EXSTOL-LR

A Versatile Motorized Platform for Support and Assistance

Danielson Group and Aero Concept Engineering present the motorized platform “ExSTOL-LR” (Extreme Short Take-Off and Landing – Long Range).

Designed and manufactured in Magny-Cours, this innovative drone stands out with its unique design and performance. Thanks to its ultra-short take-off and landing capabilities (less than 100m DF15), it offers great flexibility and meets the needs of many missions typically carried out by helicopters.

The ExSTOL-LR is a MALE (Medium Altitude Long Endurance) flying platform that combines autonomy and performance.

See the technical specifications

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drone moteur uav engine danielson aircraft system das flight tests

Short Take-Off

With a maximum take-off weight (MTOW) of 1050 kg and a compact wingspan of 8 meters, the ExSTOL-LR is capable of taking off in just 98 meters DF15 (meaning it can clear a 15-meter-high obstacle located 98 meters from the take-off point).

Thanks to its performance, the ExSTOL-LR can take off from a Mistral-class helicopter carrier, departmental roads, unprepared fields, or even from the Stade de France, with the stadium providing enough length for it to clear the stands.

trident diesel Engine

Powered by two 100 hp Trident engines developed by Danielson Aircraft Systems, the ExSTOL-LR adapts to all environments, whether land-based or maritime. Designed to meet the most demanding operational requirements, the Trident engine runs on heavy fuels (Jet A1, etc.) and has already accumulated over 12,000 flight hours in real-world conditions. Its low fuel consumption enhances mission endurance while reducing operating costs.

A hybrid version will offer increased stealth, while further minimizing the drone’s energy consumption and carbon footprint.

drone moteur uav engine danielson aircraft system das maintenance repair overhaul mro

ENDURANCE for Extended Missions

Thanks to its advanced aerodynamic performance and Trident engines, the ExSTOL-LR is suited for a wide range of missions with an extended operational range. It can cover up to 2,900 km with a 250 kg payload over 20 hours of flight, reach 5,400 km over 52 hours with a reduced payload of 50 kg, or perform a 10-hour, 1,000 km mission while carrying up to 300 kg of payload.

A Foldable and Adaptable aircraft

From the outset, the ExSTOL-LR was designed for practical use, with simplified transport and storage in mind.
Its foldable design allows for easy transport by truck or A400M aircraft. Optimized storage in stackable containers further simplifies logistics.
Its central pod can be adapted to different mission profiles:
surveillance, equipment transport, emergency operation support…

a Dual-Use CONCEPT

While the current geopolitical context highlights its potential for armed forces, the ExSTOL-LR remains a dual-purpose aircraft, also designed for civil security missions.

Its rapid deployment capabilities, ease of operation, and robustness make it an ideal asset for victim search operations at sea or in the mountains, coastal surveillance, and forest fire detection and suppression.

The hybrid engine can also be deployed on other civilian platforms aimed at decarbonization goals by 2030.

Meet Us at

the Paris Air Show

For the first time, a 40%-scale flying model will be showcased at the Paris Air Show from June 16 to 22 on the joint Danielson Aircraft Systems/ACE stand in the Bourgogne Franche-Comté pavilion.

Danielson Aircraft Systems will also present its Trident engine in 100 hp, 140 hp, and 200 hp versions, while ACE will offer demonstrations of its ACE of Aircraft software (an aerodynamic optimization tool dedicated to light aviation and drones).