The Car Fueled Entirely by the Sun Takes Huge Step Towards Production

credit – Aptera, via X

One of the most hotly anticipated concept cars in recent history, the Aptera solar-powered car took a large step towards reality recently as the first-ever production-grade body arrived at the company’s headquarters in San Diego.

This three-wheeler is advertised as containing 34 square feet of solar paneling that actually powers the car as it drives or while it’s parked, but so many aspects are completely new in a commercial automobile designed for mass production that extra precautions and preparations are needed before it can hit the road.

“We had so much fun last week celebrating a company milestone—the arrival of Aptera’s first production body in San Diego,” the company wrote in a post on X. “Now Team Aptera is back to work finalizing the cable routing, connectors, and placement of components in preparation for our first [production-intent] builds.”

According to Elektrek, the company has ordered all the parts for its production-intent battery packs, and other non-structural components are currently being “validated” in Italy by the company’s supply partner.

The suspension, safety equipment, and drivetrain are yet to be finalized for production models. Still, the company has gone further than many before them, because the design they are currently finalizing is not meant to be an eye-raiser or science project, like some GNN has reported on.

When the PI-2 Aptera solar trike is finally ready, it will be because the company is producing 10,000 a year.

Despite looking as dramatic as any Pagani or Lamborghini, the Aptera’s tapered backside, aerodynamic body, and arched, dolphin-like undercarriage are all designed to reduce drag.

In fact, the detail paid to the reduction of drag and energy use borders on obsessive. But it’s through this ultra-efficiency that solar power, a relatively limited form of electricity generation, can actually become a useful feature for powering a car.

“We think energy should be used to turn your wheels—that starts with aerodynamics,” says Co-CEO Chris Anthony, in a video released by the company in 2021 announcing it was taking preorders.

“In a typical vehicle you use 60% of your fuel just pushing the air out of the way at highway speeds; so if you could take that aerodynamic drag down to 0, you’d instantly get 60% better fuel economy.

“Instead of having 200-300 parts to the body, [the Aptera] have four parts to the main structure, and that makes it much easier to build, track, and assemble,” says Steve Fambro, the second co-founder of the company, in the same video.

The company says the Aptera’s solar panels will deliver 40 miles of range from charging per sunny day, but the car can be plugged in like any other EV. Aptera also maintains that its vehicle will have 1,000 miles of range because of this perfect aerodynamism, low-weight, and efficient drivetrain. Source: https://www.goodnewsnetwork.org/the-car-fueled-entirely-by-the-sun-takes-huge-step-towards-production/

Read More........→April 20, 2024

In World First, Scientists Share What Was Almost Certainly a Conversation with a Humpback Whale

Photo by Christopher Michel, CC license

In a world first, marine biologists were able to have a discourse with a humpback whale, pushing out the boundaries of cooperation and understanding that could be possible between our two species.

An adult female humpback whale, known as Twain, in Southeast Alaska, was located along with a group of whales and called with a recording of another humpback’s “whup/throp” call.

The recording was made by whales of the same group the day before, but the team didn’t know if the calls recorded were made by the same whale or were part of an exchange between two or more whales. To find out, the researchers conducted the trial on two days, with the first to find out if the whup calls they had recorded would be socially acceptable.

It turned out that whatever the whale(s) had been saying the day before was appropriate as far as Twain was concerned, and after the team broadcast the playback, she drifted away from her group and participated both physically and acoustically in three phases of interaction with the crew and their boat including periods of engagement, agitation, and disengagement.

First she called back, then she circled the boat three times, surfaced, and dived again. After this interaction, she gradually left.

Twain’s whup calls on day 2 and the whup calls recorded on day 1 were acoustically analyzed for both spectral and temporal features, specifically the inter-call interval, or latency between calls as measured by the time difference between the preceding call’s offset and the subsequent call’s onset.

The scientists determined that this metric would be able to determine both arousal and valence, thereby allowing them to get some idea of the emotional content of the exchange. The results indicated that substantial variation was found among the latencies in Twain’s calling behavior, which they took to mean excitement or arousal.

“After playing the contact call three times, we got this huge response,” said Brenda McCowan told the BBC. “Then, to keep the animal engaged, I started trying to match the latency of her calls to our calls. So, if she waited 10 seconds, I waited 10 seconds. We ended up matching each other. We did this 36 times over a 20-minute period.”

Twain’s calls were significantly shorter during engagement than either during the period defined as agitation, when she was circling the boat ejecting air through her blowhole, or as she was leaving.

The BBC reports that the songs of the humpback whale are thought to be among the most complex in the animal kingdom.A strong point of the whole experiment was that the results were determined with a degree of blinding—via independent, uninformed observers reporting on surface behavior and respiratory activity of the interacting whale.In World First, Scientists Share What Was Almost Certainly a Conversation with a Humpback Whale

Read More........→April 16, 2024