Whether you need precise data for mapping, robust surveillance capabilities, or the flexibility to adapt to new challenges, the ElevonX Sierra™ VTOL is the aerial solution that delivers beyond expectations.
This fixed-wing, electric vertical take-off and landing (VTOL) UAV offers an unparalleled combination of long-endurance flight, exceptional payload capacity, and a minimal operational footprint, making it the ideal solution for a wide range of applications, from surveying and mapping to agriculture and surveillance. This adaptability gives operators the competitive edge they need in the fast-evolving market of UAS services.
MAIN FEATURES
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3 m wingspan
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Up to 3 kg of useful payload (optimum 1,5 kg for 1,5-hour endurance)
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Up to 2.5 hours of flight time with lightweight payloads
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Cruise speed up to 20 m/s
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13.5 kg maximum take-off mass
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Wind tolerance up to 8 m/s (take-off and landing), up to 17 m/s (in-flight)
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Up to 3000 m service ceiling
(special edition up to 6.500 m)
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Up to 30 km video and control
link distance
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Starlink
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Parachute
The drone, when stored in its case, fits into any personal vehicle. The assembly is straightforward and takes approximately five minutes. It can be done by one person, but two people are recommended for ease of the task.
DESIGN
The ElevonX Sierra™ aircraft stands out in its class for its exceptional aerodynamic design, the result of meticulous engineering, combining computer-aided design (CAD) with computational fluid dynamics (CFD) to optimize its shape for flight efficiency and stability.
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Sierra™ was developed using a design tool created by AFormX, an aviation technology firm specializing in simulation delivery for major OEMs. Our collaboration with the University of Maribor, which contributed its High-Performance Computing (HPC) resources, was instrumental too.
This partnership allowed our design team to delve into a broader range of structural designs at the outset of the project. It also facilitated the early-stage exploration, leading to the optimization and reduction of structural weight. One of the greatest advantages of CAD simulations is their ability to yield data reflective of real-world scenarios.
These simulations offer insights into potential structural issues and points of failure, enabling a proactive approach to modifications, early detection of problems, and significantly reducing the hours needed for wind tunnel testing.
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Lowest drag coefficient in class
ElevonX Sierra™ VTOL is engineered for top-tier aerodynamic efficiency. Its design, optimized with CAD and CFD, ensures stable and efficient flight. The lightweight composite structure, combined with CNC-machined molds, guarantees precision and durability.
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Modular design and optimized portability
The ElevonX Sierra™ VTOL adapts to your needs with a modular design that allows quick payload changes—switch from an orthophoto mission to a multispectral survey in no time. Its compact case fits in a personal vehicle, and assembly is simple—manageable by one person, though two are recommended.
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IP55 ingress protection
The ElevonX Sierra™ VTOL operates even in light rain. While sensors require care, its motors are waterproof, dust-resistant, and coated for pesticide protection—making it ideal for agricultural and other demanding applications.
Full UAVCAN integration
UAVCAN is a protocol providing a highly reliable communication application via the CAN bus. Making communication within drones more resistant to interferences. Ground crew can also obtain more data from the drone in less time, thus providing more accurate aircraft control. The increased data flow permeability also allows for the reception of information regarding the operation of individual critical drone systems. Consequently, the operator receives real-time feedback on the functioning of servos, pitot tubes, rotors, etc. All this enables the operator to adequately respond to any potential operational errors.
Custom fully redundant carrier board with integrated power supply
We proudly present a new Carrier Board, designed and manufactured by ElevonX. The autopilot and all other electronics are all on a single secure circuit board. The power supply unit is double redundant in case of emergency.
Cable harnesses
High-quality harnesses are made in-house and are customized to meet any specification. The wiring is secured against vibrations, abrasions, and moisture. Integrated navigation lights (optional) Designed for the drone to be visually detectable despite various weather conditions. These lights can be deactivated if the mission necessitates stealth operations.
Structurally optimized hull
Our hull is made in one piece, which means we get a structurally stronger body, a kind of monocoque, because the entire hull is made at once and the prepreg is cured all at once. If made from two pieces, the joint is always the weakest part while there’s a chance that the joint doesn’t bond well and fails even when laminated. Mechanically and chemically it’s never as strong as if the entire resin is cured at once.
Prepreg (pre-impregnated) composite technology
Prepreg material is a composite of fabric and uncured resin, pre-impregnated to form a laminate. It’s engineered with a precise fabric-to-resin ratio, ensuring consistent properties in the cured composite, such as Ultimate Tensile Strength (UTS) and Modulus (the relationship between Applied Stress and Material Strain). This precise ratio mitigates the variability often seen in traditional hand layups, which can alter the final properties of the composite.
Optimization in composites
The best method to achieve the lightest components is through the use of pre-impregnated fabrics, or prepregs. These materials come with resin already applied to the fibers, ensuring optimal material properties. The precise fiber-to-resin ratio in prepregs leads to superior products, far surpassing those produced by traditional wet layup or infusion methods in consistency and quality. With prepregs, the design’s accuracy in terms of weight and repeatability is guaranteed to match the final product. Manufacturers provide detailed prepreg data, including cured ply density, allowing for accurate weight estimates of the final component before cutting begins. In contrast, achieving precise weight specifications with Wet Layups and Infusion processes is uncertain, often depending on various factors, which means potential weight savings are undetermined until the final parts are produced.
Payload bay dimensions: 250 x 110 x 110 mm.
Orthophoto
PhaseOne P5 128MP, high resolution, medium format professional mapping camera
Sony ILX-LR1 61MP full-frame mapping Camera.
Multispectral photo
Micasense RedEdge / Altum Multispectral, stabilized multi-sensor surveillance gimbals.
Gimbal stabilized cameras
Edge Authonomy camera e95.
Atmolab REX Mini Mk2 With cameras REX 120 EO 55X and REX 120 IR 50 mm.
Nextvision (all models).
Lidar
YellowScan Mapper+
Flight controller with high-performance H7 processor and power supply redundancy
H7 has a Cortex M7 with double-precision (DP) FPU, 400 MHz CPU, A Cortex M4 running at 200 MHz, 2 MB of Flash, and 1 MB RAM, this Dual core architecture provides high performance and stable solution for flight. Fully ArduPilot and PX4 supported.
Situational awareness by integrated ADS-B
A 1090 MHz customized ADS-B receiver from uAvionix has been integrated into the ADS-B carrier board. UAVs equipped with the ADS-B carrier board can receive the altitude and location of commercial manned aircraft within the range of Cube. Using the Advanced Auto avoidance features within autopilot, ADS-B assists in keeping our skies safe. The system can also be upgraded with the ADS-B IN/OUT solution to report the drone’s position.
New sensors on upgraded IMU
A real-time triple redundant IMU system on the flight controller provides backups if errors occur, enhancing safety and reliability. Autopilot sports upgrade Dual ICM42688, and the all-new ICM45686 Balanced Gyro.
Temperature controlled and vibration isolated IMU
Sensors in autopilot are vibration-isolated and temperature controlled. With heating sensors to temperatures above 50°C, we can get stable sensor outputs through the whole operating temperature range (-15 °C to + 45°C).
High Precision Dual-band RTK Navigation GNSS
The system is equipped with the u-blox NEO-F9P L1/L5 RTK Multi Constellation GNSS module, which provides the fastest lock times and reliable centimeter-level navigation. Built-in dualcore 480 MHz/240 MHz ARM7/ARM7 MPU. Combination of our most accurate magnetometer yet and precision of 6 degrees of movement IMU has better performance in various applications.
RELIABILITY & SAFETY
Autopilot with triple redundancy on all major sensors
A real-time triple redundant IMU system on the flight controller provides backups if errors occur, enhancing safety and reliability. Autopilot sports upgrade Dual ICM42688, and the all-new ICM45686 Balanced Gyro.
Integrated pyro ballistic parachute
Protect your expensive sensors and airframe in case if something goes wrong big time. All our systems are equipped with certified parachutes from Galaxy GBS. Fast opening of the emergency parachute by using a pyro generator in time less than one second after system activation/similar system to an airbag in a car.
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With its exceptional design, safety features, and operational flexibility, the Sierra™ is set to revolutionize the UAV industry and become an indispensable tool for a wide range of applications.
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Mission: Madagascar Collaboration with UNFPA
Using modern technology to address critical humanitarian challenges.