Hey F1 Technical,
I have an order in on a camper trailer in which we'll tow fairly log distances, we have a 3000km month planned. I picked this model because it's somewhat low profile for the size which will improve the towing characteristics (compared to a full size caravan).
Being a frequent reader of the hardware dev section it had me thinking about aerodynamics of my setup and if a canopy fitted to the ute (pickup) tray would help or hinder the aerodynamic drag effects. I've edited some images of a similar vehicle with the same trailer. One with a standard ute / pickup tray (assume flat top, not open) and a full canopy setup flush with the vehicle roof.
My question is, which will be more efficient for towing and how much impact would it have? With a canopy installed I assume will be less disturbance of airflow but I have heard in drag racing the low pressure area in the tray actually improves efficiency. I'm no aero analysis expert so I'm leaving it open to discussion here.
Also, separate similar question. Aftermarket bull bars significantly reduce air intake for the intercooler, radiator and transmission cooler. I'm looking to maximise airflow with some horizontal and vertical ducting to ensure the air flows through the radiator etc and prevent it bleeding around inside the bumper bar. Would having a grill between the headlights increase the speed of the air? Would a lower interference or no grill allow more flow or slow the air and reduce speed? See lower and second pictures - factory left, aftermarket right (I don't have spotlights).