HelixHold Drone Net
HelixHold Drone Net combines high-performance netting, site-specific steel frames and screw pile foundations into one passive C-UAS system. Foundation points can be installed during normal operations, so the site is ready when protection is needed.
Built for critical infrastructure operators, defence organisations and the security professionals responsible for exposed high-value assets.
Prepared in advance. Ready when needed.
Preliminary site information is sufficient for an initial technical review.
The protection level is defined through project-specific engineering, the protected asset and the agreed threat scenario.
Category 3–4
The base system is dimensioned for Category 3–4 UAV impact.
Category 5
Category 5 protection can be specified for the agreed threat scenario.
Ballistic-rated
Ballistic-rated protection can be specified as part of the complete system.
Detailed classification criteria, design assumptions and supporting technical data are available for qualified projects under NDA.
Each layout is built around one asset and the space available around it.

Substations, transformers and energy storage sites.

Tanks, loading areas and exposed storage assets.

Outdoor plant, ports, terminals and logistics yards.

Depots, equipment in the open, water, communications and emergency services.
Data centresRailChemical plantsMiningGovernment storage
The asset, the threat, and how the foundations, frame and netting go up around it.
Detection and active countermeasures reduce the risk of a UAV reaching the asset. A physical barrier adds a continuously available final layer around the protected zone.
The impact may be local. The consequences are not.
Detection and interception reduce the chance of contact. A physical layer addresses what happens if contact still occurs.
Active systems are not present at every site, at all times.
What is hit is often built to order and slow to replace.
Netting, frame, foundations and design support are defined as one project scope, with the interfaces between them agreed.
The below-ground work is done while the site is running normally, so deployment starts from a prepared site.
A physical layer keeps working without electricity, software or radio frequency availability.
Foundations, frame and netting are delivered as one package, with the interfaces between them defined from the start.

The impact-rated physical barrier, specified against the agreed threat assumption.
Site-specific structure around the protected asset.
Below-ground anchoring points prepared for the frame.
Technical data and project-specific support.
The scope is defined project by project, so responsibilities and interfaces are clear.

Asset, layout, ground and risk profile are assessed.
Screw pile points installed in advance, during normal operations.
Frame and netting engineered, manufactured, delivered and stored.
When the threat level rises, the essential preparation is already in place.
Deployment starts from readiness. Not from zero.
Foundation points can go in during normal operations, including through asphalt. Where the site and connection detail allow it, they can be capped at ground level or hidden just beneath the surface.
The same points carry wind load, net tension and impact into the ground.
Concept illustration
Concept illustration
The base system is dimensioned for Category 3–4 UAV impact. Category 5 and ballistic-rated options are specified separately. The final structure follows the protected asset, the threat profile, impact energy, stand-off distance, frame geometry and ground conditions.
Detailed classification criteria, design assumptions and supporting technical data are available for qualified projects under NDA.
Vehicles, aircraft and larger open zones.
Transformers, storage units and fuel areas.
Complex sites and irregular footprints.
What has to be decided, and what a first technical review actually needs.
A written plan may identify the need for protection. The site still has to be made ready.
HelixHold is built by Paalupiste. The foundation experience is Paalupiste’s own, the netting experience belongs to the specialists who supply that part.
HelixHold brings them together, and the complete system is engineered and supplied from Finland.

These figures describe the components and the companies behind them. They are not a record of installed HelixHold systems.
EN 1090 covers steel fabrication. ISO 9001 and ISO 14001 are management system certifications. Neither is a performance rating for the protection system.
Inquiry
Approximate information is enough, and only the first step is needed to make contact.
We will identify the next technical details required.
Thank you. Your enquiry has been sent. We will come back with an initial technical review. A copy has gone to info@helixhold.com.
If you have drawings or detailed asset information, please wait for our reply. We will agree a secure channel before anything sensitive is exchanged.
The message could not be sent. Your answers are still in the form and nothing has been lost. Use one of the routes below, or try again.
Or call +358 19 52 12 312. Do not send sensitive site information by ordinary email.
Or email us directly, or call +358 19 52 12 312.
Defence and government: request a confidential technical briefing. We can work within national security procurement and accreditation requirements.
No. Detection and active countermeasures reduce the chance of a UAV reaching the asset.
HelixHold is the physical layer around the protected zone, for the case where one still does.
Yes. Where ground conditions and the connection detail allow it, foundation points can be installed in advance and capped at ground level, covered or hidden just beneath the surface.
If the frame and netting should not sit on site in the meantime, we can arrange storage project by project and deliver when you are ready to deploy.
Aperture, pretension, edge termination, frame loads and foundations are specified together against an agreed threat assumption. Ordinary mesh on a fence line is not designed for UAV impact.
It starts with the asset and the protected zone, then site layout, access, available space and ground conditions.
The structure is adapted to the site rather than selected from a catalogue.
Screw piles are usually preferred. They install quickly, transport compactly and create a below-ground anchor for the structure.
Where shallow bedrock, buried services or other site restrictions rule them out, HelixHold can be supplied with concrete counterweights instead.
Asset type and location, approximate dimensions, the space available, surface or ground type, and how urgent it is. Approximate answers are enough to start.
Protected area, structure type, netting specification, foundation method, ground conditions, site access and installation scope.
The scope is agreed project by project, so responsibilities and interfaces are clear.
Sensitive site information should not be sent through the web form or ordinary email.
We agree an appropriate secure channel before drawings, layouts or detailed asset information are exchanged.
Design assumptions, the load path from impact through to the ground, and the supporting technical data are available for qualified projects under NDA.
Published material is kept at concept level.
A site review for infrastructure and industrial projects. A confidential technical briefing for defence, government and security-sensitive work.