Re: ELECTRIC CARS MUST BE CARBON FIBRE 300KG (NOT 3 TONNES!)

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Article #4897

#4897

From: gaby de wilde
Date: Tue, 14 Aug 2012 03:17

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On Aug 14, 2:55 am, Sylvia Else <syl...@not.at.this.address> wrote:
> On 14/08/2012 7:55 AM, Graham Cooper wrote:
>
> > Electric Cars will need a 5 KILOWATT Engine
> > (2 AIRCONDITIONERS WORTH OF POWER)
>
> > NOT a 100KW ENGINE (50 AIRCONDITIONERS POWER)
>
> The power requirements of a vehicle are not just a function of its mass.
> At higher speeds, wind resistance is a major factor, and won't be
> changed by making the vehicle lighter.
>
> Sylvia.

Down the wind you use the wheels to power the propeller.

Up the wind you use the propeller to power the wheels.

Even single cell organisms understand this.

Also:

The energy in the sum of wind + drag exceeds it's parts.

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From: gaby de wilde <gdewilde@gmail.com>
Newsgroups: sci.skeptic,aus.tv,aus.cars,sci.physics,alt.sci.physics
Subject: Re: ELECTRIC CARS MUST BE CARBON FIBRE 300KG (NOT 3 TONNES!)
Date: Mon, 13 Aug 2012 20:17:10 -0700 (PDT)
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