hef 32 - basic system package


High Eye offers the HEF 32 UAV and all the periphery required for a basic mission operation, in one basic system package. This includes a flight ready HEF 32, Ground Control Station, omni-directional ground antenna, Operations Manual, Maintenance Manual, Illustrated Parts Breakdown, checklists, maintenance frame, tools, transportation box and parts required for the first 200 hours of operation. 


The basic system package can be expanded by several options, which can significantly increase the operational capability of the HEF 32 system. For more information about the available options, click HERE.

The HEF 32 can be used to carry a wide variety of payloads. For more information on available payloads and custom payload integration, click HERE.

HEF 32














HEF 32



The HEF 32 is an unmanned helicopter with a two-blade single rotor. Because of its size, weight and capabilities, it creates a class on its own and brings industrial reliability into the lightweight UAV market for the very first time.


Its strength lies in the fact that it weighs less than 25 kg and it will fit in any small van or estate car without any prior disassembly, whilst still being able to easily outperform all electric competitors. It offers flight times up to 4.5 hours even when carrying modest payloads. It never needs a recharge, which means that except for some short refuelling stops, the mission can always continue.

The system operates fully automatic and through nearly all weather conditions. Several sensors are used to improve safety, the pilot's orientation and to aid his navigational capabilities.

A wide variety of options is available to further increase its operational capabilities. Flexible payload interfaces allow the integration of multiple sensors at once. Manned helicopter aviation finally found its first true competitor.


HEF 32 - 007


The HEF 32 design was created in 3D and 2D CAD and is under control of an extensive Part Data Management System. High Eye outsources the component production to its partners, but keeps the assembly in house. The frame of the helicopter follows a modular layout and is constructed from a mix of carbon fibre and aluminium alloy, whilst the monocoque fuselage, tail boom and landing gear have been made solely out of carbon fibre. All aluminium parts, including the rotor head, tail rotor and transmission, have been surface treated to reduce corrosion whilst operating in maritime environments.


The propulsion is provided by a 32cc two-stroke petrol engine, which drives the rotors via a maintenance-free, industrial quality, hybrid transmission. Fuel is supplied via a large fueltank and a simple gravity-feed system. A brushless alternator provides continuous electrical power to all on-board systems, including the payload. An on-board battery provides power in emergency situations and when the UAV is on the ground, with the engine switched off.


An external connector allows the operator to provide external power, without having to open the system. The entire electrical system is EMI-shielded and thoroughly protected against water ingestion. The entire flight control system is operated by industrial actuators.


A clever combination of well-proven combustion technology, modern lightweight materials and aerodynamic design, give the HEF 32 the kind of performance that one would expect from a high quality industrial product. At the maximum take-off weight, it can safely lift heavy payloads of up to 5 kg, without affecting safety and manoeuvrability.


Naturally, the flight endurance of a helicopter depends on the type of mission. Moving forward at pre-defined speeds can vastly reduce fuel consumptions and increase the endurance even further. When flying at the speed for maximum endurance, the HEF 32 will fly beyond 4.5 hours with a payload of 2 kg, without refuelling. In hover, it will easily fly 3 hours, whilst only using 5 litres of petrol. Of course, the HEF 32 can also fly faster. It is currently limited at 70 knots, which equals 130 km/h. Because of a safe excess of power, it can fly comparatively high and altitudes in excess of 6000 feet offer no problem for the system.

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A multifunctional and clever autopilot serves as the brain of the HEF 32. Following a long cooperation with UAVNavigation, High Eye integrates their autopilot system. It provides all automatic, stabilizing and autonomous functionalities one expects from an industrial autopilot. The HEF 32 can take-off and land fully automatically, without any pilot interference. It can safely navigate through different airspace classes via an unlimited waypoint mode. The operator can also revert to simpler modes and take direct control of the HEF 32 via a basic hover mode. Naturally, the system has been designed to be redundant and the autopilot will always continue to stabilise the HEF 32, even after multiple sensor failures.


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The datalink is supplied by Silvus Technologies and provides a dual MIMO IP link, which is used for the telemetry, flight controls and the payload. The data-link is fully redundant and acts as a self-healing mesh network, allowing data-relaying and multi-location payload streaming. Operations in reduced line-of-sight conditions are made possible through the MIMO capabilities. The system can be provided in many different frequency bands and output strengths can be tuned to local regulatory requirements. With the normal antenna systems, as supplied with the HEF 32, the datalink range exceeds 15 km with live streaming video. A tracking antenna can be supplied as an off-the-shelf upgrade, which can increase the range up to 50 km with moderate bandwidth capabilities.


High Eye believes that a UAV should be safe to operate under nearly all circumstances that operators can run into, throughout the year. Therefore, the HEF 32's avionics and fligh control systems have been designed to be resistant against different grades of precipitation and dust. Overall, the environmental protection rating is IP 67. The HEF 32 is truly an ALL-WEATHER machine.


High Eye went a step further and integrated many additional corrosion protection measures. All metal surfaces, including the transmission, rotor heads, flight controls and frame parts have been surface treated. All fasteners, nuts and bolts have been designed to reduce the chance of contact corrosion. All electrical connectors, seals and flight control actuators are rated for long-lasting operations in saltwater environments. All bearings are protected by rubber seals or have been replaced by industrial plastic friction bearings.


The entire electrical system has been protected against electro-magnetical interference and includes several layers of EMI filtering on all internal power, data and communication lines. This high grade of protection has made the HEF 32 fully compliant to MIL-STD-461F-RS103, meaning that it is able to tolerate field strengths of at least 200 V/m over a very wide range of frequencies. Henceforth, the HEF 32 can be used safely in close proximity to sources of high power radiated energy,  as can be found on naval vessels.



The HEF 32 is supplied with a full set of documentation, including a Quick Reference Handbook, Operations Manual, Maintenance Manual and Illustrated Parts Breakdown. All the documentation has been written according to manned aviation standards. It includes everything from extensive technical documentation to standard operational procedures and emergency checklists.




The maintenance documentation structure is compliant to Annex II AMC to Part-145. This means that all maintenance work can be outsourced to any approved maintenance organisation (AMO). The HEF 32 is subject to 50 hour and annual inspections. The airframe and engine are overhauled at 200 hours. Because HEF 32 parts are much more affordable than parts from manned aviation, many critical parts are quite simply replaced for factory-new parts after 200 hours, instead of having them overhauled, including the engine and induction systems. This provides a truly cost-effective, continuous and safe maintenance solution for international operators.


It is High Eye’s vision that pilots should feel right at home, when flying the HEF 32. The layout of the Ground Control Station follows the same approach to cockpit design and layout as can be found in manned helicopters.


Instead of intimidating new operators, the Ground Control Station feels simply clever and intuitive right from the start. For experienced operators and pilots it is familiar and provides a quick integration into High Eye’s UAV systems. The use of a simple laptop, a robust joystick, a multifunctional kneepad and an easy access flight termination system, all of which have been integrated into a compact and portable system, make the Ground Control Station the ideal companion for a wide variety of missions.


Under normal operations, the Ground Control Station can be powered externally via 230/110 Volt. An integrated back-up battery provides continuous power to all systems in case of emergency. The integral PCB serves as an IP switch and can split incoming payload data to other nearby computers. During flight operations, the joystick serves as the pilot’s main interface for autopilot control. It is used to command the autonomous modes, but can also be used to take over direct control at any time. Two guarded switches provide the possibility of a quick operation of the flight termination system. Since the Ground Control Station has been built-up of only a few individual parts, it is easy to integrate it into existing hardware, like vehicles or containers.



Download the HEF 32 brochure HERE.