Breeze F3P

Design for a Full Fuse Biplane for F3P/F3AI Competition

In the spirit of free beer and open source these plans are made available under the Creative Commons Attribution-ShareAlike license. Go check out the Breeze F3P thread on RC Groups.

See a video of the Breeze in flight.

Specs

Length: 920 mm
Span: 862 mm
Wing Area: 29.76 dm²
Side Area: 14.28 dm²
Aspect Ratio (S²/A): 4.99
Target Weight: 180g
Wing Loading: 6.0 g/dm²

Plans

Plans and past version; see the plans page

Suggested Equipment

• Axi 2204 or similar 20g-25g motor
• 2s 300mah – 450mah battery
• 3 x 6g servos (BMS 306 or Hitec HS-50)
• 4 channel receiver
• Speed control good for at least 6 amps (e.g. Thunderbird 9)
• 20-25g 2s Lipo battery

Materials Needed

• 3 sheets 3mm Depron (36×27)
• Carbon Rod for Landing gear; 1.5mm
• Light Weight Wheels
• Pull-Pull Control Horns
• Kevlar Thread
• Velcro for mounting batteries
• Heat shrink for aileron pushrods
• CA Hinge Material (for empennage)
• Hinge Tape
• Foam Glue & Thin CA

Design Considerations:

I wanted the parts to be easy to cut by hand since its going to be built from scratch. The number of curves and the total part count was kept to a minimum. The Breeze has an aspect ratio similar to the Donuts-Models biplanes. It has generous side area and large interplane struts for good knife edge performance. Keeping weight below the weight target will, of course, improve performance.

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This entry was posted on June 10th, 2006 and is filed under Articles. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.