Le airfoil
Le greph
Tis only approximation so i tell 3 of the 4 to sod off and only use c_l dont scream at me kthx
Le wing mapped out on graph, +y --> +z, +x --> +x towards right.
Distributed force along the surface of the wing is approximated as a concentrated force acting on the centroid of the wing and centroid of the control surface. Overlaps exists but i cant be bothered to fix kthx
Bending moment interpreted from data passed with constants;
- number of spars
- average spar dimension
- spar cross section shape
- shear modulus of spar material
- young's / elastic modulus of spar
- average wing cross section area
- wing volume occupied by air to material fraction
Constants factored in with dynamic variables:
-IAS (m/s)
-Alpha (deg)
-Vertical G force (m/s^2)
Is only approximation, so is not accurate, but paints a decent picture
Dynamic variables are modifiable to visualize the approximate average wing deflection in degrees from the root to the tip. Again, this is a crude approximation as tbh nobody is ganna notice or give a crap about a quarter of a degree of error in sp.
145m/s, zero aileron deflection, level flight, 1g.
Graph shows deflection of wing for given alpha (AoA)
316m/s, 14 degrees of aileron deflection, 8G turn.
basically u go fast, u pull g, le wing does the wiggle wiggle deflect yes yes
Probably has a tonne of errors
I made this on a bored sunday afternoon a few weeks ago during reading week and didnt bother checking the numbers manually, neither can i be bothered to fix anything, sorry lol.
Now to put this heap of hot burning garbage into funkytrees... suffer
Lmao noob, wing doesn't flex only slinkies do.
wow
All I see are squiggly lines that look like mountains. No clue what that means, but cool.
@AN2Felllla no no, just a crappy teaser
I feel like your flexing on us lol
ok
yea
Nice. Tbh I haven't really been able to apply fluids too heavily. Approximations are fine - everything is approximated to some degree.
@spefyjerbf Yep, thanks. All I wanted was a rough approximation to have the wing flex and deflect without the use of free spin rotators in the game. Like you said, 2D airfoil is nothing like a finite wing, hehe... like making the assumptions of inviscid, incompressible flow over a perfectly flat, 2d surface... At the current stage, i've yet to learn applications of doing anything besides some rough approximations. In other words, I'm in the valley of despair of the dunning kruger effect graph lol. But i guess it works, kinda. I doubt the validity even for an approximation, but like you said, good enough for sp. kek
stuff I don't understand but cool
Ah, so to summarize, you are making a deflection angle based on the forces on the wing? Pretty cool tbh. A finite wing will behave slightly differently from a 2D airfoil, but I think that won't really matter in SP tbh. Good work!
What?
All I see is squiggly lines and confusion xD
@edensk Yeah, I'll definitely be retaking that course whenever people here decides to have a bit more sense of responsibility and not have a 4th wave. Taking fluids online was literal hell.
@BaconAircraft Oh yeah, online classes are awful, it's unfortunate you had to drop off as it's a very interesting topic, for me at least
I've managed to make some quite advanced wing physics for a little ultralight replica using engines and it works really well aside from some bugs, but I'm kind of taking a break from the game so I have no idea if I'll ever finish it either
@edensk
Tbh I doubt I know any better than you, I dropped fluids 3 days before the term course drop deadline because online learning was a shitshow and a half, so my knowledge is limited. My understanding structural analysis and whatnot vastly surpasses my understanding of aerodynamic forces acting on surfaces.
I just wanted to make something that's a bit more than increase load = increase bend but I dont think i'd ultimately use it for anything as of now.
Coloured mountains go weeee.
How come you used Cl and not CL?
I assume you could have used the thin airfoil theory to obtain the correctish CL slope and CL max
Or additionally you could have used the stall speed and weight possibly provided by a report or manual to obtain CL max, and use a simulator like XFLR5 for approximate graphs or something
Idrk as I've only studied aerodynamics in my free time so you definitely possess a lot more knowledge than I do
Looks like a very ambitious and fun project, good luck with it!
I'm bad at math lol
Idk why you made this so complicated lol.
High load = bend
Speak stupid for the rest of us kthxbye
bruh lmao what are these colored lines a friken 3 year old could draw better lines
why wing flex that bad wing is 100% sturdy bruhh