The Aircraft Performance Company GmbH

Engineering Aerodynamic Interaction into Reality

Not geometry.
Not isolated surfaces.

Aerodynamic interaction — engineered, validated and integrated into real aircraft.

From simulation to hardware.
From concept to certified retrofit.

At APC, engineering does not begin after the idea.
It begins with it.

Aerodynamics, structure, aircraft geometry and retrofit feasibility are developed as one unified system — from first concept to real-world integration.

Computational Fluid Dynamics

Where Aerodynamic Interaction Becomes Measurable

Before hardware exists, interaction must be understood.

APC uses high-fidelity CFD not to evaluate isolated geometries —
but to analyze how aerodynamic elements influence each other at the origin of induced drag.

CFD at APC is not used to confirm assumptions.
It is used to discover interaction effects — supported by high-fidelity simulation, algorithmic optimization and AI-assisted exploration of complex aerodynamic systems.

Capabilities

• RANS-based transonic simulation (Altair HyperWorks, ANSYS Fluent)
• Realizable k–ε turbulence modelling
• Vortex interaction and wake structure analysis
• Pressure distribution & aerodynamic load mapping
• Multi-parameter optimization (30+ variables)
• Coupled aero-structural simulation (CFD + FEM, Altair HyperWorks)

AI-Driven Optimization Layer

• Algorithmic exploration of 30+ interacting parameters
• Automated evaluation of aerodynamic configurations
• Identification of non-linear interaction effects within the vortex system
• Geometry evolution guided by performance gradients

This enables discovery of aerodynamic relationships not visible through conventional analysis.

Several US and international patents reflect the depth of this development process.

Engineering Perspective

CFD at APC is not used to confirm intuition.
It is used to discover interaction effects that define real aircraft performance.

Prototyping & Structural Testing

Concepts Must Survive Reality

APC develops full-scale CFRP prototypes to validate aerodynamic concepts under real structural and integration constraints.

Performance is evaluated together with:

• Load paths
• Structural behaviour
• Aeroelastic response
• Retrofit feasibility

Capabilities

• Full-scale CFRP prototype manufacturing
• Structural load testing and validation rigs
• Aero-structural coupling analysis
• Modular multi-element system validation
• Retrofit-oriented attachment and integration concepts

The transition from simulation to hardware defines credibility.

Wind Tunnel Testing

Where Prediction Meets Proof

Simulation must meet reality.

APC conducts wind tunnel testing to validate aerodynamic interaction under controlled, measurable conditions.

Scaled and instrumented models evaluate:

• Flow structures
• Pressure distribution
• Vortex interaction

Bridging the gap between numerical prediction and physical performance.

Capabilities

• Wind tunnel model design and preparation
• Instrumentation for pressure and flow measurement
• Flow visualization and vortex analysis
• Correlation between CFD and experimental data
• Validation of multi-element interaction effects

Engineering Perspective

Wind tunnel testing is not validation of geometry.

It is validation of interaction physics.

It ensures that performance is not only predicted —
but physically demonstrated and scalable to real aircraft.

Built by Engineers Who Work at the Edge of the Wing

APC’s work is driven by engineers who move between theory and reality.

They model flow.
They evaluate structure.
They build hardware.
They prepare tests.

And they follow each concept until it proves itself on the aircraft.

The objective is always the same:

To turn aerodynamic insight into real performance.

Testing is Where Theory Meets Reality

Every aerodynamic idea must survive reality.

APC engineers test, challenge and refine configurations across simulation, hardware and controlled environments.

Engineering decisions are verified against real aerodynamic behavior.

Aerodynamics Must Respect Structural Reality

Any wingtip system influences more than drag.

It affects:

• Load distribution
• Bending behaviour
• Aeroelastic response
• Structural integration

APC engineering treats aerodynamic performance and structural consequence as one unified problem.

From Analysis to Aircraft Integration

Credibility is built through validation.

At APC, engineering follows a continuous path:

1 — Geometry Capture
Aircraft-specific geometry defines the baseline for all development work

.

2 — Digital Modelling
CAD and aerodynamic models are created for integration analysis.

3 — Aero-Structural Iteration
Configuration is refined across aerodynamic and structural parameters.

4 — Prototype & Testing
Development transitions into physical validation and test preparation.

5 — Integration Pathway

Final configurations are aligned with retrofit and certification requirements.

Engineering for Aircraft That Already Fly

Real aircraft define real constraints:

• Structural limits
• Maintenance cycles
• Installation access
• Certification pathways

APC engineering is built around these realities —
not around idealized conditions.

Technical Dialogue

Detailed engineering discussions on aerodynamic integration, validation and retrofit feasibility are conducted within confidential technical exchange.