Which is cheaper to operate, a multi-rotor or a VTOL fixed-wing?

Per flight hour, usually the multi-rotor — simpler mechanics, cheaper spares, and no launch/recovery system to maintain. Per surveyed square kilometre, often the VTOL fixed-wing, because one sortie covers what takes several multi-rotor sorties with the battery swaps and crew time each swap implies. The right unit of cost is the mission, not the hour.

Do VTOL fixed-wings need a runway?

Not the electric VTOL class. The AT-G07 we supply takes off and lands vertically with a 3 m wingspan and needs only a cleared spot roughly twice its size; it then transitions to efficient fixed-wing cruise. Hybrid VTOLs like the AT-G45 follow the same pattern at 100 kg maximum take-off mass.

How many batteries does a fleet need?

Plan around your turnaround, not your flight time. A 34-minute aircraft with 90-minute recharge needs three battery sets to fly continuously; a 220-minute endurance platform flies a whole shift on one. Battery count is often the largest operating-cost difference between the two classes.

Multi-rotor vs. VTOL Fixed-Wing: Total Cost of Ownership

Sticker prices invite the wrong comparison: a portable multi-rotor at $31,231 against a 3 m electric VTOL at $29,493 looks like a tie, and a 100 kg-payload quad at "price on request" looks like a different universe entirely. Total cost of ownership is where the comparison actually happens, and it rewards the platform that finishes your mission in the fewest sorties, crews and spare-part cycles. This article runs the arithmetic with published numbers from the aircraft we manufacture and supply.

The purchase is the down payment

A professional UAV programme spends across five lines:

Cost line	Multi-rotor	VTOL fixed-wing
Aircraft	Lower for equivalent payload	Higher — two flight regimes in one airframe
Batteries	Many sets (short endurance)	Fewer sets (long endurance)
Crew per sortie	Pilot + observer, frequent swaps	Pilot + observer, fewer sorties
Transport/logistics	One case, hand-launch	Larger vehicle for 3 m+ wingspan
Training & transitions	Simple	VTOL transition training matters

The endurance column drives everything. The AT-ELF multi-rotor specifies 34 minutes at 1.4 kg (15 minutes at max 2.4 kg take-off). The AT-G07 electric VTOL specifies 220 minutes with 1 kg payload, 1.5 hours at 7 kg. For a mapping day, that is the difference between roughly seven battery-swap cycles and one or two sorties — and each swap is crew time, landing-site time, and one more battery in the case.

Worked comparison: 40 km powerline corridor

Take a routine inspection task: a 40 km transmission corridor at 80 m AGL, one zoom pod, normal weather.

Multi-rotor (AT-ELF class): 20 km cruise range at empty weight means the corridor is at least two sorties with a repositioned ground station, plus swap time. Call it 3 flights, 2 battery cycles each, one full day with a two-person crew.
VTOL fixed-wing (AT-G07 class): 220 minutes endurance at 1 kg covers the corridor in a single sortie at 20 m/s cruise. One flight, one battery set, half a day.

The aircraft price gap ($31,231 vs $29,493 — the VTOL is cheaper here, which surprises buyers) is noise next to a saved crew-day per mission. Multiply by 40 inspection days a year and the airframe choice is decided by operating rhythm, not purchase order.

Now invert it: the same corridor with a 6 kg dual-sensor pod. The AT-ELF's rated payload is 800 g (max 1,000 g) — it cannot carry the mission at all. The AT-G07 carries 7 kg. The comparison was never between two aircraft; it was between a mission and a specification sheet.

Where multi-rotors win outright

Three honest cases keep multi-rotors in the fleet:

Hover-and-stare work. Structure close-ins, confined-site inspection, anything requiring a stationary camera for minutes. Fixed-wing forward flight cannot do this; the AT-ELF's direct-drive rotors (running at 30–50% of comparable rotor speeds, for low acoustic signature) are built for it.
Deployability. Folded under 100 × 100 × 470 mm, hand-launched, IPX3, −20 to +60 °C — the ELF goes where a 3 m wingspan cannot fit. Emergency response and maritime work from small boats live here.
Heavy lift today. When the payload is 100 kg, neither of the above applies and you buy a MT100 quad — 200 kg maximum take-off mass, 10 km control range, configured per build. Logistics does not care about elegance; it cares about the lift.

Where VTOL fixed-wing wins

Everything with area and time: mapping, survey, corridor inspection, long-endurance relay, search patterns. The hybrid tier extends the claim upward — the AT-G45 specifies 45 kg payload, 5 hours endurance, 5,000 m practical ceiling and 2.5 L/h fuel consumption at 26 m/s cruise. A multi-rotor fleet carrying 45 kg for five hours does not exist at any sane price; the VTOL does it with one airframe and a fuel tank.

The procurement trap is buying the VTOL for missions that end in a hover, or the multi-rotor for missions that end in a 60 km flight line. Both mistakes show up as a second aircraft purchase twelve months later.

The numbers that decide it

Before requesting quotations, write down four figures:

Mission radius or corridor length (drives endurance, and endurance drives battery count)
Payload mass including mount (drives class; check the payload-at-endurance pair, not the maxima)
Sorties per day (drives crew cost, the largest line over a year)
Launch environment (drives the multi-rotor/VTOL question directly — no runway needed for either, but space and transport differ)

Our catalogue prices every complete aircraft per SET with 14-day written quotations; the VTOL category and multi-rotor category list published specs model by model, and the mapping & survey solution page walks the sortie-planning side. Send the four numbers and we will price the fleet, not just the aircraft — spares, battery sets and the link that covers the radius included.