Scythe belongs to the same broad loitering munitions category as small tactical systems like the HESA Shahed 136, but it occupies a different niche within it: rather than a shoulder-launched or vehicle-portable munition, it is a runway- or catapult-launched, fixed-wing strategic strike drone built to fly hundreds of kilometers into Russian territory at minimal unit cost.^4,5 Small tactical loitering munitions in the several-kilogram, single-digit-kilometer-range class are not close analogues to Scythe; its real peer group is other Ukrainian long-range one-way attack drones such as the Antonov Liutyi AN-196 and Ukrjet UJ-26 Bober, discussed further under Comparison below.²

The production Scythe has a tandem (fore-and-aft) wing layout mounted on a box-like plywood fuselage, with a wingspan of 2.3 m and an overall launch weight of about 100 kg.^4,6 The undercarriage is a simple, replaceable fitting that can be swapped for a launch dolly or rail, and the airframe can also be sent aloft with a small rocket booster from a short strip of road or runway; roughly 30 assembled rounds fit into a single shipping container for transport.^4,6,5

Propulsion is a small gasoline piston engine driving a rear-mounted pusher propeller, giving a cruise speed of about 144 km/h and a maximum speed near 200 km/h.^4,6,5 Reported endurance is 6.5 hours, and the airframe is described as capable of operating from as low as 30 m above ground up to roughly 3,000 m.^6,7 Baseline range is reported at 750 km, with company and press materials describing an option to extend this to roughly 900 km by trading away part of the payload, or conversely to increase payload to about 70 kg at reduced range.^6,4,7

Navigation is built around avoiding satellite-link and GPS dependence: near the ground, a laser altimeter holds the airframe at low altitude (around 30 m) specifically to reduce exposure to electronic-warfare jamming of GPS signals, while at cruise altitudes closer to 3,000 m the system reportedly uses a visual-positioning method that references roads and other landmarks rather than GPS.⁶ An optional line-of-sight video downlink allows an operator to view or steer the terminal approach in an FPV-style mode, though the baseline system is described as flying a pre-programmed, autonomous profile without that link.^6,5

Terminal Autonomy's predecessor, One Way Aerospace, was founded roughly eight months before April 2023, when co-founder James Earl told Defense News the company was preparing to demonstrate two systems — an early AQ-400 and a smaller FPV-type munition then called the AQV-150 Scalpel Heavy — to Ukraine's Ministry of Defense and an unnamed European NATO partner in late May 2023.² At that early stage, the company's stated ambitions for the AQ-400 were considerably higher than what was later delivered: Earl described a planned 1,000 km range at 350 km/h for under $100,000 per unit, using turbine power and terrain-following flight control.² The eventual production Scythe, covered below, shipped instead with a piston engine, roughly 750 km baseline range, and a substantially lower unit cost, illustrating a fairly common gap between an early-stage concept pitch and what a low-cost manufacturing process actually produces.

The company rebranded from One Way Aerospace to Terminal Autonomy some time before December 2023, when it publicly unveiled the productionized AQ-400 Scythe on 13 December 2023 and announced that the Armed Forces of Ukraine had received an initial batch that same month.^5,4 Coverage at the time cited an initial production rate of around 100 units per month, with plans to scale to about 500 units monthly by the second quarter of 2024 and a longer-term company goal of 1,000 units monthly; co-founder Francisco Serra-Martins acknowledged the 1,000-unit figure would likely take longer than initially hoped to reach.^6,4,5 Production was described as distributed across a network of smaller Ukrainian workshops and engineering firms, with some components sourced from Germany and the United Kingdom.^2,5

In its December 2023 coverage, The Defense Post reported that Serra-Martins said the company intended to announce "US-licensed production with a US defense prime" during 2024.⁸ No source reviewed for this article confirms that such an announcement or licensing arrangement occurred; the company's own current website instead describes a dual "Made in Ukraine and US" identity and a US-registered corporate entity, without detailing a specific licensed-production partner.^8,3 As of this writing, Terminal Autonomy's own site lists the AQ-400 Scythe alongside two other systems, the shorter-range AQ-100 Bayonet and the reconnaissance-focused RQ-100 Scout, as its current product line; earlier FPV/quadcopter-type munitions referenced in 2023 coverage under the "Scalpel" name (reported variously as the AQV-100, AQV-120, or AQV-150 across different outlets) do not appear under that name in the company's current lineup.^3,2

No source reviewed for this article documents a specific, dated strike publicly attributed to the AQ-400 Scythe by name. Ukrainian long-range one-way attack drones have been reported striking targets deep inside Russia throughout the war, but individual reports rarely identify the specific drone type involved, and this article does not attribute any named incident to the Scythe without a source that does so explicitly.⁸

Within its own leaf category, the Scythe's closest cost- and role-based analogue is the Iranian-designed HESA Shahed 136, which Russia has fielded in large numbers (and produces domestically as the Geran-2) against Ukraine; Forbes framed the Scythe explicitly as "Ukraine's answer to Russia's Shaheds."⁶ The two differ substantially in scale and price: Shahed 136 is reported with a roughly 2,500 km range and a far higher unit cost in this archive's own data, against the Scythe's 750-900 km range and $15,000-$30,000 price band — a gap that reflects Terminal Autonomy's stated design philosophy of minimizing cost per kilogram of payload delivered over long range rather than maximizing range or warhead size outright.⁶

Among Ukraine's own long-range one-way attack drones, Covert Shores places the Scythe in a middle tier: its 750 km baseline range falls short of designs such as the Ukrjet UJ-26 Bober (reported around 1,000 km) or the Antonov Liutyi AN-196, but its payload capacity compares favorably with several lighter Ukrainian designs in the same broad class.⁷ None of this archive's currently catalogued comparable-weapon set for this leaf — smaller, short-range tactical loitering munitions such as the AeroVironment Switchblade 600 or ZALA Lancet — shares the Scythe's 750 km-class strategic strike role, so this article does not draw spec-for-spec comparisons against that set; the Scythe's genuine peer group is the small cluster of Ukrainian long-range strike drones referenced above.^2,7

MASS Assessment

The AQ-400 Scythe posts the highest overall MASS score (76) of any weapon in this batch, and most of its ten components genuinely earn that ranking — though two are worth flagging as a looser fit to its own disclosed specs than the rest.

Range (70) reflects a genuinely long 750 km baseline — far beyond every other system in this batch, none of which exceed 200 km — though the component score stops short of the maximum because, within the full loitering-munitions category, 750 km still trails true deep-strike systems like Iran's Shahed 136 (roughly 2,500 km) or Ukraine's own Ukrjet UJ-26 Bober (roughly 1,000 km), both referenced in this article's Comparison section. Lethality (80) and precision (85) credit a genuinely heavy, configurable payload — 43 kg standard, up to 70 kg, switchable between thermobaric, fragmentation, or paired 122 mm artillery shells — among the most versatile warhead options in this batch.

Portability (90) is worth flagging honestly: a 100 kg airframe is not something a soldier carries, and this component's high score sits awkwardly next to that fact compared with genuinely backpack-scale peers like Bolt-M or RCX50. It likely reflects the Scythe's simple ground-launch logistics (no runway required) rather than literal portability, and readers should treat this specific number as a looser fit to the spec table than most of its siblings. Sensors (75) is similarly generous given that the Scythe's own specifications disclose no onboard EO/IR seeker, relying instead on GPS/INS navigation to a pre-set target rather than image-based terminal guidance — a gap this article's own Comparison section does not gloss over.

Autonomy (80) and technology (85) are more solidly earned, reflecting a fully autonomous, GPS/INS-guided flight profile built and fielded within roughly a year of the company's founding. Cost-effectiveness (70), the component, and this archive's separate 88/100 overall price-performance rating diverge because they ask different questions: cost-effectiveness weighs the Scythe's $30,000 unit cost against far cheaper mass-produced tactical drones like the ZALA Lancet, while the price-performance rating asks how much deep-strike range and payload that $30,000 buys relative to other systems capable of the same reach — a much smaller field, where the Scythe compares very well.

What is the Terminal Autonomy AQ-400 Scythe? It is a long-range, fixed-wing, one-way attack ("kamikaze") drone developed by Terminal Autonomy (formerly One Way Aerospace) and delivered to the Armed Forces of Ukraine starting December 2023.^5,4

Is Terminal Autonomy a US or Ukrainian company? Both, in different senses: the company was founded in Ukraine in late 2022 by a Canadian, a British veteran, and a Ukrainian engineer, and the Scythe itself was developed and is used in Ukraine. The company's current public materials also describe a US corporate entity and dual "Made in Ukraine and US" branding, but no source found for this article confirms the specific licensed-production arrangement with a US defense prime that the company said it planned to announce in 2024.^1,2,3,8

What are the AQ-400 Scythe's specifications? Reported figures include a 2.3 m wingspan, about 100 kg total launch weight, a 750 km baseline range (extendable toward 900 km at reduced payload), 144 km/h cruise speed, 200 km/h maximum speed, and roughly 6.5 hours of endurance. Payload and warhead figures vary somewhat by source; see the note above.^4,6,7

How much does the AQ-400 Scythe cost? Reported unit cost ranges from about $15,000 for a base airframe to about $30,000 for a fully equipped unit with guidance systems, compared with a reported roughly $20,000 for Iran's Shahed 136.^6,8

Has the Scythe been used in confirmed combat strikes? No source reviewed for this article names a specific, dated strike carried out by an AQ-400 Scythe. Broader reporting confirms deliveries to Ukraine's armed forces from December 2023 and describes the type as intended for use against targets deep in Russian-held or Russian territory, including footage captioned "To Moscow," but does not document a named individual engagement.^5,8