Posted on 02/01/2022 9:48:44 AM PST by BenLurkin
Mylar? I never worked for companies that rich. We always used Vellum.
“da Vinci didn’t become common until Dan Brown”
I don’t believe that’s true, since I was born long before Dan Brown published his books and people have commonly called him “Leonardo Da Vinci” for my entire life.
All it proves is the old adage that you can make an ironing board fly ... if you put enough horsepower on it.
That's so ridiculous it's silly. I'm more than three times as old as the book Dan Brown stole the idea of from Baigent, Leigh and Lincoln, and he was "da Vinci" in my elementary school books (which were so old they were cuneiform written on clay tablets.
Helicopters have wings, rotary wings. Airfoil-shaped and everything. They’re even of a category of flying machine known as rotary-wing aircraft.
That’s how they make lift. Wings. The lift doesn’t come from blowing down, the lift comes from aerodynamic forces sucking the rotors skyward.
Da Vinci’s design has no lift-generating surfaces. NO LIFT GENERATING SURFACES. All it is is a fan, and a rather poorly-designed one at that.
What this design shows is that Da Vinci didn’t know jack about aerodynamics. He had a fanciful idea about a fan that could blow itself into the sky, but that isn’t how helicopters attain flight, and it’s not even an efficient fan design.
Which is not, strictly speaking, a knock against da Vinci. No one knew anything about aerodynamics until centuries later when they finally started experimenting with it systematically. You simply can’t “intuit” what wind does when flowing across a surface because you can’t see it. No material basis to extrapolate from. The science of aeronautics was developed by men who devised ways to measure the forces they couldn’t see, and measure what influenced those properties, then spent years experimenting with how to create lift on demand and control it.
It would be a stretch to say this design inspired the ceiling fan, much less the helicopter. If you think Igor Sikorsky (or Maitland Bleecker) took inspiration from da Vinci’s design, you’re smoking hippie lettuce.
And A-12/SR-71’s were built with Titanium aquired by a cia dummy company from the Ruskie’s without them finding out till it was too late.
< rant >
Kids these days are USELESS, EXPECTING 6 FIGURES TO START AND JUST PLAIN LAZY !!!
Get yer hands dirty ya spoiled lazy punks !!!
< /rant >
Back in the 1980s, a startup built wind-up Leonardo-inspired fake birds that worked. They had the same problem a lot of such toys had, erratic flight path. The company's pitch was a self-financed sales force demo'ing the product in indoor malls during Xmas season. Would have been a good time to have mall kiosks selling eye patches. ;^) Thanks BenLurkin.
DaVINCI WAS AN ALIEN.......................
:^D Well put. I always hated it when the bald guy in the choir robe struck my knuckles while I was trying to make the impressions in the clay.
Haha! Good one!
‘Face
;o]
The Sumerians invented the first tablet with support for any language. ;^)
You’re too smart for your own good! LOL!
;o]
“Propeller airplanes exhibit diminishing speeds for energy expended starting in the 450mph range.”
Propeller tips go supersonic.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
