Giant Circle Plane

3-Second Blueprint (English)

1. An annular circular wing generates lift like a conventional airfoil by creating a pressure differential across surfaces at an angle of attack.
2. Building the giant RC frame from lightweight balsa ribs mounted onto a bulkhead-reinforced box fuselage kept the massive twin rings at 2.13 kg.
3. Initial hand-launch crashes revealed an overly high motor thrust line pitching the nose down beyond elevator authority, requiring lower mounts.