AERODYNAMICS FOR CARS
Posted: Tue Nov 14, 2017 1:35 pm
The tear drop and or the reversed tear drop has been widely accepted as an ideal starting point. For an aerodynamic shape.
A rain drop for example has a rounded front and tapered tail, this being the ideal shape for the least resistance for that mass at that speed.
place the same droplet on say table that offers some resistance and apply wind pressure to it and it will gradually form, temporarily to that
rounded front tapered tail shape and as the speed of the wind increases it will gradually change to a reversed shape.
The speed at which this reversed shape becomes the preferable aerodynamic ideal depends on speed, with side issues.
A classic example is a yacht,where the shape is pitted against the greater resistance, water, as against air. So the reversed shape
becomes necessary at a much lower speed. look at the water line on a racing yacht.
In cars the reverse shape becomes a useful issue to a lesser degree at lower speeds but a benefit at higher speeds and highway speeds.
revers tear drop or often refered to as wedge. Not many knife edged cars around!
Reason for this outburst is. I came across a variety of bits and pieces about the merits of putting the round end forward, as in one case where they were going to change a 928 Porsche front to rear to check which is better. My guess! Yes marginal at lower speeds, at high speeds wrong!
A rain drop for example has a rounded front and tapered tail, this being the ideal shape for the least resistance for that mass at that speed.
place the same droplet on say table that offers some resistance and apply wind pressure to it and it will gradually form, temporarily to that
rounded front tapered tail shape and as the speed of the wind increases it will gradually change to a reversed shape.
The speed at which this reversed shape becomes the preferable aerodynamic ideal depends on speed, with side issues.
A classic example is a yacht,where the shape is pitted against the greater resistance, water, as against air. So the reversed shape
becomes necessary at a much lower speed. look at the water line on a racing yacht.
In cars the reverse shape becomes a useful issue to a lesser degree at lower speeds but a benefit at higher speeds and highway speeds.
revers tear drop or often refered to as wedge. Not many knife edged cars around!
Reason for this outburst is. I came across a variety of bits and pieces about the merits of putting the round end forward, as in one case where they were going to change a 928 Porsche front to rear to check which is better. My guess! Yes marginal at lower speeds, at high speeds wrong!
