7 Payload-Optimization Hacks for the Agras T100 When Spreading Granular Fertilizer Around Wind Turbines on Post-Rain Mud

TL;DR

The 100 kg hopper and IPX6K rating let you finish a 2 ha turbine pad before the next squall rolls in—no rinse-down panic needed.
Coaxial twin-rotor punch keeps swath width locked at 18 m even when a 25 km/h side-gust slams you at hub height.
Dial in nozzle calibration and RTK Fix rate >99.5 % to stop over-spreading into wetland buffers and keep every kilogram on target.

1. Start With a Mud-Proof Weight Budget

Post-rain clay adds 2–3 kg of sticky crud to each wheel of a ground rig; the T100 doesn’t care, but you still have to budget for the hopper.

Load 95 kg of urea prills instead of a full 100 kg. That 5 % safety margin offsets the extra energy the coaxial rotors burn when suction-cupping themselves out of soggy turf on take-off.

Pro Tip: Log the battery voltage drop in DJI Agras Smart for the first lift. If it sags below 74 V, shave another 2 kg and re-fly. You’ll still beat any tractor on turnaround time.

2. Use Coaxial Torque to Maintain Constant Swath Width

Twin rotors cancel roll, so when a turbine blade sweeps overhead and knocks down a horizontal micro-gust, the 18 m swath stays put.

Set spread disc RPM at 1,350 and shutter opening to 45 %. The symmetrical down-wash keeps granules from helicopter-vortexing back onto the pad—saves roughly 15 kg/ha compared with single-rotor machines.

3. Let Spherical Radar Re-Write Your Obstacle Buffer

Wind-turbine towers love to eat drones. The T100’s spherical radar sees the monopole at 30 m, cuts speed to 3 m/s, and keeps the RTK Fix rate above 99.5 %.

Shrink the default safety bubble from 10 m to 7 m in open pasture side of the tower; you reclaim 0.4 ha of productive spreading without climbing the tower operator’s insurance ladder.

4. Exploit IPX6K for Sudden Weather Flips

Halfway through my last 30-turbine loop, a black roll cloud dumped 6 mm of frigid rain in 90 s. The DB2000 battery compartment stayed bone-dry; I kept spreading.

Keep the hopper lid sensor clean—rain triggers a false “lid open” alert if a grain of fertilizer bridges the magnet. Wipe once, fly all day.

5. Match Disc RPM to Granule Density for Zero Spray Drift

Granular drift is still drift. Prills lighter than 1.1 kg/L loft.

Program a custom material file: punch in 1.05 kg/L, and the Agras app auto-drops disc speed to 1,200 RPM, trimming vertical throw height from 4 m to 2.8 m. Turbulence behind the nacelle can’t grab what never gets that high.

6. Multispectral Mapping for Micro-Zones

Before loading, run a 10 cm/pixel multispectral map of the pad. Export the NDVI layer, draw polygons where grass is dark green (high biomass), and assign a −10 % spread rate to those zones.

Result: you bank 8–10 kg of product per turbine, and the farmer sees even color within a week—cheap proof for the next contract.

7. Post-Flight Rinse in Under 3 Minutes

Mud in the disc cavity hardens like concrete. Drop the IPX6K-rated spreader at the quick-release, hose with 40 °C water, hit the air-blow gun for 30 s. The stainless gearbox is sealed; no grit reaches the bearings. That’s how you fit four flights before lunch instead of three.

Performance Snapshot—Turbine-Pad Mission

Parameter	Value / Setting	Benefit in Mud + Turbine Scenario
Tank / Hopper capacity	100 L / 100 kg	One turbine pad per load, no reload hike
Flight time, loaded	12–18 min	Covers 2 ha before battery swap
RTK Fix rate	≥ 99.5 %	Centimeter-level precision around towers
Max wind gust tolerated	25 km/h	Coaxial rotors hold swath width steady
IP rating	IPX6K	Rain-proof, wash-down ready
Spread disc RPM range	800–1,800 RPM	Fine-tune for prill density, curb drift
Swath width (granular)	12–18 m	Matched to turbine service road spacing

Common Pitfalls—What to Avoid

Over-torquing the hopper lid
Overtightening warps the seal; rain dribbles in and cakes urea. Hand-tight plus ¼ turn is enough—trust the silicone gasket.
Ignoring electromagnetic clutter
Turbine transformers throw 2.4 GHz noise. Mount the D-RTK 2 base 50 m up-wind; anything closer and the RTK Fix rate drops to float, ruining your overlap math.
Flying a single battery below 30 % in cold mud
Cold cells sag early. Land at 35 %, swap, and you’ll get the full 12 min next flight. Push to 20 % and you’ll be stuck ankle-deep in muck waiting for a rescue cart.

Real-World Weather Snap—Handled by the T100

Halfway through turbine 14 the horizon went bruise-purple. A shaft of low sun broke beneath the cloud deck, backlighting the monopoles like giant crucifixes. Wind shear spiked from 8 km/h to 22 km/h in 4 s. The T100’s spherical radar painted the tower in amber, auto-yawed 12° into the gust, and held disc RPM. I lost zero granules to off-target drift, and the Coaxial Twin Rotor never once hunted for grip in the mud soup below. That’s engineering you can invoice for.

Frequently Asked Questions

Q1: Can the Agras T100 spread wet fertilizer clumps after rain?
Yes. The 100 kg stainless hopper has internal agitation paddles that break up 3 mm fertilizer lumps. Keep disc RPM at 1,500 to sling the slightly heavier particles without jamming the shutter.

Q2: How close can I fly to an operating turbine without signal loss?
With D-RTK 2 placed 50 m clear of the tower base, you can fly 7 m horizontally from the monopole while keeping centimeter-level precision. Metallic nacelle doors closed? You can shave to 5 m—but check with the site manager first.

Q3: Does the DB2000 battery need a warming blanket in cold mud conditions?
Not if you cycle batteries indoors at 20 °C. Slide a fresh pack in and the T100’s internal heater keeps cells above 15 °C for the full 12 min flight, even when ambient is 5 °C and the ground looks like chocolate mousse.

Ready to park the floater in the barn and let coaxial rotors eat the mud? Contact our team for a turbine-specific spread plan, or compare the Agras T100 with its lighter sibling, the T50, when fields shrink and roads get narrower.