated seems to work out around 170 mph!
They would take some catching. Or should that be kerching!

[Joeboy]

Back from the pub and I am counting 3 tick tick as opposed to four earlier today. The graphic seems to more represent reality than the various windspeed and even rpm figures below on the app.

Although they do seem to have backed off the blade angle to allow it to nip on.

[AE-NMidlands]

Can someone explain (in simple terms please) the significance of blade angle?
I could be very wrong, but I'm guessing it's all relative to windspeed so about zero means full exploitation, and bigger blade angles in higher winds are "spilling the wind" - in a sailing ship analogy - to avoid over-driving the generator?

[Joeboy]

Can someone explain (in simple terms please) the significance of blade angle?
I could be very wrong, but I'm guessing it's all relative to windspeed so about zero means full exploitation, and bigger blade angles in higher winds are "spilling the wind" - in a sailing ship analogy - to avoid over-driving the generator?

Higher blade angle more drag. Slows it down. Think plane flaps.

[AE-NMidlands]

Can someone explain (in simple terms please) the significance of blade angle?
I could be very wrong, but I'm guessing it's all relative to windspeed so about zero means full exploitation, and bigger blade angles in higher winds are "spilling the wind" - in a sailing ship analogy - to avoid over-driving the generator?

Higher blade angle more drag. Slows it down. Think plane flaps.

... so deliberately not generating as much as it could, i.e. as much as the wind through the swept area "contains"? To not over-drive the generator and downstream electrical stuff?

[nowty]

Just picking up on Joeboys comment about tip speed, not sure if my maths are anywhere near correct but with a 100 metre diameter at the revs stated seems to work out around 170 mph!
They would take some catching. Or should that be kerching!

I make it about that too. I also worked out what their 5.8MW version is and its a similar tip speed, larger circumference but slower RPM.

I then tried to work out the speed of some of the offshore monster's from various manufactures but the RPM speed is not published.

[nowty]

Now its gone midnight I was just looking at the scores on the doors with GF and 2 strong wind days to go before the end of the month.

After surpassing Feb 23's total I though that was it, no chance of beating any higher ones, but I now think Dec 22's is going to go and its touch and go whether Oct 22 will go too.