Invisible Engineering for Future Airports

Airports are among the most complex buildings we design. They must accommodate rising passenger numbers while improving security, operational continuity, energy performance, climate resilience and comfort. Yet for passengers, the experience should feel easy, intuitive and calm.

That is the principle behind Deerns’ Invisible Engineering: sophisticated modelling and building physics working quietly in the background to inform complex decisions, optimise performance and create an experience where the benefits are felt without the engineering being seen.

Environmental simulation, energy modelling, micro-climatic analysis and building physics allow designers to understand how an airport will perform before it is built or modified. Used from the earliest design stages, these tools can shape architecture, building services and operational strategies around measurable evidence rather than assumptions. They also create a common technical language for architects, engineers, operators and clients.

Simulation as design intelligence

Simulation is most valuable when it informs decisions, rather than just confirming them. Alternative layouts, façade configurations, glazing ratios, shading strategies, ventilation concepts and system options can be assessed while design choices are still flexible.

This gives airport operators and design teams a clearer basis for comparing trade-offs. A reduction in glazing, for example, may lower solar gains and cooling demand while maintaining sufficient daylight and visual comfort. A revised circulation strategy may improve passenger movement without increasing floor area. The value lies in showing what each option means for several performance criteria at once.

3 key benefits of using modelling and building physics early in airport design:

• Test alternatives earlier, when change is less costly
• Balance energy, comfort, operational and architectural priorities
• Create evidence-based decisions that can be understood across disciplines

Designing for resilience and wellbeing

The need for this approach is increasing as airports face more demanding operating conditions. Airports Council International (ACI) estimates that global passenger traffic could reach 10.2 billion passengers in 2026, while travellers increasingly expect smoother, more personalised and less stressful journeys.

Technology can help airports increase effective capacity without continually expanding buildings. Passenger flow analysis, sensors, predictive systems, biometrics and touchless processing can reduce queues and identify congestion. Building performance modelling adds another layer, testing whether spaces and environmental systems can remain comfortable and efficient as passenger loads, weather conditions and operational patterns change.

Climate resilience is becoming equally important. Heatwaves, intense rainfall and periods of thermal stress can affect passenger comfort, drainage, equipment performance and operational continuity. Simulation allows future climate scenarios to be considered from the outset.

3 typical responses include:

• Passive shading and solar-control strategies to limit heat gains
• Permeable surfaces, drainage and landscape measures to manage intense rainfall
• Adaptable environmental systems capable of maintaining performance under changing conditions

Passenger wellbeing should be treated with the same rigour. Thermal comfort, daylight, acoustics, indoor air quality, biophilia and outdoor spaces all influence how people experience an airport. The emerging “quiet terminal” concept reflects this shift towards environments that reduce sensory overload and support a calmer journey. As passenger numbers continue to grow, the challenge will be to create a sense of calm even within increasingly busy and densely occupied spaces.

Learning from airport projects

These principles are already being applied in Deerns projects. For Vilnius Airport, environmental simulation informed architectural and engineering decisions from an early stage. Daylight, glare, visual comfort and energy performance were assessed together, including the effect of large transparent surfaces and future climatic variability.

At Naples Capodichino Airport, simulation supported improvements within an existing operational terminal. Thermal comfort and energy load studies allowed alternative scenarios for layout, envelope performance and air-conditioning strategies to be compared where physical intervention was constrained and airport operations had to continue.

At Salerno Costa d’Amalfi Airport, modelling addressed outdoor comfort, climate resilience and decarbonisation together. The design considered several sustainable measures, including:

• Shading structures, passive ventilation and permeable paving
• Urban greenery and outdoor microclimatic strategies
• Photovoltaic potential, embodied carbon and whole-life environmental performance

These examples clearly demonstrate why airport performance cannot be reduced to a single metric. Energy consumption, passenger throughput, comfort, carbon impact and resilience are interconnected, and each design decision can influence several outcomes.

The engineering behind a seamless journey

Future airports will increasingly operate as responsive systems whose performance can be measured, tested and improved as technology, climate and passenger behaviour evolve. That requires reliable data, advanced simulation and engineering disciplines working together from the earliest design stages.

Invisible Engineering gives project teams a way to manage that complexity. Deerns combines building physics, simulation modelling, MEP engineering, sustainability and airport expertise to turn technical data into practical design choices. When those choices result in comfortable spaces, smoother journeys, lower environmental impact and stronger resilience, the engineering may remain unseen but its value is experienced everywhere.