Balsa USA Stingray with DLE-20, RC Plane Build N0 37: Calculate Wing Loading

[@alanreynolds2125]

Well that was almost too much for me with my first coffee of the day👍🎄

[@NathanWaldock]

Nice 1 James Great looking aircraft but I was confused on working out the math I've never done that just built em and flew em thanks for vid

[@JamesRCPlaneTech]

Thanks! People like cubic loading as well, but either way doing a straight wing loading calc the "old Way" still works since you are comparing to the related charts. But I need to learn the cubic method to be up to speed.

[@marcobuonavita2757]

utile e necessario per essere tranquilli

[@JamesRCPlaneTech]

Hi Marco! Thanks! Happy holidays!

[@duainrothman7930]

Hi James TKU it's been so long that I forgot the math on how to do it. Most of the time I jst went by the Wt and went from there. I'm jst finishing up an Ace Super Pacer w/OS 32, looking to maiden this wknd or on Mon 😊. Good luck on yours

[@JamesRCPlaneTech]

Thanks and awesome that you recently built a kit! Good luck with the maiden!!

[@clarencegreen3071]

A somewhat better indicator of how a plane will fly is the cubic wing loading, or wing cubic loading. To find this, calculate the wing loading as you did in this video, in units of oz/ft2. Then divide this number by the square root of the wing area, in ft2. Area of wing, 8.8 ft2. Weight of plane, 166.4 oz. Wing loading = 166.4 / 8.8 = 18.9 oz/ft2. Square root of wing area = square root of 8.8 = 2.97 Cubic wing loading = Wing loading / Square root of wing area = 18.9 / 2.97 = 6.36 Here are typical cubic wing loadings for different types of planes: Gliders 4; Trainers 6; Sport 9; Pattern 11; Racers 12; Scale 10 - 15; Full Scale 15 - 20. The value of 6.36 for your plane is very close to that of a typical trainer and is considerably lighter than a sport plane. I predict that it will be rather "floaty," and will land at a low speed.

[@JamesRCPlaneTech]

Thanks, I need to brush up on cubic wing loading. I'll check it out, thanks! Awesome, thanks for the calculation and check!!!