Mary Barra on aerodynamics

[kach22i]

Originally Posted by redpoint5

As I said, GM has to retain their existing customer base. Even if they engineer an aero truck that looks good, it can't be too radical a departure from their existing aesthetic or they risk alienating their customer base.............

I agree with you, and assuming that most of their customers want to be as far away from egghead science experiments as possible, it makes economic sense.

Some customers might even have warped perspectives worthy of ridicule as they ridicule others.

https://www.hardworkingtrucks.com/getting-politi-coal/


Stereotypes exist for a reason.

https://www.pinterest.com/pin/327144360402660397/

[Hersbird]

Stereotype, disparage, then miss your GM example with 2 Dodges. Do some races or genders have warped perspectives worthy of ridicule in your world?

[redpoint5]

Originally Posted by kach22i

I agree with you, and assuming that most of their customers want to be as far away from egghead science experiments as possible, it makes economic sense.

Some customers might even have warped perspectives worthy of ridicule as they ridicule others.

I tend to dislike antagonistic behavior from either extreme of an issue, and they are worthy of ridicule. That said, being antagonistic back merely solidifies their resolve to continue their bad behavior and be close-minded. Punching a Nazi feels good but accomplishes nothing at best, and creates angrier Nazis at worst.

I watched a documentary where a woman of arab ancestry imbedded with a white supremacist group. Rather than be antagonizing, she just asked questions and did not respond in anger at their racist behavior. Many of the people in the documentary disassociated from their white supremacist group, or at least back away from some of their most extreme positions. She merely allowed a reflection of their behavior to be shown to them, and those who didn't completely turn off logic responded positively.

There are some that will always be lost, because for them, tribalism is a much higher value than reason.

[Tahoe_Hybrid]

Originally Posted by oil pan 4

I don't care what they call it. It was cheap doesn't need gasoline or oil changes.

expensive battery change Resale value hahahhaha lmao,....
zero

[oil pan 4]

Originally Posted by Tahoe_Hybrid

expensive battery change Resale value hahahhaha lmao,....
zero

People are regularly paying more for the same car with a worse battery almost 2 years later than what I paid for mine. I'm not worried about resale value at all. I could probably sell it for more than what I bought it for. Hahahahahahaha.

If I change the battery I will put the 62kwh battery in. My ultra rare 86% capacity 2011 battery will be resold for most of what a big battery will cost. Since it would be a drop in replacement for some one with an undrivable 2011.

Shouldn't cost any more than a set of truck tires.

[aerohead]

Originally Posted by Hersbird

But as pointed out, the model 3 is downright normal looking. It's the best aero because it doesn't need cooling. Make the 2015 Chryler 200 and EV, block the grille off and I bet it's super close size and aero to the model 3. I do agree it is good looking, I have long thought the 2015 Chrylser 200 was the best looking car Chrysler had put out since at least the 50s.

I agree.There are many ICE vehicles with Cds low enough that,if the cooling system were blocked,they'd come in at,or below Tesla.The Chrysler 200 and Dodge Dart would be right there.BMW and Mercedes both have ICE cars at or below Tesla already in the European market.It's all good!
Since General Motors invented the aeroshell,borrowed from Ford's board-across-the bed-rails to create the 1/2-tonneau,and was at Cd 0.315 in 1989,with the Gale Banks GMC Cyclone LSR truck,plus Cd 0.309,with their Holden Commodore Ute,plus a Cd 0.125 solar car in 1987,and Cd 0.19 Impact,also in 1987;they've got a ton of aerodynamic chops already on account.The new Suburban/Tahoe has 4-inches of vertical travel with their air-suspension.If the dedicated BEV platform incorporates that,it will definitely help with drag,without putting customers off.
As Hucho has said ,there's a lot of design latitude going down to Cd 0.25.Below that,one has to begin to respect Frederick Lanchester's shape of the 19th-Century.

[redpoint5]

One of the advantages of autonomous driving and vastly reduced crashes is that one day the vehicle may not need to be engineered for crash survivability. That means the shape can optimize efficiency, and the occupants don't have to wear seatbelts.

[freebeard]

Originally Posted by aerohead

there's a lot of design latitude going down to Cd 0.25.Below that,one has to begin to respect Frederick Lanchester's shape of the 19th-Century.

What, this?


https://cdn.newsapi.com.au/image/v1/...bbd?width=1024

Teaming up with his brothers in 1899 he founded the Lanchester Engine Company. In 1902 he patented the first outboard engine for boats, along with disc brakes, power steering and four-wheel drive.

[aerohead]

Originally Posted by freebeard

What, this?


https://cdn.newsapi.com.au/image/v1/...bbd?width=1024

He 'invented' the streamline body of revolution,coined the term 'aerofoil' (I'm working from memory)and capping plates used today on all race cars.
Ludwig Prandtl was the only other person on Earth who actually understood what Lanchester had accomplished.

[freebeard]

Lanchester is an interesting (but little-known) person.

https://en.wikipedia.org/wiki/Freder...er#Aeronautics

In 1906 he published the first part of a two-volume work, Aerial Flight, dealing with the problems of powered flight (Lanchester 1906). In it, he developed a model for the vortices that occur behind wings during flight,[38] which included the first full description of lift and drag. His book was not well received in England, but created interest in Germany where the scientist Ludwig Prandtl mathematically confirmed the correctness of Lanchester's vortex theory. In his second volume, Lanchester turned his attention to aircraft stability, Aerodonetics (Lanchester 1908), developing his phugoid theory which contained a description of oscillations and stalls. During this work he outlined the basic layout used in most aircraft since then. Lanchester's contribution to aeronautical science was not recognised until the end of his life.

Coventry University has his heritage and does a lot in automotive aerodynamics today.

In 1970, several colleges in Coventry merged to form Lanchester Polytechnic, so named in memory of Frederick Lanchester.[45] It was renamed Coventry Polytechnic in 1987, and became Coventry University in 1992.

Lanchester’s fantastic 1897 flying machine showcased at Farnborough – Lanchester Interactive Archive

A simulation of Fred Lanchester’s 1897 flying machine was among several designs showcased by Coventry University students at this year’s Farnborough International Airshow.
....
Osita used advanced computer software to prove that Lanchester’s machine would have flown. His work also suggested it would have been more aerodynamically stable than the Wright Brothers’ Flyer that became the world’s first plane to fly six years later in 1903.

I'm not finding the cylindrical aeroform, didn't that come out of the German wind tunnels? Oops, there it is.