Dronă Agricolă de Stropire: 10L–30L OEM

Certificatul de Tip CAAC și Reglementările pentru Drone pe Piețele de Export

Agricultural drone sprayers occupy a distinct regulatory category from consumer and commercial drones — they are classified as RPAS (Remotely Piloted Aircraft Systems) operating in agricultural airspace, and the approval framework differs between China and export markets.

CAAC RPAS Type Certificate (China). The Civil Aviation Administration of China issues type certificates for agricultural drones under CCAR-92. All domestically sold agricultural drones must hold a CAAC type certificate for the specific airframe and payload configuration. The type certificate covers airworthiness of the aircraft structure, flight controller redundancy, and failsafe behavior (return-to-home on link loss). A CAAC type certificate is not a market access certification for EU or US markets — it demonstrates Chinese regulatory compliance only.

EU market: EASA category A3 / specific. Agricultural drones spraying chemicals fall under EASA category “specific” (not “open”) because they operate beyond visual line of sight (BVLOS) or over uninvolved persons in agricultural settings. EASA’s Specific category requires a SORA (Specific Operations Risk Assessment) completed by the operator — not the manufacturer. However, the drone must hold CE marking under the EU Drone Regulation (EU 2019/945) for the UAS class category (C3 or C4 for agricultural spray drones). Check whether the Chinese manufacturer has EU 2019/945 CE marking for the specific airframe and maximum takeoff mass (MTOM) — not generic CE marking from an electronics component.

US market: FAA Part 137 + Part 107 waiver. Agricultural aerial application in the US falls under FAA Part 137 (Agricultural Aircraft Operations). Operating a drone for hire in Part 137 requires a commercial pilot’s certificate with an agricultural aircraft operator certificate — these are operator requirements, not manufacturer certifications. The drone itself requires FAA registration and must hold either FAA production approval (rarely granted to Chinese manufacturers) or operate under an FAA exemption. Chinese agricultural drones are generally not FAA production-approved — buyers importing for US commercial use must navigate Part 137 exemption or operate under experimental category.

Australia (CASA) and Brazil (ANAC) are the most tractable export markets for Chinese agricultural drones: CASA has a recognized foreign manufacturer approval pathway, and ANAC has approved several DJI and XAG models under Brazilian RPAS regulations. Confirm with the factory which specific export certifications the drone holds — not just “international certification available.”

Tehnologia Duzei: Atomizor Centrifug vs Ventilator Plat Hidraulic

The nozzle system determines droplet size, coverage uniformity, and drift risk — the three parameters that determine pesticide efficacy and off-target environmental impact.

Centrifugal rotating atomizer. A spinning disc (3,000–12,000 rpm) slings liquid off its edge as a fine mist. Droplet size is controlled by disc rotation speed and liquid flow rate — increasing rotation speed produces smaller droplets (higher VMD at lower rpm = larger drops, lower rpm = smaller drops is counterintuitive; it is actually the liquid flow rate that drives droplet size at a given spin speed). VMD range: 80–150μm at standard operating parameters. Advantages: very low nozzle clogging rate (no small orifice), wide-range droplet size control via speed adjustment, excellent coverage on dense canopies at low volume rates (5–15 L/ha). DJI Agras series use centrifugal atomizers as their primary system. Limitation: more drift-prone than hydraulic nozzles at the fine end of the VMD range — not appropriate for spraying adjacent to sensitive water bodies without a coarser droplet setting.

Hydraulic flat fan nozzle (TeeJet XR / AI induction). Conventional agricultural nozzle operating at 1.5–4.0 bar spray pressure. VMD 100–350μm depending on nozzle size and pressure. Air Induction (AI) nozzles entrain air into droplets, producing larger air-filled drops that are drift-resistant (VMD 250–500μm) — the preferred nozzle type for herbicide applications near water or in windy conditions. Hydraulic nozzles are well-understood by agronomists, compatible with standard nozzle calibration tools (flow meters, nozzle checkers), and replaceable with standard agricultural nozzle supply chains. Limitation: nozzle orifice (<1mm for fine nozzles) is susceptible to clogging with improperly filtered spray solutions or wettable powder formulations.

Which to specify for OEM sourcing. Agricultural markets with precision pesticide application regulations (EU Sustainable Use of Pesticides Directive, California DPR restrictions) increasingly require documented droplet size data (ASABE S572.3 classification) and drift reduction documentation. Hydraulic nozzle systems have an established regulatory acceptance pathway — ASABE S572.3 classification is specific to nozzle type and pressure, and is well-documented. Centrifugal atomizer classification is less standardized globally. For buyers targeting EU or California markets, hydraulic nozzle systems with documented ASABE S572.3 data have a clearer regulatory acceptance path.

GPS RTK, Evitarea Obstacolelor și Planificarea Misiunii

The flight controller and positioning system determine autonomous spraying accuracy and operator workload — the two factors that drive return on investment for commercial agricultural operators.

RTK vs standard GPS accuracy. Standard GPS horizontal accuracy: ±1.5–3.0m (2σ). For agricultural spraying at 4–7m swath width, ±3m positioning error causes 40–75% overlap or gap between adjacent swaths — unacceptable for commercial application. RTK (Real-Time Kinematic) GPS corrects for atmospheric and satellite geometry errors using a ground-based base station transmitting corrections to the aircraft. RTK accuracy: ±2cm horizontal (2σ). At ±2cm with a 5m swath, adjacent swath overlap/gap is ≤1% — commercially acceptable for precise application.

RTK base station requirement. The aircraft RTK receiver requires a fixed base station (a reference receiver at a known location) transmitting RTCM correction data via radio link (typically 900MHz or 2.4GHz link). The base station is either: a dedicated RTK base unit supplied with the drone system, an NTRIP (networked RTK) service connection via cellular network (where coverage exists), or an integration with an existing farm RTK network. Confirm which base station architecture is standard with the factory’s system and what the base station radio range is (typically 3–5km LOS for a drone-integrated base unit).

Terrain-following radar. Agricultural fields are not flat — the drone must maintain constant height above the crop canopy (not above sea level) to maintain consistent nozzle-to-target distance and droplet deposition rate. Terrain-following via a millimeter wave radar altimeter (operating at 24 or 77GHz) measures height above the crop surface in real time and adjusts flight altitude. Accuracy: ±5cm at up to 25m/s flight speed. Confirm the terrain-following radar is independent from the obstacle avoidance radar — some lower-cost systems use a single radar for both functions, reducing performance of both.

Mission planning software. Most Chinese agricultural drone manufacturers bundle a mobile app (iOS / Android) for field boundary mapping, flight path planning, and spray rate setting. Confirm the app supports: offline operation (cellular is not available in all agricultural areas), shapefile import (for field boundaries from farm management software), and variable rate prescription maps (for VRA — variable rate application based on soil or remote sensing data). The DJI Agras app supports all three; smaller Chinese manufacturer apps often support only basic area coverage without VRA.

Gestionarea Bateriei și Operațiunile de Flotă

Agricultural drone spraying is commercially viable only when the operator can maintain continuous field coverage — spray tank refilling and battery swapping are the operational bottlenecks.

Battery cycle life and replacement cost. LiPo 12S batteries for agricultural drones have a rated cycle life of 200–400 cycles to 80% capacity. At 15 minutes of flight per cycle and 8 hours of daily operation, a battery reaches rated cycle life in approximately 80–160 working days. Budget for battery replacement every season in high-utilization commercial operations. Battery replacement cost: $250–600 per pack at 22,000–30,000mAh capacity. A 2-drone fleet operating 8 hours/day typically requires 6–8 battery packs to maintain continuous operation (1 flying, 1 charging, 1 spare rotation).

Rapid charger specification. The charging time per battery determines the minimum battery count for continuous operation. A 30,000mAh 12S pack at C1 charge rate takes 60 minutes. A 6C rapid charger reduces this to 10 minutes but requires a 3kW AC power source and generates significant heat in the battery — reduced to 4C charge rate in ambient temperatures above 35°C to prevent thermal runaway. Confirm the rapid charger included with the system and the recommended field charge rate for the ambient temperature range in the destination market.

Spray solution tank swap. The 10–30L tank system typically uses a quick-release bayonet coupling — tank swap time is 30–60 seconds with a pre-filled backup tank. For maximizing field coverage rate, the bottleneck is usually tank refilling rather than battery swapping (battery swap: 60 seconds; tank refill from 200L mixing barrel: 3–5 minutes). Commercial operators plan routes to align battery swap and tank refill at the same return-to-home point.

Our sourcing service pre-qualifies agricultural drone manufacturers based on CAAC type certificate status, export certification documentation, and after-sales support infrastructure in the destination market.