Recent content by F1Guille

Thanks all of you guys, managed to fix my experiment! good discussion I'm reading here, but my question has been solved. Thanks to all of you once again, very appreciated.

Okay I get the idea my data is screwed, so if I fix the airflow below I should be okay? I'll try that then and see how it goes. Another question: Anyone used javafoil? Thanks to everyonee.

Okay, then do you know any website where there is data (Cl and Cd at different AoA's) about the airfoil??

Yeah, but my airfoil isn't any airfoil hich has been designed before because it isn't rounded in the leading edge, but straight for simplicity for construction. So, if there is no graph?

what if you don't have a graph?

Normally yes, however in my experiment due to the fact the resting point of my wing is on a wooden platform, this restricts the air flowing under the wing, therefore no matter what AoA the air molecules under will be nearly consistent, which is what I think causes my data to be wrong. However...

Erm Yeah there is, Cl = Cl(2d slope) * (AR/AR+2)*aoa

Boneh3ad, You are right in that the wing is too close to the platform, however I did introduce some wood pieces so some air could get underneath the wing, making it lift, however I tried already the idea of a spring, using a Newtonmeter, the smallest I found, and the force upwards is too small...

YKobe23, yes there is a lot of friction I must say, however I think it's the same in all AoA's, so therefore the only problem is I get less lift than there really is. However I might be wrong, because my results right now are wrong, so... Guille. P.S What are you doing it on now then your EE?

I haven't said much about the actual experiment... my bad, I'll explain. I made two holes on each side of the wind tunnel, where I put two wooden cylinders. Then there is a squared platform which attaches both cylinders at both ends of the platform where the wing will lay. Then in that platform...

Hi, I'm right now coursing IB (equivalent to A-levels) and one of the compulsory essays we must do is called Extended Essay. It's an essay you do on a topic you choose. I choose aerodynamics. Created a "wind tunnel" out of plastic and made it rigid with hard plastic pieces which were partially...