
Originally Posted by
slug_burner
Aerodynamic rule book!
a) Who said aerodynamics have to be a major influence on the design of offroad vehicles?
b) You can have an aerodynamic design without having the windscreen slope of almost all current cars - as an example, the Citroen D series has a windscreen that is near vertical , not much more slope than a Defender, but has a Cx lower than 90% of today's cars. One way of achieving this is to break the airflow away from the bonnet well in front of the windscreen - I have often thought of trying the effect of a bar of vortex generators across the bonnet of the 110 at the point it stops curving. And, of course, the rear does not need to be sloped at all, just needs to cleanly break the airflow away.
But an offroad vehicle is never going to have good aerodynamics - the need for good approach and departure angles and good groundclearance, plus adequate clearance round tyres to avoid jamming with sticky mud or jamming rocks and sticks means you are always going to have turbulant flow underneath.
John
Last edited by JDNSW; 9th March 2015 at 09:22 AM.
Reason: Something went funny!
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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