Built in Germany.
Every Component.
Every Weld. Every Blade.
TunnelTech designs and manufactures its wind tunnel systems at our Stuttgart-region production facility — including the axial fan assemblies that form the engineering core of every machine we build.
Made in Germany —
From the Heart of the Machine
TunnelTech wind tunnels are manufactured at our Stuttgart-region production facility in close collaboration with our sister production company, EVG Lufttechnik GmbH — a specialist industrial fan manufacturer with over 40 years of engineering heritage. Together, we control the design, engineering, and production of the most critical components in every wind tunnel we build: the axial fan assemblies that determine airspeed, efficiency, noise, and longevity.
End-to-end German engineering, on German soil, under ISO 9001 quality standards — from the first weld to final dispatch.
- Full in-house design, engineering, and production of all core fan components
- Over 40 years of industrial fan manufacturing heritage
- ISO 9001 certified production processes
- Complete vertical integration from raw steel to finished fan unit
- The same quality culture serving aerospace, automotive, and heavy industry worldwide
- ABB and Siemens motors selected for 30+ year operational lifespan
The Axial Fan:
Where Performance Is Born
At the centre of every TunnelTech wind tunnel sits a precision-engineered axial fan assembly — the component responsible for generating the sustained, laminar airflow that defines the flying experience. We do not source these from external suppliers. We build them, by hand, at our Stuttgart-area facility.
- Each unit assembled by hand with full visual inspection at every stage
- Carbon fiber impellers precision-balanced to eliminate vibration at the source
- Large diameter, low RPM design for minimal noise and vibration
- ABB or Siemens motors for 30+ year expected operational lifespan
- Complete diagnostic sensors for vibration, temperature, and oil level
- Automatic lubrication and individual frequency converters
The Blade That
Makes the Difference
Each TunnelTech axial fan is fitted with precision-engineered carbon fiber impeller blades. Carbon fiber is selected for performance: lighter than steel, stiffer under load, and producing negligible vibration at operating speeds. Each blade is individually balanced before installation.
- Each blade profile aerodynamically calculated for the specific tunnel diameter and target airspeed
- Individually balanced before installation — no tolerance for imprecision
- Lower weight versus steel reduces bearing load and extends drive lifespan
- Carbon fiber weave structure absorbs micro-vibrations that metal cannot
- Enables low RPM operation — primary driver of quiet performance
- Zero blade replacements across the global fleet since inception
From Raw Steel
to Finished Assembly
Every structural component of a TunnelTech fan system starts as raw steel cut to sub-millimetre tolerances and ends as a certified, documented assembly. Our Stuttgart-area workshop combines CNC laser precision with hands-on craftsmanship that cannot be automated — blade installation, individual balancing, and weld inspection by certified fabricators.
- TRUMPF CNC laser cutting for sub-millimetre precision on all steel components
- All structural welds performed and inspected by certified fabricators
- Full traceability — every component documented from raw material to dispatch
- Overhead crane capacity up to 12.5 tonnes for handling large assemblies
- In-house blade installation and precision balancing
- Every fan housing section fabricated to exact aerodynamic tolerances
Every Unit Tested
Before It Ships
Before any fan unit leaves our facility, it undergoes a full commissioning and performance validation cycle. Airflow output, vibration signature, thermal behaviour, and sensor response are each verified against specification. Only units that pass our complete test protocol are cleared for installation.
- Full commissioning and performance validation before dispatch
- Airflow output verified against design specification
- Vibration signature, thermal behaviour, and sensor response checked
- Factory acceptance testing open to client teams
- Complete documentation package delivered with every unit
- This protocol is the foundation of TunnelTech's zero-failure track record
A Heritage Built
for Extreme Demands
Our manufacturing heritage spans four decades and some of the most demanding industrial environments on the planet — from automotive production lines and heavy steel industry, to ceramic kilns operating at 573°C and the NASA Flight Dynamics Research Facility. This depth of experience is embedded in every component that carries the TunnelTech name.
- 40+ years of industrial fan engineering and production
- Clients include automotive OEMs, steel industry, ceramics, energy, and defence
- Fan systems delivered for NASA Flight Dynamics Research Facility
- Experience across operating temperatures from −40°C to 573°C
- The same engineering discipline applied to every TunnelTech wind tunnel
- 25+ wind tunnel installations worldwide since 2014
Manufacturing Gallery
See the Machine
That Powers Your Tunnel
We welcome prospective clients and partners to visit our Stuttgart-region production facility and witness our manufacturing process in person.