Overview
The BB4 Multirotor UAV is a professional platform designed for industrial applications, offering quick setup and efficient operation. It is a collaboration between CHCNAV and DJI, combining advanced geospatial measurement technologies with automated flight control systems.

Specifications
- Design: Quadcopter with carbon fiber structure, modular design for quick assembly (2 minutes).
- Weight: Empty weight of 10.9 kg, maximum payload of 7.1 kg, and maximum takeoff weight of 28.0 kg.
- Dimensions: 110 x 110 x 44 cm.
- Flight Control: Dual DJI A3 system with GNSS navigation and dual redundancy sensors.
- Operating Temperature: -10°C to +40°C.

Performance
- Flight Time: Up to 55 minutes with a 1 kg payload, 40 minutes with a 5 kg payload.
- Range: Operating range up to 5 km with DJI Lightbridge 2.
- Speed: Maximum speed of 14 m/sec, ascent speed of 5 m/sec, descent speed of 3 m/sec.
- Wind Resistance: Up to 13.9 m/sec (level 6).

Payload and Sensors
- Supported Payload: Up to 7 kg, compatible with CHCNAV scanners, DSRL cameras, and multi-spectral cameras.
- Camera Options: CHC AS-C420 and AS-C240 calibrated cameras, LiDAR options include CHC AlphaUniXXX series and Riegl miniVUX.

Software and Operation
- Control Software: Operated via DJI Ground Station Pro for automated missions and data management.
- Remote Controller: Operating frequency of 2.400 GHz to 2.483 GHz, with a maximum transmission distance of 7 km.

Applications
The BB4 UAV is suitable for topographic surveys, construction asset inspections, and mining natural resources, providing high accuracy and efficient data capture.

Contact Information
CHC Navigation has offices in Europe, USA, India, and China, providing global support and services.