Coverage sizing grid ยท 2026-06-15

Choose the hourly area before choosing the fleet.

The payload budget buys 1–2 custom payloads at the current recurring-cost band. That makes the desired one-hour revisit area the key remaining mission decision for RFS-011.

Budget baseline

The current custom path is a focused-zone budget, not a regional-coverage budget.

Budget

AUD 100k (~USD 66k at 0.66 USD/AUD), excluding drone airframes.

Custom payload cost

USD 22k–USD 57k recurring per payload, so the budget buys 1–2 payloads.

At 120 m

One payload covers ~182 ha/h; the optimistic two-payload budget covers ~364 ha/h.

With altitude waiver

One payload covers ~378 ha/h; the optimistic two-payload budget covers ~755 ha/h.

One-hour revisit grid

Required payload count and maximum unit cost by target area.

Target area Payloads @120 m Max unit cost @120 m Fit @120 m Payloads with waiver Max unit cost with waiver Fit with waiver
100 ha (1.0 km2)1USD 66kCustom band fits1USD 66kCustom band fits
250 ha (2.5 km2)2USD 33kOnly low-end custom fits1USD 66kCustom band fits
500 ha (5.0 km2)3USD 22kNeeds cheaper payload or more budget2USD 33kOnly low-end custom fits
750 ha (7.5 km2)5USD 13kNeeds cheaper payload or more budget2USD 33kOnly low-end custom fits
1,000 ha (10.0 km2)6USD 11kNeeds cheaper payload or more budget3USD 22kNeeds cheaper payload or more budget
2,000 ha (20.0 km2)11USD 6kNeeds cheaper payload or more budget6USD 11kNeeds cheaper payload or more budget

The max-unit-cost columns divide the AUD 100k payload budget across the payload count needed for one-hour revisit. If the allowed unit cost falls below the current custom recurring band, the mission needs cheaper COTS/camera-only payloads, more budget, or a looser revisit target.

What the budget buys

Revisit time with one payload and with the optimistic two-payload budget.

Target area One payload @120 m Two payloads @120 m One payload with waiver Two payloads with waiver
100 ha (1.0 km2)33 min16 min16 min8 min
250 ha (2.5 km2)82 min41 min40 min20 min
500 ha (5.0 km2)165 min82 min79 min40 min
750 ha (7.5 km2)247 min124 min119 min60 min
1,000 ha (10.0 km2)330 min165 min159 min79 min
2,000 ha (20.0 km2)660 min330 min318 min159 min

Decision reading

This narrows the stakeholder question to area, altitude, and unit cost.

100 ha

Easy for one custom payload; the budget question is not binding.

500 ha

Needs three payloads at 120 m, or two with the altitude waiver. That makes waiver approval and low-end recurring cost the practical custom path.

1000 ha

Needs three payloads even with the waiver, so the allowed unit cost falls below the current custom floor and pushes the trade back toward cheaper COTS or a trimmed camera-only build.

Beyond 1000 ha

Regional hourly coverage needs more payload budget, substantially cheaper units, or a looser revisit target. It should not be hidden inside the optical prescription.