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How wind turbine power depends on blade length: looking at real data

недавно
Wind turbines keep getting bigger every year. There's one main reason for that: the longer the blades, the more powerful the turbine. But couldn't you just install two smaller turbines instead of one large one? To answer this, let's take a look at real-world data.

Goldwind is a Chinese wind turbine manufacturer. Here are photos of their operating turbines from the company website:
Goldwind GW 82 / 1500 - output: 1500 kW (1.5 MW). Rotor length: 82.3 meters, meaning a blade diameter of roughly 41.15 meters.

Goldwind GW 171 / 6000 - output: 6000 kW (6.0 MW). Rotor length: 171 meters, giving a blade diameter of about 85.5 meters.

Even here you can already see that the relationship between blade length and output is nonlinear. The second turbine's blade is 2.07x longer, but the power is 4x higher!

Vestas is a wind turbine manufacturer from Denmark (their turbines are shown in the next photo):
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Some recent changes on Famabara

недавно
You can now insert previously uploaded images and videos into posts and comments by selecting them from a list.

If, while editing a post, a user accidentally deletes a content block, it can now be restored using a button in the notification in the corner of the screen.

New types of complaints have been added: content created by a AI and copyright infringement.

The project rules have been updated.

A small profanity check is now performed when saving a post or comment.
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Latest changes on Famabara

недавно
Fixed a bug with displaying the number of unread comments.

Improved error display when mobile internet connection is lost.

Added a sticky loader when saving a comment.

Improved aria-attributes for screen readers.

Added Open Graph support for some pages.

When publishing a post, a like is automatically added to the published post.

In open posts, a button icon was added to quickly jump to comments.

Separate language-specific home pages were created on sub-URLs like /es, /de, etc.

The site header is now fixed at the top on most pages.
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Selfish tourists hog loungers with towels and don’t use them

недавно
I'm staying with my family at a five-star all-inclusive in Belek - not a cheap place. Around 8 or 9 in the morning we head straight to the sea for a swim, skipping the pool. By that time, the poolside loungers already look like this:
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An argument against moon landing conspiracy theorists

недавно
I have a friend who believes in the moon landing conspiracy - you know, one of those people who think the Americans never actually went to the Moon.

He's convinced the whole thing was staged, masterfully filmed by movie directors. Arguing with him is almost pointless - he says every photo is fake. The fact that even Soviet scientists never questioned the authenticity of the American Moon landing doesn't matter to him.

But there's one argument that made him stop and think. No, I didn't manage to change his mind, but at least I got him to shut up for a while - confused him, so to speak.

The argument went like this: "So what, they faked all their Moon landings?"
Funny thing is, he didn't even know that the Americans went to the Moon not once, but several times.

Here's the list of all Moon missions:
Apollo 11 - July 16, 1969
Apollo 12 - November 14, 1969
Apollo 14 - January 31, 1971
Apollo 15 - July 26, 1971
Apollo 16 - April 16, 1972
Apollo 17 - December 7, 1972

So according to the "logic" of Moon landing deniers, the Americans didn't fake it just once - they supposedly faked it six times, along with all the photos, videos, and even the Moon rocks they brought back.
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