The plan is to make a simple model to finish on the end of November or in beginning of December. I choose this flying wing because it's easy to build and it flies great. Last weekend I couldn't fly my scale planes because of windy season, so I think flying wing will do fine on windy condition. Also I want to fly it with FPV setup because I haven't fly with FPV for quite long time since my Sky Arrow crashed. Actually I want to just release the plans for Berkik 2, but the files is on my old PC hard drive, so I remodeled it in Blender. I change some of the segment joints, make it bigger from 1200mm to 1300mm because I will build it with 6mm depron/ foam instead of 3mm, which is originally Berkik 2 material. Some people accused me for copying someone else's design when I post the photo of Berkik 3 on Facebook. That's not true, if you look closely it's a different beast. Berkik 3 (2021) is a modified version of Berkik 2 (2016) and developed from Berkik 1 (2014) you can search it on KZfaq and see my old videos. My Berkik flying wing was not inspired by any commercial or homemade flying wing designs, it was evolved from the first version which is inspired by Boeing X48B Blended Wing Body design. Oh I almost forgot and I didn't mention it on the video, Berkik is a type of bird, forest snipe or Chinese snipe. And one more thing, I will report the progress for Boeing 747 project in the end of each episode like this. Thank you and enjoy the plans.
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You can download the plans on the link below :
A4 Plans : paper-replika.com/RCplans/PR_...
A0 Plans : paper-replika.com/RCplans/PR_...
A3 Decal : paper-replika.com/RCplans/PR_...
Build instructions :
not yet available (web maintenance)
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Specs :
1. Wingspan 1300mm / 51.2 inches
2. Flying weight : 700 grams/ 67.4 oz
3. Wing loading :19.2 gram/dm2 - 6.3 oz/sq.ft.
4. Wing cube loading : 3.2 (Glider = below 4)
5. Wing Area : 36.54 dm2 / 566 sq.in.
6. CG : 26 cm / 10.2 inch from LE or right on the wing break
Electronics
Any setup (motor,esc,battery) with 5-9 inch prop
Tested with :
- Turnigy 2826 2200kv motor
- Lipo Battery 3S 2200mah 95C
- 2 x 9 gram metal gear servos (micro servo) - amzn.to/3A1fyti
- Prop 5x5x3
Materials :
1. 5mm Foamboard/ Depron/ Polyfoam
2. 3mm Plywood
3. 0.2mm Mica Plastic / Paper card
4. hot glue, UHU glue, CA glue
5. laminating film 32 micron - amzn.to/2XcNghb
Tools :
1. Hot glue gun amzn.to/3BXwfGs
2. Heat gun amzn.to/3lawF5H
3. Covering iron amzn.to/3k2kM2s