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Aerodynamics / Re: Educate Me On Hood Scoops
« Last post by 71GSSDemon on Today at 02:13:52 PM »What top speed do you anticipate reaching?
As the speed goes up, the inlet size goes down, but may be inadequate for launch.
For me, the ultimate goal will be 200mph, but I was more looking right now for thoughts on forward facing vs cowl induction vs the rules. Like in my original post (below) is the added air (close to 5x what my engine can consume) worth any aero advantage of getting air up over the windshield. I did a mock up and it appears the scoop would be a few inches short of the roof which makes me think air will make a sudden change, likely increasing downforce at the top of the windshield but then may be very dirty over the roof, back window and rear spoiler. This to me would be a disadvantage over a lower scoop.
Rules say 11" high, can start at the leading edge of my hood at stop short of the windshield (distance depends on whether it is forward facing scoop (1/2") or rear facing (2"))). If a cowl induction style scoop would be used, rule state it has to be completely open at the back. This is a tremendous amount of air getting forced into the engine compartment. The engine alone would not likely consume all of the air at speed and bunch up, causing high drag. For a forward facing scoop it doesn't mention inlet size. It seems to me, an 11" tall, hybrid cowl style scoop with a forward facing inlet, sealed to the intake pan, would be the best of all styles, seeing that I can then size the inlet and be within 1/2" of the windshield.... yes?
