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Search: Posts Made By: ecto1
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Forum: Rumours & News
13th Apr 2019, 12:40
Replies: 146
Views: 103,973
Posted By ecto1

By the way, that report previously posted: ...

By the way, that report previously posted:

https://www.ucsusa.org/sites/default/files/attach/2015/11/Cleaner-Cars-from-Cradle-to-Grave-full-report.pdf

Is flagrantly ignoring HUGE factors:

-...
Forum: Rumours & News
13th Apr 2019, 12:02
Replies: 146
Views: 103,973
Posted By ecto1

These are no arguments, these are facts,...

These are no arguments, these are facts, painfully learnt by me at work.

There are many more figures that go into the comparison, none of them changing the result.

For example, the weight of a...
Forum: Rumours & News
13th Apr 2019, 11:10
Replies: 146
Views: 103,973
Posted By ecto1

Because in cars, the penalty for overweight is...

Because in cars, the penalty for overweight is zero at constant speed, and very little at variable speed if you compare with a solution without generative braking*.

Drag (the main reason you need...
Forum: Rumours & News
13th Apr 2019, 10:44
Replies: 146
Views: 103,973
Posted By ecto1

I believe that electric flight could be privately...

I believe that electric flight could be privately explored for research purposes. And probably we need test pilots, and we need to train them and this may be a good plane to do it. So far so good, as...
Forum: Rumours & News
13th Apr 2019, 09:55
Replies: 146
Views: 103,973
Posted By ecto1

Yeah, dream all you want. BTDT. When you have 400...

Yeah, dream all you want. BTDT. When you have 400 times less energy per kg, all things considered, no amount of politics will make it a viable alternative for airborne trasport. Period.

You can...
Forum: Rumours & News
12th Apr 2019, 23:59
Replies: 146
Views: 103,973
Posted By ecto1

Car battery (varta e44 77Ah) Weight 18 kg. Usable...

Car battery (varta e44 77Ah) Weight 18 kg. Usable energy stored 2.21MJ. 18 kg Jet A1 or gasoline: 803MJ of usable energy.

Going any fancy battery (lithium ion) will do x2 energy x10 price for the...
Showing results 1 to 6 of 6


 
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