VK V9-AG Agricultural Spraying Flight Controller (4-24S)

VK's V9-AG is a flight controller built for agricultural spraying multirotors, split into a flight management unit (FMU) and a power management unit (PMU). It handles navigation, spray-system control and the power system from one autopilot, running VK's own firmware rather than an open-source stack.

Key features

• Industrial IMU rated for −25 to 60 °C field conditions, with control algorithms that cope with heavily vibrating spray airframes
• PMU accepts 16–100 V and protects against over-voltage and over-current
• GPS, BeiDou and GLONASS reception with a dual GNSS + RTK positioning system and dual-compass support
• Spray control for up to 4 water pumps, dual flowmeters and dual level meters
• Drives the power system over PWM or CAN signals for stronger interference resistance
• Manual, A-B point, route and orchard operating modes; stores up to 50 flight logs

Specifications

• Power supply: 16–100 V (4S–24S)
• FMU size: 73 × 46 × 18.5 mm
• PMU size: 88 × 44 × 15.5 mm
• PMU weight: 80 g
• Operating temperature: −25 to 60 °C
• Positioning accuracy, GNSS: ±1 m horizontal, ±0.5 m vertical
• Positioning accuracy, RTK: ±0.1 m horizontal and vertical
• Route accuracy: ≤50 cm
• Max climb/descent rate: 3 m/s
• Max ground speed: 10 m/s
• Max tilt angle: 18°
• Wind resistance: up to level 6
• Flight logs: up to 50

The ±0.1 m figure needs an RTK module and a correction source; on GNSS alone expect around ±1 m horizontally, which is enough for A-B and manual spraying but tighter routes benefit from RTK.