Help! Requesting help on how to design and build Atom RC Dolphin plane from images ?

[Karthik1130]

Hello all,
I am a beginner to RC plane flying. Just recently flew Baby Bugatti foamboard 24inch version. It was a beautiful experience.
I would like to custom design and build the flying wing plane named Atom RC Dolphin plane from the 5mm Depron foamsheet.
Its a molded EPP foam plane. But i want some tips and guidance on how to design and build this plane using A-fold, B-fold, and master series Flitetest build techniques.
I could able to get only the front, top and side view online from the internet. But i dont know how to further proceed.
Please help in how to start from scratch to design this plane.

 

[leaded50]

hopefully, my post here can help you on the way! my-way-of-scratchbuilding-from-ground-up

 

[Morgan G]

Hello all,
I am a beginner to RC plane flying. Just recently flew Baby Bugatti foamboard 24inch version. It was a beautiful experience.
I would like to custom design and build the flying wing plane named Atom RC Dolphin plane from the 5mm Depron foamsheet.
Its a molded EPP foam plane. But i want some tips and guidance on how to design and build this plane using A-fold, B-fold, and master series Flitetest build techniques.
I could able to get only the front, top and side view online from the internet. But i dont know how to further proceed.
Please help in how to start from scratch to design this plane.

I would start by making a flat foam version (think ft ez pack) to figure out the angle for the wings and also the size you want and then from there you can work on the wings and fuselage shapes with some card or smth for the curved sections connecting fuselage to wing.
As for the folds I’d use a A fold for the fuselage top and bottom and then an A fold for the wing spar (use a box spar).

 

[JasonK]

are you asking how to make foam look like that craft? (IE foam craft/hotwire/etc questions)
work out how to make a craft in that basic shape that will fly? (aerodynamic - IE will it fly questions)

regarding the second one:
that is just a flying wing with a forward(ish) swept wing. The fuselage is needed to get the CG sufficiently forward.

you can basically copy the top down view of the craft to get your silhouette.
Pick any reasonable airfoil shape for the wing.
Then use a tool like this to figure out where your CG should be (which will let you figure out how far forward you need to push that battery to get it to the correct CG)

• https://www.ecalc.ch/cgcalc.php (advanced costs money)
• https://rcplanes.online/cg_calc.htm (should work, just put in zeros for the stabilizer)

Make sure your all up weight is appropriate for the flight characteristics you want using something like this: http://www.theampeer.org/CWL/reynolds.htm

and then test fly/adjust/repeat until it flies like what you want.

as an example foamboard design that is similar (forward swept flying wing) https://store.flitetest.com/ft-flerken-mkr2/ the big differences are the various aspect ratios of the different parts of the craft, but it is the same general design.