Very helpful, thank you!

thank you very much for the material!

I am having problems when saving the run file. Every time i try to save it progam closes and nothing is saved. Do you know why it might be happening?

Not as obvious tool to use. Thanks for your time and explaining all of this!

I wonder why AVL generates 6 dynamic modes instead of generally known 5 modes - 1) Short Period, 2) Phugoid, 3) Roll damping, 4) Dutch Roll, and 5) Spiral. This happens always and with Drela's won models too. So, why is that and what is the 6th mode?

Don't let Noal Edmunds see this iii

Thanks for the video, it’s very helpful! I am wondering why is it the case that my Oswald efficiency is sometimes larger than 1 and sometimes it is negative? And as I increase the aspect ratio, the Oswald efficiency somehow decreases, which doesn’t make much sense. On the other hand, for a rectangular wing, avl somehow predicts the Oswald efficiency to be 0.9933 and it seems too high, I am wondering how accurate is the avl Oswald prediction or if I potentially did something wrong? Thank you so much!

Hello, a very helpful series, but the model aircraft I tried to analyze is stuck on reading airfoil, even though the direct path is already stated in the .avl file. I exported the plane from XFLR5. Please help, thank you.

Excellent job! 👍 I like your thinking and that you share all things you do. 👍 They say that most effective setup for windturbines is 3 blade one. Try it. Also I would like if you could design some permanent setup of electronic for reliable production of electric energy. That would be nice for all less skilled enthusiasts and makers. 👍 👍👍

Nice. 👍

It sounds like a movie soundtrack.

Danke fürs Posten

Could you fly from the office through 4G/wifi?

Very nice! Subbed to see more!

Incredible, great job

Cool.

How much?

Ja und super Spionage durch DJI.

Jede Baumlandung ist besser als das Wasser! Wenn der Wind dich packt oder der Airbag den Hintern hebt und der Kopf im Wasser ist: Lebensgefahr!!!

Windfrei Bedingungen!

If a cri cri can, this would be even better. If someone would design some small multirotor staged rotary engines.

Hi, wir machen Grade ein Physik Projekt und wollten fragen was du für die Höhenmessung und die anderen Daten nutzt

Hi, i was wondering if AVL can take as an import an .stl or some form of CAD file generated in a CAD software (i.e. Rhinoceros) or if the only way to import a geometry is through the avl geometry file.

LOL, evidently this is how an "electronics person" enters/learns to do model rocketry. The "aerodynamics person" would know about relative locations of cg & cp but be at a loss in developing their own in-flight monitoring; which IMO is no small feat. Wonder why no 'recovery system' like parachute or streamer was tried? Even though a small rocket, streamer/s could have been included? The motor being a C6-7 had an ejection charge that separated the rocket sections. So further aerodynamic advancements might include a "stretch cord" that attaches to both (separated) sections, for easier recoverability, and a parachute or streamer to reduce falling speed.

Nice video man!

Danke für s teilen 😮😊

I want to use this model but make the length of it 12cm, how can i do this. when i try to change the r value, i get a lot of errors

16:36 What command to put to output that file, im very stuck pls help

great video

How can i save just my CL distribution? I mean the values of CL in function of y

Hello , how can i make my control surface to be replaced by angle.

Thankyou for this

very cool !

Is there any fast way to calculate the plane polar, not the airfoil? or I have to iterate and extract the data by myself

thank you sooooo much！

Hello, may I know if it is possible to model a V-tail in AVL? and if so how would you go about doing it? Thank you

Vielen Dank für das sehr lehrreiche Video!

Danke für's Teilen!

Vielen dank dir für deiner Erfahrung. Bin seit ca 3/4 Jahr Pilotin und bin happy, dass ivh Lernen darf. Weiterhin gute Flüge. Merker für mich selbst: Notfallkontakt auf einen Zettel in einem Zippbeutel 😂

Hi Benjamin, There is no file in your link for the thesis. May I have the new link for it? Thank you very much.

Seit diesem Video sind jetzt 7 Jahre vergangen. Wie bewertest Du Deine Aktion mit diesem zeitlichen Abstand, Benjamin? Hattest Du Gelegenheit Deine alpinistischen und fliegerischen Fähigkeiten weiterzuentwickeln? In Deinem Video ist auffällig, dass das Fazit "lieber Ski mitzunehmen wenn man soetwas macht" den alpinen Gefahren denen man sich hier unwissend ausgesetzt hat nicht ansatzweise gerecht wird. Offenbar wurde also nichts gelernt oder zumindest nicht das richtige. Weder diskutierst Du die Lawinensituation (Nachmittags im weichen Schnee, einige bereits ausgelöste Schneebretter sind in Deinem Video zu sehen) noch deinen aussichtslosen Aufstiegsversuch (aus Deinem Track kann man erkennen dass Du von Deinem Landeplatz zum Grat ca 150 hm aufgestiegen bist, dafür hast Du nach eigener Aussage 2 Stunden gebraucht. Das zeigt, dass Du in diesem Gelände nichts verloren hattest), und nicht zuletzt Deine Falschbehauptung auf einem Gletscher gelandet zu sein (Du bist in der Nähe der Göppinger Hütte gelandet, da ist nix mit Gletscher, das ist ganz normaler Altschnee wie es ihn halt im Mai noch hat. Der Gletscher ist zwei Berge weiter nordöstlich an der Nordflanke.). Wie siehst Du diese Aktion mittlerweile?

Hello Benjamin! I have thoroughly been enjoying watching your tutorial videos as they have been extremely straight forward and informative. I was curious if i wanted to save .ps files in a specific folder, what would i type in AVL so it directs the .ps download into that folder on windows?

Very useful content. How can I store the surface force results of more than one case in the same text file?

Was ich gemacht hätte, wenn mir die Lage bei 4:42 bewußt geworden wäre: Den nächsten Hang erreicht man mit Rückenwind. Und er müßte wieder etwas tragen. Ich hätte versucht, mich da hoch zu arbeiten bis zur Wiese oben. Wenn es nicht geklappt hätte, dann Landung auf einem der Weinbergwege. Was haltet Ihr davon?

can i use that for a formula 1 car? thanks for the video

Hi, these were great videos. I have a problem - when I open the geometry window, keystroke mode does not work even though I have the cursor in the window when I hit LRUD. The picture does not rotate at all. I don't know what to do; it seems to work perfectly fine for those doing the tutorials on KZbin. Do you have any idea what might be causing this issue?

22:20 Scaling 25:20 Applying Mass to the run cases

15:30 Giving Elevator Deflection 16:45 Saving Stability Derivatives to .txt file 17:45 Saving the Plots

I am building a small scale wind turbine for my university project. The question I am interested in, is how to figure out the lift coefficient, power and rpm values to put into my calculation. How do lift coefficient and power that I want to generate effect the calculation explicitly? Does increasing the rpm put much more stress on the blades? How to quantify all these effects and decide which values I need? The diameter of my wind turbine is 35 cm. I don't think it can generate much power, maybe not even 5W? I am scared to put too much rpm, to not break the blades, and can't figure out the lift coefficient value, because when I put 0.7 it says that it stalls? Thanks in advance! Loved the video!

Thank you, Ben! How can I use it for a free-to-rotate wing airplane?