How to Design Model Airplanes that Fly - Crash Course

This video explains and demonstrates how to use three engineering concepts to design your own model gliders that fly.
Wing Cube Loading:
www.rccad2vr.com/aeronautics/...
Center of Gravity Calculator (conventional tail):
rcplanes.online/cg_calc.htm
Center of Gravity Calculator (canards):
rcplanes.online/cg_canard.htm
FliteTest RC Airplane Design Article:
www.flitetest.com/articles/ea...
Timecodes
0:00 - Intro
1:33 - Weight and Speed
4:03 - Wing Shape and Weight Distribution
8:24 - Tail Volumes
10:42 - Conclusion

[@BenMa-yq7oy]

so glad to have discovered your series today!

[@boywithadolphin]

Another great video. Look forward to seeing more. Well done!

[@arushsingh5592]

Hey great video. Can you please make a video on making these gliders rubber powered. Please

[@davidbrohede]

Appreciate your video! Looking forward to more of this flight mechanics for model airplanes!
A small piece of advice on the tech part of making the videos: if you would use a lav mic, mounted on your shirt, it would dramatically increase the audio quality of the recording.

[@davidbrohede]

I’d recommend Rode smartlav+ and an extension TRRS cable to your phone 😊

[@collinmccallum]

great information delivery!

[@fisharamy1040]

hi you make learning fun Look forward to seeing more. Well done!

[@MrVipulLal]

Very useful video. Many thanks!

[@abdoulkarimdambo7905]

got yourself a sub :)

[@karinarivera8745]

I need the dimensions please it's for my university project thanks

[@DesignYourOwnAirplanes-xd6lz]

The previous video includes dimensions

[@Godxbispro]

Yes🎉🎉

[@linsfunbox4052]

Nice video! Is wing area orthographic area for WCL? Also when we define CG, should we calculator where CG at first by area of wing and stabilizer , and then make sure front side of CG and rear side of CG have the same weight?

[@DesignYourOwnAirplanes-xd6lz]

I’m not sure what you mean by orthographic area. On a plane with a conventional tale it would be only the area of the wing, but on a plane with canards it would be the area of the wing and the canards since the canards provide lift too. It’s generally best to estimate the CG location before starting to build the plane and make adjustments to your design if you think it might be too difficult to get it in the right location.

[@linsfunbox4052]

@@DesignYourOwnAirplanes-xd6lz Thank you so much. What I am trying to say is should I use actual wing area to get WCL or wing projected area when calculate WCL for dihedral wing or anhedral wing

[@DesignYourOwnAirplanes-xd6lz]

@@linsfunbox4052 you should use the actual wing area.

[@linsfunbox4052]

@@DesignYourOwnAirplanes-xd6lz Thank you so much! it is much easier to use actual wing area.

[@mastercrack4714]

Que material usaste. What material uses

[@DesignYourOwnAirplanes-xd6lz]

I use Adams Read-Board

[@daviddavids2884]

:54 it is the opposite of smart to: use this much sweep in the main wing and stab of a GLIDER, and to locate ballast mass aft of the main wing.
9:55 design does not have to be so math-intensive. a few ratios will go a LONG way; they can be used WITHOUT the need for SOFTWARE and a computer. for example: in the case of a free-flight glider, the span of the horiz-stab should be equal to twenty-five percent of the wingspan. and, vert-stab height should be equal to a bit less-than fifty percent of the stab span. root chords of stabs should be equal in length. d

[@my_dear_friend_]

It would not be smart if this swept wing glider failed to reach its objective. What is the objective of this glider?

[@sotm2]

Are you for real?

[@memky777]

DONT SHOUT ON ME!!

[@pepperpeterpiperpickled9805]

lol "crash course"

[@daviddavids2884]

5:30 wrong. this is center of mass (c-m). NOT cg. consequently, your explanation is NOT correct. cg should be located at thirty percent of chord/mac; at the WING's surface.
c-m should be located on the thrust line, at a point that vertically aligns with twenty-five percent of chord/mac. as indicated, in this illustration.
s3.amazonaws.com/assets.flitetest.com/article_images/medium/truecg-jpg_1384168691.jpg

[@my_dear_friend_]

Please explain under which circumstances the center of mass and the CG of an airplane are not in the exact same location.

[@finn_mcmissile]

30% is not a fixed rule especially if the wing tapers off like in his example. How the wing area is distributed should be referenced not just the chord length. The ideal spot also depends on the type of flight characteristics desired. More nose heavy for stability and more tail heavy for maneuverability.

[@AG-cd9ww]

This comment belongs in the confidently incorrect subreddit.