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(Washington Post)   Sensing the need for optimism, an American carmaker is going to build a car that actually runs on sunshine and rainbows   (washingtonpost.com) divider line
    More: Giggity, Electric vehicle, Solar cell, Solar vehicle, Photovoltaics, Photovoltaic array, Aptera Motors, Photovoltaic module, solar cells  
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682 clicks; posted to STEM » on 26 Feb 2021 at 12:53 AM (7 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



25 Comments     (+0 »)
View Voting Results: Smartest and Funniest
 
2021-02-25 8:30:01 PM  
For $25,000 I would consider it. They would have to tweak the design, that look of a shoe with weird side boobies on the toe box wouldn't sell at my house ...and four wheels. I don't even want to think about the drama that a missing rear wheel would provoke.
 
2021-02-25 8:41:27 PM  
How's that thing handle getting rear ended by Cletus in his roling coal dually?
 
2021-02-25 9:42:44 PM  
Really Big Shoe, Really Big...
Youtube 9cB-yzhYf_c
 
2021-02-25 10:43:22 PM  
Every coin has a flipside. It also must be constantly fed Kermit-the-frog carcasses
 
2021-02-26 1:14:29 AM  
I'm almost ready to begin my clever three part plan.

1> Capture all Unicorns.
2> Harness their farts.
3> Build cars that run on Unicorn farts.
 
2021-02-26 1:23:50 AM  

Nonrepeating Rotating Binary: I'm almost ready to begin my clever three part plan.

1> Capture all Unicorns.
2> Harness their farts.
3> Build cars that run on Unicorn farts.


I sure am curious to know what emissions are released from unicorn-fart engines.
 
2021-02-26 1:33:09 AM  

Tom Marvolo Bombadil: Nonrepeating Rotating Binary: I'm almost ready to begin my clever three part plan.

1> Capture all Unicorns.
2> Harness their farts.
3> Build cars that run on Unicorn farts.

I sure am curious to know what emissions are released from unicorn-fart engines.


Fark user imageView Full Size
 
2021-02-26 3:03:46 AM  
Fark user imageView Full Size
 
2021-02-26 3:20:35 AM  
Sounds like an absolute crock of shiat, and the article doesn't have any real numbers.

The World Solar Challenge rolls vehicles that look like this, and have bicycle wheels.

lh3.googleusercontent.comView Full Size


If the cabin looks like anything more than cardboard, it will never do what they claim.

From the numbers I can get:
It's a three-wheel, ultra-aerodynamic electric vehicle covered in 34 square feet of solar cells. The car is so efficient that, on a clear day, those cells alone could provide enough energy to drive about 40 miles - more than twice the distance of the average American's commute.

Ignoring the weird ass statement that somehow the cells get less efficient after 40 minutes, we'll pretend they mean the solar cells plus battery.

1kW per m2 of sunlight. At 23% efficiency. 230W per m2.
34sqft = 3.16m2

So a maximum output of 727W from those cells in perfect conditions.

At least 90 percent of the power produced by the Aptera's solar panels goes toward making the vehicle move, the company says.

Giving a whopping 650W to make the vehicle move.

Its creators say the car is 13 times more efficient than a gas-powered pickup truck and four times more efficient than the average electric vehicle.

But an average electric car would need a solar panel "the size of a semi truck" to go farther than a few miles,
Fambro said. Meanwhile, a relatively small number of solar cells can propel the Aptera.


Wouldn't the average electric car just need a solar panel 4x larger? Although I don't think 2.6KW of solar panels would cut it.
 
2021-02-26 3:25:03 AM  
Ugh, I just found their website and realised I've seen this before and what an absolute crock of shiat it was then.

https://www.aptera.us/

You know a tech product is absolute trash when they won't give ANY technical details about it.

They even have a tech section but it doesn't have any tech. Just promises.
 
2021-02-26 3:31:04 AM  
AHAHAHAHA HOLY shiat THEY'VE PROMISED A 100kWh battery.

https://www.aptera.us/forum/aptera-te​c​h-questions/all-of-your-questions-answ​ered

Why a 100 kwh battery? Does such a large battery add weight.
The battery technology Aptera has is unique in that it's probably one of the lightest weight and lowest profile packs that are in existence.

Do the different battery strengths results in different weights for the vehicle? How heavy are each of the battery sizes? Which battery pack is the quickest? Smallest because of weight, or do larger packs give more power? Excluding max range, what is the ideal battery size for maximizing efficiency and performance?
We will not know this firmly until we have a supply agreement for cells. But, in general, the cell tech we are testing add about 10 lbs per kWh of energy. This means the 100 kWh pack is about 1,000lbs and the 60kWh pack is roughly 600lbs.

And they're delivering this year, apparently!
 
2021-02-26 5:55:37 AM  

dyhchong: Sounds like an absolute crock of shiat, and the article doesn't have any real numbers.

The World Solar Challenge rolls vehicles that look like this, and have bicycle wheels.

[lh3.googleusercontent.com image 512x341]

If the cabin looks like anything more than cardboard, it will never do what they claim.

From the numbers I can get:
It's a three-wheel, ultra-aerodynamic electric vehicle covered in 34 square feet of solar cells. The car is so efficient that, on a clear day, those cells alone could provide enough energy to drive about 40 miles - more than twice the distance of the average American's commute.

Ignoring the weird ass statement that somehow the cells get less efficient after 40 minutes, we'll pretend they mean the solar cells plus battery.

1kW per m2 of sunlight. At 23% efficiency. 230W per m2.
34sqft = 3.16m2

So a maximum output of 727W from those cells in perfect conditions.

At least 90 percent of the power produced by the Aptera's solar panels goes toward making the vehicle move, the company says.

Giving a whopping 650W to make the vehicle move.

Its creators say the car is 13 times more efficient than a gas-powered pickup truck and four times more efficient than the average electric vehicle.

But an average electric car would need a solar panel "the size of a semi truck" to go farther than a few miles, Fambro said. Meanwhile, a relatively small number of solar cells can propel the Aptera.

Wouldn't the average electric car just need a solar panel 4x larger? Although I don't think 2.6KW of solar panels would cut it.


I thought solar panels were about 150 watts per sq meter not 230.
 
2021-02-26 6:07:21 AM  
Specs a bit fishy, but I like it. I like it a lot.

...Until a big fat American mom hauling her big fat American kids in a big fat American SUV kills the fark out of you because she's texting while driving
 
2021-02-26 6:23:36 AM  
I like the idea of having a fusion powered (if indirectly) car in the future, but if it doesn't fly it's not quite the same.
 
2021-02-26 7:00:48 AM  
The first mass-produced solar-powered
cars are slated to roll off the assembly
line this year.


It's been over a decade now since I first heard about this car, so I'll believe it when I see it.
 
2021-02-26 7:03:16 AM  

Likwit: Specs a bit fishy, but I like it. I like it a lot.

...Until a big fat American mom hauling her big fat American kids in a big fat American SUV kills the fark out of you because she's texting while driving


Car that flimsy, you'd need to worry about nerds Morsing while driving in their subcompact commuter car.
 
2021-02-26 7:15:32 AM  
One issue not mentioned in TFA is one I can see out my window: Snow.

This thing looks like a nightmare to drive in the snow, but aside from that, how fragile are those solar panels going to be?  When you have to clear snow and especially ice off, you could damage them if you aren't careful, even setting aside that it will prevent light from reaching the cells.

Also, I recall seeing something about efficiently cooling it, but not heating it.  It hits below zero several times a year here.  Below zero Fahrvergnugen, not Pantygrade.
 
2021-02-26 7:21:11 AM  

Peach_Fuz: Tom Marvolo Bombadil: Nonrepeating Rotating Binary: I'm almost ready to begin my clever three part plan.

1> Capture all Unicorns.
2> Harness their farts.
3> Build cars that run on Unicorn farts.

I sure am curious to know what emissions are released from unicorn-fart engines.

[Fark user image image 425x238]


derpicdn.netView Full Size


Everyone knows unicorn horns can only play rave music.
 
2021-02-26 9:03:43 AM  
Reading through the wiki on the company it sounds like they're trying to build a car that runs on crowdfunding
 
2021-02-26 10:35:33 AM  

Tom Marvolo Bombadil: Nonrepeating Rotating Binary: I'm almost ready to begin my clever three part plan.

1> Capture all Unicorns.
2> Harness their farts.
3> Build cars that run on Unicorn farts.

I sure am curious to know what emissions are released from unicorn-fart engines.


Unicorn farts are made up of piranha solution (H2SO5)
 
2021-02-26 1:10:16 PM  
I'm down for a second gen, maybe even a first gen if they can deliver a solid product. Looks like an awesome city cruiser with enough capacity for frequent vacations off of nothing but solar.
 
2021-02-26 2:38:59 PM  

MindStalker: I thought solar panels were about 150 watts per sq meter not 230.


Depends on tech, assuming 1KW/m2 of energy from the sun (which is a best case scenario in a sunny locale), then you just multiply it by its efficiency.

15% efficiency is a good value for solar panels from 15 years ago.

23% is common now.

So it's probably a combination of both to get 150W, say 18% efficiency but maybe your area only gets 833W/m2 of energy from the sun because you don't live in the desert.
 
2021-02-26 2:39:46 PM  
I intentionally used best case scenarios for maths because if they look bad in a best case scenario, then reality is way out the window.
 
2021-02-26 2:57:12 PM  

MindStalker: I thought solar panels were about 150 watts per sq meter not 230.


It depends.  Different types of cells, different manufacturers, and different panel layouts all make a difference.  But 23% panels (about 230W per square meter) are commercially available.

The less efficient panels are often cheaper per watt, but take up more room.  If you have space, they make sense.  The most efficient panels are usually more expensive per watt, but are what you'd use if you were trying to make the most of limited area.
 
2021-02-26 3:00:05 PM  

dittybopper: Likwit: Specs a bit fishy, but I like it. I like it a lot.

...Until a big fat American mom hauling her big fat American kids in a big fat American SUV kills the fark out of you because she's texting while driving

Car that flimsy, you'd need to worry about nerds Morsing while driving in their subcompact commuter car.


With the increasingly common handsfree-only laws, do you just make dot-dash sound effects into a microphone?
 
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