Linux gamer, retired aviator, profanity enthusiast

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Joined 2 years ago
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Cake day: June 20th, 2023

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  • You want to make a midplane, a reference plane midway between to parallel planes. You click the Datum Plane button, and then the two parallel planes, and you get a plane that is perpendicular to both, not parallel halftway between. I found it easier to forget how to need midplanes than to get FreeCAD to make one.

    There’s some cool concepts in there, I make heavy use of the spreadsheet function, but I swear to every god in every pantheon that Autodesk is paying the FreeCAD development community to keep their UX at least this horrible to preserve their business model. I can’t explain this level of incompetence any other way without relying on rock chewing stupidity.




  • From an old edition of the Pilot’s Handbook of Aeronautical Knowledge:

    An airplane’s tire will hydroplane at a speed in knots equal to 9 times the square root of the tire pressure in PSI. So if your tires are inflated to 36 PSI, sq.rt 36 = 6 * 9 = 54 knots. If there is standing water on the runway, you will have no braking authority or steering control from the wheels, you will have to maintain control of the aircraft with the flight controls, and you cannot rely on short field stopping figures from the POH if it requires applying brakes above 54 knots.

    I got that out of the 2003 edition; I don’t know if it’s in the current issue.








  • I could see having lights on a somewhat sophisticated timer. Like having bedroom lighting that simulates dawn, fades on etc. Maybe making a thermostat a little bit more sophisticated. I’d like to live in a world where I could trust the power company to tell me when electricity is abundant and scarce but we’re gonna have to win Civil War 2 before we get that. My toilet and faucets do not need any digital technology at all.