http://www.theregister.co.uk/2013/07/12/aerovelo_wins_sikorsky_human_powered_helicopter_prize/
Pretty amazing craft.
By: Lincoln 7 - 17th July 2013 at 09:59
What man is his equal today?.
Jim.
Lincoln .7
By: Richard gray - 16th July 2013 at 22:37
Leonardo da Vinci may have been a genius…
…but I can spot a slight flaw in his design for the drive of this ‘tank’…..can you?
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There is no flaw. What you can’t see is the locking device for the drive shafts.
The two men operating the drive would be standing back to back pushing the drive shafts round. The drive shaft would not be locked on the front wheels, so tank would move forward.
To select reverse the men would remove locking pin from rear wheels and place in front wheels.
then turn handle again and tank would go backwards.
That way. the men would not have to change positions to drive the tank backwards. as when turning a crank as shown it is always easier to crank forwards then it is backward if you see what I mean.
By: 1batfastard - 16th July 2013 at 22:04
Taking off in a human-powered helicopter must be extremely hard work.
Have you seen the guy on the bike he looks about knackered as not only does he have to keep cycling he has to manage up/down/left /right movements as at a couple of points it looks hard to maintain stability judging by his lean angle on the bike .
Geoff.:D
By: Arabella-Cox - 16th July 2013 at 20:35
Taking off in a human-powered helicopter must be extremely hard work.
By: KERVYN - 14th July 2013 at 20:48
AS CONCLUSION ??
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good evening,
Etienne
By: KERVYN - 14th July 2013 at 20:14
More about ‘him’….
see the § ‘technical errors’ in ; http://www.netplaces.com/leonardo-da-vinci/leonardo-the-odd-genius/minor-errors-of-a-major-genius.htm
& the 2 possible explanations…!!!
idem, Etienne
By: KERVYN - 14th July 2013 at 19:58
YES, a serious error, in fact…
………………..IF build so… 2 wheels rotate in the opposite sense of the 2 other ones … so it’s impossible to get this on move !!
in fact, I’ve seen a ‘partly’ model of this ‘tank’ in the exhibition ;http://visitbrussels.be/bitc/BE_en/culture/56159/da-vinci-the-genius.do
……………………………………………………….>>> a ‘genius’ ??:confused:
friendly, Etienne
By: Creaking Door - 14th July 2013 at 14:49
Leonardo da Vinci may have been a genius…
…but I can spot a slight flaw in his design for the drive of this ‘tank’…..can you?
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By: KERVYN - 12th July 2013 at 21:32
DA VINCI…. my POV…
… had many ‘technical’ ideas, but was unable to realize most of his ‘projects’….
Was he really a genious ? 😀 …… That was my conclusion after visiting -this week in Brussels- a ‘fantastic’ exhibition about his ‘wild imaginings’…
so, I agree with wikipedia ;
Leonardo is revered[2] for his technological ingenuity. He conceptualised a helicopter, a tank, concentrated solar power, a calculator,[6] and the double hull, and he outlined a rudimentary theory of plate tectonics. Relatively few of his designs were constructed or were even feasible during his lifetime,[nb 3] but some of his smaller inventions, such as an automated bobbin winder and a machine for testing the tensile strength of wire, entered the world of manufacturing unheralded.[nb 4] He made important discoveries in anatomy, civil engineering, optics, and hydrodynamics, but he did not publish his findings and they had no direct influence on later science.[7]
friendly, Etienne
By: trumper - 12th July 2013 at 17:22
Makes the edwardians look sturdy 🙂 Da Vinci was a brilliant man.
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July 12, 2013 at 12:15 pm