Toasterdynamics Episode 13: Testing Canards on the Track - Awesome Aero or Drag Generators?
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- Опубліковано 17 тра 2024
- Investigation of the aerodynamics of the toaster-shaped Mitsubishi Colt Ralliart Z27AG using basic wool tuft analysis and other techniques.
This episode: More aero testing at Sandown, this time investigating whether apparently optimised canards are really worth it on the Colt as a drag reduction device.
References / Links:
- airshaper.com/videos/drag-mea...
- • Drag Measurement - Co...
Toasterdynamics Episode 11: Canards and the Colt. Part 2.
• Toasterdynamics Episod...
- Toasterdynamics Episode 10: Canards and the Colt (or "dive planes" if you drive a submarine)
• Toasterdynamics Episod...
Music: "Sky Skater" - Geographer (Royalty-free)
rcoltlyf is not a trained aerodynamicist, mechanic or indeed anything to do with cars. He is a scientist though, likes understanding how things work, and really likes his Colt.
コルトラリーアート! :)
00:00 The low budget but ever-changing intro
00:16 Introduction: Canards, Drag and Airflow
00:46 How Testing Was Done
01:32 Changes in Calculating Drag Compared with Last Time
02:06 Test results
03:07 Future Directions
03:48 Credits
Dude! Such a well put informative video! Noice
Hi, what do you think about taking out the fog light and making an air curtain tunnel for front wheels instead of it. In case of drag reduction air curtains proved their efficiency.
I think it would be plausible if you can get the air around the corner from a round entry to a slit like exit in a non turbulent fashion. If it could not be done smoothly I reckon you just create more drag. I think there is probably a reason they go from slit like entrances to slit like exits on purpose built curtains.
@@rcoltlyf Well I doubt that round to narrow tunnel would be an issue. Ford uses air curtains on F150 with extreme angles of air channel, and air box in the middle. This thing should be turbulent as hell, but it works.
UA-cam bans my comments with links, so i can't share articles(
@@user-id3su6ot1o Not sure ford does that anymore on the latest 150 models. At least, none I could see. Looks like they did like cybertruck, external channel around 1 inch wide on side producing similar effect. Cyber truck increased it to a 2 inch or so groove (or so I can guess from the other vid I saw) from their concept car which had less than a 1 inch groove/channel with purpose of wrapping around the outside of front tires. However that’s not to say it (the integrated internal channel) isn’t effective or done, plenty other do that curtain approach like fisker ocean on front and rear of front wheel. And then there’s rivian which has a strange large gap behind front wheels to prevent air pocket presumably. Seperately I see new lexus SUV’s messing with unique and significant protruding guides as well.
I think I have the solution to your problem. I'm from Argentina, and I'm just looking for aerodynamic accessories to install on my vehicle (peugeot 408 1.6 HDI -yes, a diesel engine- has many newtons per meter, or rather "NM"); I don't use it for running, but for long-distance trips, and I was interested in buying accessories that would reduce my darg.
What I can advise you to try, and without uninstalling the 2 canards that you plan to install (only that I would eliminate the 2nd or lower one, and work directly with the lower front lip as it ends on the lower front side of the nose, right in those last 8 cm, I would give it in a straight line with a 15° attack and I would use 8 cm long and 7 cm wide, no more than that), is to incorporate around 3 canard, after the wheel lead. In relation to the "black" curved strip on the fender, you can "enclose in a "square" to correctly measure the location of each canard.
The 1st (the one at the top), place it 10 cm below the highest line of the "black stripe on the fender" with an angle of attack of about 15° (later try 20° if the previous one doesn't work) but it must be " straight" not curved, it is more of an airplane flap than anything else. You could make it about 10 cm long and about 8 cm wide.
The 2nd (the middle one and I think the most important) about 15cm or 20cm below the 1st canard or in the middle section of the fender according to the highest and lowest part of the square that you calculated for the fender. This should be curved at about 30° and should be between 25 to 30 cm long and about 14 cm wide to capture the greatest possible turbulence.
The 3rd canard would replicate the same as the 1st, about 16cm wide, straight with the same angle of attack and of course it should be located above the "black" skirt.
I think that with these modifications you would be ALMOST ready, there would be 2 more modifications left, 1 before the rear wheel and another after the rear wheel.
Outside of these modifications, and if you see an example image of the car I have, you will notice that the drag of my car is much less than yours, I think my car could have about 0.28 Cx.
Well I hope you read my comment and if possible one day try it and film it, I'm very intrigued to see it.
Without further ado, I wish you success.
If nothing else you get a prize for the most detailed comment! Have you got a link to a photo of your car with presumably what you are describing? I read the words but I suspect it would be easier to see a picture.
Canards or dive planes are meant for downforce, no drag reduction. And they are one of the least efficient sources of downforce.