⚠️ Project Status: Development Ongoing

This aircraft design is currently in the final development phase. While the model has not yet completed its maiden flight, all printed components have been successfully tested and assembled, and the overall structure performs as intended.

Design Goals

• Distinctive and aerodynamic appearance
• Optimized for both standard PLA and LW-PLA printing
• Compatible with widely available and budget-friendly RC electronics
• Easy conversion between powered and pure glider configurations
• Strong airframe with detachable wings for convenient transport
• Adjustable center of gravity, especially in pusher setups
• Lightweight structure focused on efficient flight performance

Concept

The project is based on a closed-wing (box-wing) architecture, chosen both for its unique visual appeal and its potential aerodynamic benefits. By connecting the wing tips, the design aims to reduce wingtip vortex effects and improve overall efficiency while creating a striking and uncommon aircraft profile.

For the airfoil, the Selig S3021 was selected due to its versatility, offering good speed characteristics while remaining suitable for thermal and slope soaring applications.

Modular Configuration

The fuselage has been designed to support both powered and glider versions with minimal modifications. In the pusher configuration, the motor and battery can be removed while maintaining a manageable balance point.

CG adjustments can be made easily:

• If the nose is too heavy, move the motor further aft or lengthen the motor mount.
• If the tail becomes too heavy, increase the length of the forward fuselage section and canopy directly within your slicer.

The geometry of the fuselage split has been designed to maintain smooth aerodynamic transitions after resizing operations.

Specifications

• Wingspan: 870 mm
• Length: 530 mm
• Wing Area (excluding winglets): 19 dm²
• Estimated Flying Weight:
  • Glider: approximately 470 g
  • Powered version: approximately 750 g

Required Hardware

Structural Components:

• 1 × Carbon rod Ø8 mm × 800 mm
• 2 × Carbon rods Ø6 mm × 800 mm
• 8 × M3 nuts
• 8 × M3 × 9 mm screws

RC Electronics:

• 2210 brushless motor (~2000KV) compatible with standard 9/12 mm mounting pattern
• 7×5 propeller
• 2 × 9 g or 12 g servos
• 3S 2000 mAh LiPo battery
• 30 A ESC

Nose Options

Two interchangeable nose sections are available:

• Aerodynamic glider nose for unpowered flight
• FPV nose compatible with common micro FPV cameras (TX02, TX04, and similar models)

The modular approach allows the aircraft to be adapted to different flying styles while keeping assembly simple and efficient.

Enjoy building, printing, and flying!