adamfp's comments

On: A Fundamental Principle of Aeronautical Engineering Has Been Overturned

[adamfp]

Australian company Mako has been applying ribbed micro-surfaces to aeroplanes for a few years now, with extremely promising results.

They talk about reducing skin friction drag but due to the translation I'm not sure if that's what this article is referring to as well.

[VerifiedReports → adamfp]

If this is the previously-discussed one, the difference here is that it's not ribbing so it's not directional.

On: Heat your house with a mechanical windmill (2019)

[adamfp]

Tech: evacuated solar tubes Brand: Apricus

I heavily vouch for them - the tech is so effective we cover them with a shadecloth in high Summer because the water gets too hot (Off-Grid property in Central West NSW, Australia).

Ours have lasted over 10 yrs without maintenance.

One downside is that they're not ubiquitous so some plumbers may not want to work with them.

They're so good I'm surprised I don't see them everywhere.