Folded Micro Quadcopter

Design a compact deployable micro UAV for a CanSat system. Act as a mechanical engineer specializing in micro UAVs and folding drone mechanisms. Output a CAD-ready, 3D-printable engineering prototype (not decorative, not sci-fi). The drone is stored inside a CanSat (Ø68mm × 124mm). CRITICAL CONSTRAINT: When fully folded, the entire drone MUST fit inside a 63mm diameter sphere. This includes frame, arms, motors, propellers, battery, FC, wiring, and mechanisms. No part may exceed this volume. If any constraint conflicts, the 63mm folded sphere constraint has absolute priority. Fixed components: FC: Happymodel SuperX ELRS V2.1 AIO 5-in-1 (1S, 25.5×25.5mm, integrated 4-in-1 ESC, ELRS, VTX) Battery: BETAFPV LAVA II 1S 280mAh 95C LiHV (54×10×6mm, 6.8g, 4.35V max) Motors: 0803-class 22000KV 1S brushless motors Do NOT assume a quadcopter. Choose motor count, propeller count, and layout based on best engineering solution. Requirements: Propellers must fit inside 63mm sphere when folded Central body must house FC and battery near center of gravity Reserve internal space for wiring and CanSat electronics Minimize mass while maintaining structural strength Ensure realistic flight with 1S system Ensure reliable deployment after CanSat release Deployment: Design a simple, robust mechanism (folding/rotating/telescoping/hybrid). Prioritize reliability over complexity. Priorities: 63mm folded sphere constraint (absolute) Flight feasibility Deployment reliability Low mass + strength Manufacturability (3D printing) CAD clarity No decorative or futuristic design. Only realistic mechanical engineering structure.

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