h a l f b a k e r yThe word "How?" springs to mind at this point.
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A linear high pressure air outlet running along the
bottom
of
the windshield would create a curtain of air that would
blow
raindrops away from the glass before they even had a
chance
to
land.
Regular wipers would be available for mud and such.
I'm thinking watching the rain change
direction and fly
away from the windshield as if hitting a force field
would be a neat effect. Great for keeping bugs from
hitting the windshield too, better than wipers that just
smear the mess around.
Mazda Baked
http://www.goauto.c...9C0CA25760A000139D8
[PainOCommonSense, Jun 12 2012]
McMerc SLR Baked
http://www.topgear....3-03-2009?imageNo=6
[PainOCommonSense, Jun 12 2012]
Lamborghini Baked
http://www.dailymai...car-windscreen.html
[PainOCommonSense, Jun 12 2012]
Not my idea
http://www.emercede...cipede_Of_1894.html
[doctorremulac3, Jun 12 2012]
Bunya Nuts
http://en.wikipedia..._bidwillii_cone.jpg
Up to 12kg each. Serious impediment to survival if one hits your car while you're driving. [UnaBubba, Jun 13 2012]
NASA studied it for aircraft
http://ntrs.nasa.go...8716_1981068716.pdf
"Preliminary data on rain deflection from aircraft windshields by means of high-velocity jet-air blast" [cajunfj40, Jun 27 2012]
Did I say 5 fighters for the price of one?
http://en.wikipedia..._aircraft_1950–1959
Try more than 20. [doctorremulac3, Jun 27 2012]
[link]
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Then you don't need the windshield. Just use the air stream. Half-Baked in a brilliant anno to: Ultrasonic Windshield "Wiper." [acurafan07] |
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Or design the car the other way up, so that the
windscreen is shielded from the rain. |
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This would be loads of fun to watch in a snow storm! [+] |
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[squeaketh] I'm pretty sure it was agreed upon
that you would still need the windshield (solid
objects that would
penetrate the airstream and, subsequently, the
occupants). |
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Cool idea nonetheless [+] |
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[acurafan07], We discussed. You agreed. Still, because [doctorremulac3]'s version combines the best of both worlds, [+]. |
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..with the addition of a 30 kv coil, one piece of thin wire (bottom of the windscreen), one wooden pole covered in foil (top of the windscreen, you should be able to make an ion wind and finally use some of that lifter technology for something useful. |
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Just got back from a 8 hour long round-trip drive
to visit some relatives over the weekend and the
windshield is
covered with bugs. To say the windshield wipers
smear
them around would be an exaggeration. They just
turn all these little dots on the windshields into
commas. This would have been nice to have. |
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Although the car would have to be designed from
the ground up to accommodate it, a system that
enveloped the entire car would be pretty snazzy.
Driving through the rain with a completely dry car
that looked like it had a force field around it
could be really cool. |
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// a completely dry car that looked like it had a force field around it // |
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We can help you ... join us ... don't be afraid ... |
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Came here to post whole car windshield wiper. Saw this post. Then saw the above comment. Halfbakery is a remarkably grounding force in my life. |
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Its good to be grounded in your life, what with all those 30 kv ions flying around. |
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// To say the windshield wipers smear them around would be an exaggeration. They just turn all these little dots on the windshields into commas.// |
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You've obviously never driven through a swarm of mayflies, locusts, or lovebugs. |
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Or junebugs. They don't gather in groups very often, but
when they do it's like a hailstorm with tapioca filling. |
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Admittedly they are not exactly as described, but Windscreenless cars have been around a while. |
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I'm not seeing anything about wiper-less dry
windshields in the links. These are cars without
windshields as opposed to cars with windshields and
a sheet of air blowing over them to push rain and
bugs away. So pretty much the polar opposite of my
idea, these are cars that blast insects and rain
directly into
your
face at 150 miles an hour. Am I missing something? |
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I once drove a Lotus Elise on the motorway during a snowfall and none of it hit the windscreen. It was very cool but also a bit disorienting. |
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Was it just from the "shockwave" of the car? I guess maybe you can get the general effect of this idea if you're driving fast enough with the right car design. |
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But never had the pleasure of driving a Lotus Elise in a snow storm sad to say. |
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//Am I missing something?// |
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Nope, seems PainOCommonSense may be though. |
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I understood perfectly that this was about cars with
windshields. It's
in the first sentence of the post. |
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On cars w/o windshields: I sometimes drive my M35 with
the roof off and the windshield folded down, usually when
I'm carrying something like a steel I-beam that's too long to
fit in the bed. These occasions make me wonder about the
HB posts involving windscreen-less cars. Ski goggles and a
bandanna covering my nose and mouth help, but I still get
hit with all kinds of crap. |
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Same with riding a motorcycle; even if it weren't a
personal choice for the safety factor, I'd still wear a full-
visor helmet because of all the little pebbles and other
detritus tossed up by the tires of other vehicles. A laminar
air-sheet might deflect rain, snow, and smaller bugs, but
unless you've ever ridden a motorcycle, you might be
surprised how much heavier shit is flying through the air
when you're in traffic. And that's not even accounting for
the potentially deadly things that could hit you in the
face, like chunks of re-tread, stuff falling off of trucks, or
forgotten coffee mugs. Last year a motorcyclist in New
Hampshire was killed by a hard-bound college textbook
that was left on the roof of a car. The book flew off when
the car got onto the interstate, hitting the helmetless
biker in the head at 60 mph. |
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So why, indeed, are we talking about cars with no
windshields? |
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Beats me. A car without a windshield would be a horrible thing. Among other reasons, if you had this compressed air curtain blowing in front of you without a very well soundproofed glass and insulated steel compartment wrapped around you it would sound like you're standing behind a turbojet engine torking up. |
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For bystanders, you'd sound like a jet going by which could add to the effect I suppose. |
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[doctorremulac3] The Elise has large vents in the bonnet to expel the air that goes through the radiator. I'd assumed that was widely known so I didn't explicitly point out that it's very similar to this idea but for a completely different reason. |
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Does it keep rain off the windshield, even when the
car is stopped at an intersection? |
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No, but an Elise is very small. You can keep one dry
just by tossing a hat over it. |
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Like the old Esprits better myself. Smooth lines,
James Bond drove one with machine guns that went
under water. Just a cooler car. |
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But I'd gladly take an Elise if offered one. |
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// unless you've ever ridden a motorcycle,
you might be surprised how much heavier
shit is flying through the air when you're in
traffic. // |
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Horse chestnuts. Big as a walnut shell, hard
and heavy. One of those hitting a helmet at
50km/h is damned loud… one in the face at
100 km/h without a visor and you're looking
at sight loss. |
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Autumn can be a bad time for two-wheeled
travel- drifts of damp leaves, patches of fog,
and an erratic bombardment of acorns
and other such arboreal projectiles. |
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//Bunya nuts// And bun yours too. |
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Thanks for that link, UnaBunya! :)
[Sorry, couldn't help myself] |
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Thanks for that link, UnaBunya! :)
[Sorry, couldn't help myself] |
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See linky. NASA (or, more properly, one of their progenitors NACA) studied it for jet fighters at 135/175mph. "The results indicate that rain deflection by jet blast appears feasible ..." |
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More over at the later idea "Air-barrier Convertible Roof" by acurafan07 |
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Wow, thank you for the cool link Caj. |
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I'm blown away by how clearly this thing is written
and explained. No bs, no pedantry, no charts and
graphs where they aren't needed, just explains
the situation clearly with the minimum verbiage
necessary. I think that's the way people did things
in the
1950s, they just got the job done. That's why for
the cost to design and produce one supersonic
fighter plane now, back then we'd
get 5 with a couple of bombers thrown in. |
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Wasn't around but wish I had been. The 1950s gave
us supersonic fighters, spaceflight and rock and
roll. Though minorities were mistreated, it was
also the era of the birth of the civil rights
movement in America. Everybody had a house, a
car and a TV with dumb shows that all had positive
messages. I was born 20 years too late. Damn
shame. |
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