This is a list of methods and code development we can offer:

  • Airfoil design
  • BAFF, code for analysis of fiber reinforced wings
  • ANSYS user routines
  • Fatigue evaluation (metal, bondings, FRP)
  • PART 25 principal structure elements (PSE)
  • Damage Tolerance, Widespread Fatigue Damage (WFD) Analysis
  • Puck’s failure criteria
  • Bonding finite element
  • Aircraft load calculation
  • Flight dynamics elastic aircraft
  • Avionics, complex airborne hard- and software specification and certification
  • Aeroelastic analysis
  • Ground vibration testing
  • Flight vibration testing


With the quality assurance procedures of the aircraft production organisation, modern equipment and about 2400 sqm production floor, prototyping is an essential part of the entire aircraft design process.

Flight Testing

Flight Testing is an inherent capability for successful Aircraft design. Being able to match design parameters with in-flight experiments creates a unique knowledge based on validated simulation codes.

Our Flight Test Organisation covers the planning and performance of certification and development flight tests for manned and unmanned aircraft. The Flight Test Operational Manual – FTOM – is included within the company‘s Design Organization – DO – and approved by the Aviation Safety Agency, provides the reference for certification flight tests.

With our fleet of research aircraft we can provide a unique testing environment:

  • eta Research Aircraft
  • MultiCopter
  • High Alpha Research Glider

Wind Tunnel Models

With the knowledge of the aircraft designer Leichtwerk AG is very well suited to supply other companies, research institutions and wind tunnels with custom tailored models, which represent accurately the aerodynamic and structural characteristics to be tested.

In over 20 years dozens of the most complex models have been delivered to a wide variety of wind tunnels.

Read more on our wind tunnel models in our white paper.


Affiliated Companies

Cutting edge design needs access to research. The spin-off Leichtwerk Research GmbH feeds the mature aircraft design processes with new technology.

Further information

SFL GmbH pioneered solar powered flight for more than 20 years and has vast experiences in multi-disciplinary design and certification of light aircraft and unmanned air systems. 

Further information