Subject: Roadable Canard
From: Rotary Engine
Date: 7/6/2005, 6:06 PM
To: AA-me


> > I was just contacted by the owner of this webpage:
> >
> > http://www.milneraircar.com/
> >
> > A roadable canard. Looks like he's done a lot of study and built R/C
> > models.
> >
> > Perry


> > Hummmm, dreaming here - 2 electric motors of 10kw each to provide ground
> propulsion to 85 mph ??? For a 3500 lbs ??? The Ford Hybrid Escape of
> similar mass has 1 70kw motor and can only do 25 mph on that motor !!!
> > I guess they didn't look at the hybrid competition...
> > > -dave

Hello, whoever you are.

I have been drawing my information from the Hypercar information written about
ten years ago by the Rocky Mountain Institute (ww.rmi.org). They seem to have
done quite a bit of work to establish what they thought could be done at the
time. They are proposing a 4 to 5 passenger vehicle that weighs 1000 lbs.

Comments?

Thanks >

Ahhh, Hi Jim. Now that makes sence... nearly 1/4 the mass of your car
and about 1/3 the electric power (they also had 20kw of motors?) ... So
there would be the question. But speed is your problem... (85mph)

Now,

if you did not have the "driveablity" requirements as the average car,
then you would be OK on the accelleration, but that cruise speed of 85 mph
on the road ??? Does not sound possible. Your drag with the wings folded
would seem to me to be similar to the Ford. So, the square law for drag
means 25 mph is a tad less power required than 85. I don't see on the
http://www.rmi.org site where you got 20kw was being used for a 3500 lb
vechicle at 85 mph... that is what I see as the large problem.

-dave


-- 
Best Regards /Mit freundlichen Gruessen,
  dave ( at ) arb.net http://arb.net


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