I suppose the Piaggio Ape (pronounced A as in Awe, P as in Paul, E as in Eight) would be one of the most successful 3-wheelers. Likely there is a whole class of utilitarian 3-wheelers. Cushman made a few. Does India make their own homebrew trikes?
It's not an outright fiction, but that doesn't make it a legitimate business. A lot of people can make a lot of money from an exercise in collecting investor funds and spending them without any real intention to produce a vehicle. Startups go under, but I don't think many of the people involved in them come out broke after collecting salaries and selling products and services to those startups. The difference between a legitimate business at the startup phase and a scam can be hard to see from outside.Well, come now, it's not a scam. It might be an unwise business decision, but they're clearly actually designing and building these things.
I agree.That said, while I'd be a bit defensive towards someone being endlessly shat on for their own build, no one here is from Aptera and, it's a company that doesn't have a great track record. Criticism is part of commentary, this isn't kindergarten. It's a fair discussion to have.
The Aptera is the most INEFFICIENT vehicleThis push for vehicle efficiency shouldn't be entirely forgotten.
The Teslas get somewhere around 4 miles per kWh.The Aptera is the most INEFFICIENT vehicle
It is a two seater that uses just a little less energy than a 5 seater
The Aptera does get 2.5 times as far per kWhThe Teslas get somewhere around 4 miles per kWh.
The Aptera gets around 10 miles per kWh.
So, about 2.5x more distance per kWh.
A car capable of carrying 4 people only can count on that efficiency if it is actually full of the driver + 3 passengers. However, a lot of driving in the USA is just a single driver and no passengers. A "High Occupancy Vehicle" is generally defined as the driver plus a single passenger.
Aptera seems to think the car can make up a significant amount of range simply parking the built in solar panel in the sun.
The vehicle really depends on one's needs. A commuter to work, and it'll be just fine.
Family car, and it may be pushing it a bit. I would think they could add tiedowns for infant and toddler seats in the back, but apparently it hasn't been done.
Do you have a link for the data?The Aptera does get 2.5 times as far per kWh
AT A MUCH MUCH LOWER SPEED
At the same speed its more like 30% more
I'll have to remember that one. Car won't work due to bug guts on the windshield.If it loses its laminar flow due to bug guts like laminar flow aircraft wings do
No Aptera is NOT making a sensible design for low drag!!!I'll have to remember that one. Car won't work due to bug guts on the windshield.
Wind resistance isn't something that should be ignored, and every manufacture is taking steps to reduce it. Even big truck manufacturers. Aptera has taken a unique approach to reducing wind resistance. Not all the choices I would have made, but they have some solid ideas.
Ok, drag calculation:No Aptera is NOT making a sensible design for low drag!!!
Aptera has made something that looks like a low drag machine to somebody that knows a little about aerodynamics
I was at that level of knowledge before I ended up helping a local High School with its Solar Racer (we won twice)
At that point I did a bit of study about the subject
The key thing to remember is that IF you can make an actual "streamlined" object where the streamlines join up again THEN the frontal area becomes irrelevant - at that point drag is proportional to "wetted area"
This means that the basic SHAPE of the Aptera is wrong!!!
Which is why actual real world low drag machines like Solar Racers are a single shape - not three separate shapes like the Aptera
This is our "Solar Stealth" - back in 1999 - just a High School project showing massively GREATER understanding of aerodynamics than the Aptera
You again do NOT NOT NOT understand the aerodynamics of very low drag shapes!!!Ok, drag calculation:
Drag Equation - Glenn Research Center | NASADownload as a Slide Drag Drag depends on the density of the air, the square of the velocity, the air's viscosity andwww1.grc.nasa.gov
Ok, let's ignore air density.
And we get the drag is proportional to the drag coefficient x frontal area x velocity squared.
Your solar racer has characteristics of a center bubble, low and flat, and maximizing the solar panel size.
Aptera, instead chose side-by side seating and a voluminous cabin area. They could have chosen a double bubble roof shape like the Abarth. But rather their egg shaped roof may well be much stronger. The solar cells were a recent addition and largely an afterthought, not intended for primary propulsion.
I'm not sure inline seating like the Messerschmitt KR200 would have sold. People like conventional seating in a vehicle, as well as conventional doors and entry.
The three wheel pods simply add the drag x area, and are more efficient than enveloping the body around them. Likewise the teardrop struts have minimal additional drag.
Anyway, the car does have compromises generally related to driver/passenger comfort. But overall its drag is lower than any production cars.
The link above puts the Aptera Cd*A = 0.27 m2, or 2.94 square feet. Lower than any production vehicle noted on Wikipedia including the very low production Volkswagen XL1.
And no evidence that it will be of a size that will make Aptera financially viable. The examples given for three wheelers prove my point...BMW? Polaris? Three wheelers outside tuk-tuks and delivery/work trikes in Asia are NOTHING in the West.There will be a market of people who will choose the Aptera over the Bolt.