I should have said that it was auto, of course. Unfortunately I never did the same sort of driving in the 3 previous Omegas, all of which were far better vehicles than that last one. Maybe it was just a dud.
OK, so I'll dig it out. This google find me a Spit (of some sort or other!) has about 22 sq metres of wing area, and 2600Kg. So 26Kn/22 sq metres ~= 1.2kPa. Or just over 1% of an atmosphere.
Boyle's law will give you a similar compresssion. Shall we say 2% at peak, seeing as it isn't the same over the whole wing?
Wind pressure with a wind speed approximating to motorway speeds seems to be about 0.5kPa. Even less.
I think you missed out the ability of a spitty to pull 6 g in a turn
So thats 25497.29 * 6=
/22 sq
so abiout 7% of an atm,ospere
More like 15% when pulling hard..
well you would actually. Since a car is not a very aerodynamic device
Wings are designed to be low drag high lift devices. Cars suffer from form drag.
In essence the way to understand this is as a pressure differentual between the front and the back: the lack of laminar flow at the rear where the flow breaks into vortices at high reynolds numbers creates a partial vacuum behind the car and the compression of the air in front creates a pressure rise.
Ah but a ship is weightless because its weight is in equilibrium with the water it displaces. Otherwise it would sink...
On a related topic, how come the small bit of tyre that touches the ground can support a van? There might be 40psi in the tyres, but multiply that by the area of tyre touching the road and it doesn't seem to come to much. It must do though.
Time for a snooze I think. All this hard thinking is beginning to hurt.
Electric makes most sense with short range microcars. Microcars use less en= ergy per mile, reducing battery weight and cost for a given range. Short ra= nges only mean a major reduction in battery cost and weight, and thus again= energy use. So if you live on the edge of town and only want the car to he= ad into town and back with, and you're not getting out of 30mph zones, a le= ad acid mcirocar can make sense to an extent. But only if you're ok with it= s various downsides. Such a beast can be homebuilt cheaply, but with all th= e issues it won't suit many people.
Full size electric cars don't make good sense today. Maybe they will with s= ome as yet unknown battery technology that combines low cost, weight and ch= arge time.
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