Print Page - AIRFOIL SIZE

Title: AIRFOIL SIZE
Post by: ARNAB RC on April 18, 2019, 08:18:53 AM

HEY GUYS!!, CAN SOMEONE HELP ME WITH THE SIZE OF THE AIRFOIL FOR MY PLANE WINGS AND ALSO AT WHAT ANGLE I SHOULD FIX THE WINGS TO THE BODY OF THE PLANE. I HAVE ATTACHED THE DRAWING FOR THE WINGS.

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 09:56:17 AM

http://airfoiltools.com/search/index?m%5Bgrp%5D=naca4d&m%5Bsort%5D=1

Check out the airfoil database. Maybe you will get some inspiration.

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 10:09:21 AM

Quote from: pnkyjs on April 18, 2019, 09:56:17 AM
http://airfoiltools.com/search/index?m%5Bgrp%5D=naca4d&m%5Bsort%5D=1

Check out the airfoil database. Maybe you will get some inspiration.

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 10:13:26 AM

http://www.rcindia.org/beginners-zone/airfoil-calculation/

Title: Re: AIRFOIL SIZE
Post by: ARNAB RC on April 18, 2019, 03:50:08 PM

I am trying to build Boeing 777-200, so if you can give me the size of the airfoils.

My Fuselage is 161.6 cm, body thickness 20.32cm.

Title: Re: AIRFOIL SIZE
Post by: ARNAB RC on April 18, 2019, 03:53:05 PM

my whatsaap number is 9088667788, if you can send me the details or help me in building my project

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 04:34:47 PM

can you adapt the B737 airfoils to the B777 airfoil ?

Title: Re: AIRFOIL SIZE
Post by: ARNAB RC on April 18, 2019, 04:39:38 PM

WILL THAT WORK, AND IF DO NOT HAVE ANY PROBLEM CAN I HAVE YOUR NUMBER TO DISCUSS A BIT ON THIS PROJECT AS I AM DOING FOR THE SECOND TIME

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 04:46:26 PM

I Quote from "Emanuel António Rodrigues Camacho"
Answered Feb 23, 2018
The Boeing 777, as any other comercial aircraft (and even smaller ones), does not have an exclusive airfoil on its wings. When developing these structures, engineers need to find the best compromise between aerodynamic and structural performance and with that in mind they use several airfoils with different rotations that incredibly increases aerodynamic efficiency. I don't think these big aircraft manufacturers like Airbus or Boeing use NACA or any other known airfoils, instead they work for decades, creating complex geometrical shapes to achieve the best L/D ratio.

Title: Re: AIRFOIL SIZE
Post by: pnkyjs on April 18, 2019, 04:51:05 PM

Wing loadings do not follow linear scale miniaturization so they need to be much less when building smaller scale models .

So, you building for flight or static ?

Title: Boeing 777
Post by: K K Iyer on April 18, 2019, 05:05:21 PM

@arnab rc,

You might find this of some help.

https://www.flitetest.com/articles/boeing-777-delta-airliner

Title: Re: AIRFOIL SIZE
Post by: ARNAB RC on April 19, 2019, 10:19:44 AM

no i will make it fly

Title: Boeing 777
Post by: K K Iyer on April 19, 2019, 04:53:34 PM

@arnab rc,
Hope you saw the lovely flight and beautiful construction in the first video.

(The crash in the second video was due to incorrect reinstallation of the motor, as explained by the pilot)

Best wishes for your project.

Regards

RC India

RC Models => Electric Planes => Topic started by: ARNAB RC on April 18, 2019, 08:18:53 AM