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Death Ray I helped build...
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Death Ray I helped build... - September 28, 2010, 06:39 PM

I spent today up in New Hampshire getting this thing running and thought I'd share a few pics. I picked up a side project from a professor I'm working with on something else. It's a giant solar concentrator. This one is a 1/3 scale (in length anyway.. the parabola is full size) model for something that's apparently going to be replicated 8000 times and tossed in the Sahara in North Africa. I did the servos that move the trough to track the sun... The part that moves weighs a few tons. There are two servos per trough, and they're based on .5 hp motors attached to a 120:1 planetary gear reducer then a 60:1ish chain drive.

The protective sheets haven't been taken off of the mirrored surface yet, but it'll still burn you pretty quickly on an overcast day.










'02 SV-650S track bike (for sale, but in Shreveport, LA)
'05 Yamaha TTR-125L
'94 Dodge Viper RT/10
other boring stuff

Last edited by mangle; September 30, 2010 at 05:25 PM..
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poz top looking 4 neg bot
 
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September 28, 2010, 06:48 PM

sorry but this will never takeoff. maybe if you had a treadmill going in the opposite direction, then it would work.


horsepower is how fast you hit the wall, torque is how far you take the wall with you
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September 28, 2010, 07:29 PM

Wow! We could totally hide a real Gatling plasma cannon death ray under that! Good cover!


Marc
CCS Amateur #851
2001 Ducati 850RS
2006 SV650 Racebike
2010 CBR1000RR

...and because sometimes you want to go fast, but need 4 wheels:
2009 Nissan GT-R
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September 28, 2010, 07:33 PM

your mom wants to know why you used all the tin-foil...you just had to make somthing shiny.


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You wanna talk about learning from someone else's mistake. (ATGATT)
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September 28, 2010, 07:38 PM

Quote:
Originally Posted by devon.818
your mom wants to know why you used all the tin-foil...you just had to make somthing shiny.
Ironically, you are pretty close to the mark, mangle is quite easily distracted by building shiny things.

Oh, and since we are on the topic of moms, yours, ben's, and Stillie's says hi!


Marc
CCS Amateur #851
2001 Ducati 850RS
2006 SV650 Racebike
2010 CBR1000RR

...and because sometimes you want to go fast, but need 4 wheels:
2009 Nissan GT-R
2003 Nissan 350Z (for sale, $11k OBO)
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September 28, 2010, 07:51 PM

If I'm guessing where you're going correctly, Spain already has one of these in operation that makes enough power for ~20,000 households.

I heard the pain in the ass is keeping the mirrors clean and free of pits from dust/sand.



Africa, especially equatorial Africa, could really use this technology. I have family in Zimbabwe - and even though they live in the capital city and are fairly well off, they still are beseiged with frequent power outages and brown outs.

Keep us informed on how this goes.

P.S. - why New Hampshire as the test site?



“Any man who tries to be good all the time is bound to come to ruin among the great number who are not good. Hence a Prince who wants to keep his authority must learn how not to be good, and use that knowledge, or refrain from using it, as necessity requires”.

- Nicolo Machiavelli 1469-1527

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September 28, 2010, 07:53 PM

Quote:
Originally Posted by birdman View Post
Ironically, you are pretty close to the mark, mangle is quite easily distracted by building shiny things.

Oh, and since we are on the topic of moms, yours, ben's, and Stillie's says hi!
like any of us AREN'T distracted by large, shiny, dangerous things!


SV650s for SALE!!!
- 2007 SV650 Racebike-Superbike KWS/Thermosman suspension/Swenz bodywork/All GSXR Parts
- 2009 SV650 Streetbike Race blue with white stripe/No wrecks/fully faired with M4 full system

Shoot me a PM or talk to Nate (Nudist) if you're interested in purchase.
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September 28, 2010, 08:36 PM

Quote:
Originally Posted by B

like any of us AREN'T distracted by large, shiny, dangerous things!
Like robocop's junk?


Marc
CCS Amateur #851
2001 Ducati 850RS
2006 SV650 Racebike
2010 CBR1000RR

...and because sometimes you want to go fast, but need 4 wheels:
2009 Nissan GT-R
2003 Nissan 350Z (for sale, $11k OBO)
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September 28, 2010, 09:03 PM

Ooooooo.


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I might have a dirt bike problem.
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September 28, 2010, 09:04 PM

Quote:
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Like robocop's junk?

ghey alert...
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September 28, 2010, 09:05 PM

Quote:
Originally Posted by bluhokie12

ghey alert...
No, robosexual.


Marc
CCS Amateur #851
2001 Ducati 850RS
2006 SV650 Racebike
2010 CBR1000RR

...and because sometimes you want to go fast, but need 4 wheels:
2009 Nissan GT-R
2003 Nissan 350Z (for sale, $11k OBO)
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September 28, 2010, 09:13 PM

Shiny things are awesome.

Heist, this thing is pretty well thought out. The edges are shaped such that they create vortices that can shed sand. The reflector is thin galvanized steel coated with a mylar reflector. The trough is also capable of being turned up far enough to dump things off of it.

Unlike the picture, this thing will use a collector that sits directly over the trough. It's a nifty glass tube with anti-reflection coatings that contains molten salt. The trick with this design is that the collector tube doesn't move, eliminating the need for flex couplings that are the most common points of failure in the current ones.

It's in New Hampshire because the guy we had do the metal work has a shop up there. He's got a pretty neat setup.


'02 SV-650S track bike (for sale, but in Shreveport, LA)
'05 Yamaha TTR-125L
'94 Dodge Viper RT/10
other boring stuff
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September 28, 2010, 09:21 PM

In the event of strong winds, is there anything to keep that system still or is the motor the only part that 'locks it in place'?


-Ryan
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September 28, 2010, 09:25 PM

The motors have integrated brakes. They're actuated by solenoids that are wired in series with the motor windings. When power is applied to the motor, the brake releases. Either of the two brakes is more than enough to hold the trough at 90 degrees.


'02 SV-650S track bike (for sale, but in Shreveport, LA)
'05 Yamaha TTR-125L
'94 Dodge Viper RT/10
other boring stuff
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September 28, 2010, 09:43 PM

Awesome! Looks great!


-Ryan
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