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I have decided to start posting progress of my active aero experiment on here in case anyone is interested in following along. I am using a 69” NRG wing which isn’t the most effective track wing but the idea is the same for other wings with similar designs. I am trying to keep this experiment as cheap and “simple” as possible so this means lots of Brian power haha. I have seen Keith from flying miata try this out and I am sticking to use the NA headlight motors but mount them inside the trunk. I came up with a way similar to a rocker arm suspension setup using 1/4” aluminum sheet, it’s a work in progress but hopefully everything falls into place. Pics attached, updates to come.
That AoA seems far too aggressive for track work, do you need active aero for autocross? The principle is sound, but you need to work with the wing's L/D curves to determine the range of movement required. Typically the low drag AoA would be around 0*. At your highest AoA, you need to tuft test for stalling of the underside at the speeds you want max DF, if there is stalling you need to work backwards find the angle that maintains attached airflow, that will be max available DF for that wing at that speed. That will give you the range of movement you will need to accommodate between the two extremes of low drag low DF and high DF high drag. There are other ways of doing it, but that will work and not require lots of $$$
I don't understand what is the purpose of this active aero? Air brake? Drag reduction system?
From the pictures it seems more like an air brake with the down position being standard, and then lift up the rear under braking. The up position seem very aggressive. This wouldn't be good for cornering, because you appear to significantly increase the frontal area of the wing, and your lift:drag ratio is probably pretty terrible also. And also you want the standard position to be balanced, so if it's 'off' then it's not a suicidal oversteery machine.
If you're going for a DRS style system, then you're going to want to drop the rear to take all the rake out of the wing.
That AoA seems far too aggressive for track work, do you need active aero for autocross? The principle is sound, but you need to work with the wing's L/D curves to determine the range of movement required. Typically the low drag AoA would be around 0*. At your highest AoA, you need to tuft test for stalling of the underside at the speeds you want max DF, if there is stalling you need to work backwards find the angle that maintains attached airflow, that will be max available DF for that wing at that speed. That will give you the range of movement you will need to accommodate between the two extremes of low drag low DF and high DF high drag. There are other ways of doing it, but that will work and not require lots of $$$
Looking forward to the updates
09-25-2022, 06:03 AM
Active aero experiment
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