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Search took 0.02 seconds. Search: Posts Made By: AeroMcAeroFace
Forum: Aerodynamics 08-02-2022, 06:28 AM
Replies: 179
Views: 103,720
Posted By AeroMcAeroFace
Although that is assuming that the length and...

Although that is assuming that the length and stiffness of the arm and resonant frequencies of the attaching and detaching flow don't create mirror wobble or transmitted buffeting through the arm....
Forum: Aerodynamics 07-29-2022, 07:03 AM
Replies: 179
Views: 103,720
Posted By AeroMcAeroFace
Was that because it is away from vortices from...

Was that because it is away from vortices from the A-pillar or because it created separation all down the side of the car in its wake?
Forum: Aerodynamics 12-19-2021, 11:58 AM
Replies: 1,307
Views: 163,761
Posted By AeroMcAeroFace
31473 ...

31473
https://www.youtube.com/watch?v=I6isLvfvYFQ&ab_channel=AMMONYC

Interesting aerodynamics around the wheels at 8:29 and 9:40-11:00

Some are for brake cooling, no idea what the rest are.
Forum: Aerodynamics 10-22-2021, 11:33 AM
Replies: 11
Views: 1,516
Posted By AeroMcAeroFace
Problem is, that the price of fuel is so cheap...

Problem is, that the price of fuel is so cheap compared to the price of a new car. (even in expensive fuel places like the UK, at currently £1.40 per litre) As a consumer spending $30 000 on a car...
Forum: Aerodynamics 08-17-2021, 09:56 AM
Replies: 4,211
Views: 1,321,820
Posted By AeroMcAeroFace
It does look a bit like a trimaran to me...

It does look a bit like a trimaran to me https://www.niferry.co.uk/wp-content/uploads/2015/06/Seacat-Scotland_Ferry-Pubs-PC_Sea-Containers-scaled.jpg
Forum: Aerodynamics 07-29-2021, 06:08 AM
Replies: 1,307
Views: 163,761
Posted By AeroMcAeroFace
Zundapp Janus inspired

Zundapp Janus inspired
Forum: Aerodynamics 07-05-2021, 07:11 AM
Replies: 138
Views: 11,395
Posted By AeroMcAeroFace
Search for push me pull you boat. I think...

Search for push me pull you boat.

I think you would need a hydrofoil to get low enough drag, but then you need to get up to foiling speeds. Theoretically possible, realistically practicable? I...
Forum: Aerodynamics 07-01-2021, 11:30 AM
Replies: 138
Views: 11,395
Posted By AeroMcAeroFace
Yes, that is correct, I agree. But maybe stay...

Yes, that is correct, I agree. But maybe stay away from "debunking" things without full knowledge. Provide counter arguments, but debunking?
Forum: Aerodynamics 06-18-2021, 09:00 AM
Replies: 141
Views: 24,673
Posted By AeroMcAeroFace
I agree with Julian here, without knowing your...

I agree with Julian here, without knowing your margin of error it is impossible to claim that something does or doesn't work.

You need to test your test regime before you test your variables.
...
Forum: Aerodynamics 06-16-2021, 03:27 PM
Replies: 138
Views: 11,395
Posted By AeroMcAeroFace
at wind speed, the wings on the propeller are...

at wind speed, the wings on the propeller are still moving, and like the sail on a tacking boat, still providing thrust.

It doesn't require over-unity, because essentially the energy is coming...
Forum: Aerodynamics 06-16-2021, 01:15 PM
Replies: 138
Views: 11,395
Posted By AeroMcAeroFace
sorry, that isn't true, the energy doesn't always...

sorry, that isn't true, the energy doesn't always flow from the wheels to the propeller, the energy can flow from the propeller to the wheels.

in the beginning, the car isn't moving, but has a...
Forum: Aerodynamics 06-04-2021, 01:32 PM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
I don't ecomod, purely because it isn't worth it...

I don't ecomod, purely because it isn't worth it financially, any "aero" mods mean that I turn into an insurance liability, and given the amount of driving I do it would never be worth it...
Forum: Aerodynamics 06-04-2021, 06:19 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
You may be, I don't think anyone else is. It is a...

You may be, I don't think anyone else is. It is a theoretical discussion.
Forum: Aerodynamics 06-03-2021, 07:08 PM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
All three of my most recent posts show SAE papers...

All three of my most recent posts show SAE papers that demonstrate the concept of air foils designed to create partial lift for the purpose of reducing rolling resistance.
Forum: Aerodynamics 06-03-2021, 06:36 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
You can patent ideas without evidence or...

You can patent ideas without evidence or prototype, a common example of this in the UK is when British Rail (former nationalised rail provider) patented a passenger space vehicle powered by...
Forum: Aerodynamics 06-02-2021, 07:10 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
Further to the above, here is a graph showing the...

Further to the above, here is a graph showing the reduced rolling resistance and also total drag. 30756

They also quote "For safety, stability and/or economy, positive use can
be made of...
Forum: Aerodynamics 06-01-2021, 10:41 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
Doing a bit more research yields this,...

Doing a bit more research yields this, https://core.ac.uk/download/pdf/195212282.pdf

Very interesting, not wings technically but use of blown aerofoils, that selectively increase lift in order to...
Forum: Aerodynamics 06-01-2021, 07:10 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
I never said economic return, it is a theoretical...

I never said economic return, it is a theoretical discussion, the gen 1 insight lost honda money, the original veyron lost money, every solar car ever made has lost money. As I wrote in the closing...
Forum: Aerodynamics 06-01-2021, 06:37 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
Adaptive suspension

Adaptive suspension
Forum: Aerodynamics 05-28-2021, 10:17 AM
Replies: 33
Views: 2,693
Posted By AeroMcAeroFace
Surely all the solar challenges can't be only...

Surely all the solar challenges can't be only students?
You want ultra LRR tyres? Your team needs to be personally sponsored by a tyre company, who then charge you quite a lot for the tyres that...
Forum: Aerodynamics 05-28-2021, 07:03 AM
Replies: 33
Views: 2,693
Posted By AeroMcAeroFace
Those ultra-low rolling resistance tyres have...

Those ultra-low rolling resistance tyres have very little lateral grip unfortunately, with a forward centre of pressure and large rear lift, in sudden changing crosswinds very high crosswind drag...
Forum: Aerodynamics 05-27-2021, 07:00 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
Running the numbers like aerohead suggested, reading the literature like Julian suggested

Well it was more to start a debate about whether lift is in itself bad. I don't believe it is.

If 10kg of lift is going to upset a car, then driving with very little fuel will have the same...
Forum: Aerodynamics 05-26-2021, 06:08 AM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
I think both of you are misunderstanding my...

I think both of you are misunderstanding my proposal, I am not suggesting floating cars, or turning cars into flying planes or hovering ekranoplans, I am suggesting partially lifting cars.

Such...
Forum: Aerodynamics 05-25-2021, 12:32 PM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
I agree with what you have said here, and I think...

I agree with what you have said here, and I think it is clear why normal cars currently don't fly.

However, if the car is already "flying" then there would be able to have control surfaces. How...
Forum: Aerodynamics 05-25-2021, 12:17 PM
Replies: 200
Views: 13,246
Posted By AeroMcAeroFace
Doing some calculations it seems that aerofoils...

Doing some calculations it seems that aerofoils of over 100 times lift to drag are common, and given a rolling resistance of 0.01 the difference between lifting using wings and using wheels are...
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