Discover our developments in the area of aviation on our interactive plane.

“Heavy, massive and difficult to handle.”

This statement applies to many jigs and tools currently in use. The use of modern materials like CFRP – offers promising potential. We support you to identify and implement this potential.

We support our customers and partners in the development of future empennage. Using advanced materials and manufacturing technologies, components are optimized regarding manufacturing costs and efficiency. Innovative technologies are on the way.

The wings are among the most important components of an aircraft.

SPITZNER ENGINEERS developed, among other things, the wing cover of the A350 XWB or the wings of future commercial aircraft.

The development and the design of prior aircraft programs took place in 2D. Old databases with modern CAD software are processed in the program “Legacy goes 3D”. Using the new data stands for example; quality assurance can be determined and validated.

Modifications of tools can be digital implemented with little effort and the effects on the components are checked in advance. You can therefore significantly reduce manufacturing costs and scrap parts.

We create studies for future short range aircraft manufactured by carbon fiber-reinforced plastic. In the past we have developed concepts for topics like: Shell Division of the fuselage, floor structures, stringer and frames, window and door environments, door kinematics and the integration or the rear pressure dome.

We have developed innovative door concepts which combine sliding and swing kinematics. In this way, higher passage widths, simplified locking mechanisms and a reduction of the fuselage cut-out can be enabled.

In order to reduce the weight, we have developed an emergency exit door in different designs using fiber-reinforced composites for the A320 family.

The project included design, analysis and preparation of a certification and approval plan.

Together with our customers we develop solutions such as foldable passenger seats, fairings or monuments which make flying more comfortable for passengers and more efficient for airliners.

We provide the following services:

  • Development of promising concepts and products
  • Design and 3D visualization via computer aided design (CATIA V5)
  • Design of fiber reinforced components (composite design for engineering) including relevant manufacturing documents (composite design for manufacturing)
  • Design of electrical heating systems
  • Aerodynamic design
  • Structural interpretation of primary and secondary components
  • Servicing:
    • Project management
    • Manufacturing and cost optimization
    • Process analysis, creation and optimization
    • FMEA
    • Risk analyses
    • Test layout and support


Please contact us!


More than Energy

Energy to us does not only mean sustainable energy production based on sunlight, wind- and hydropower. Energy to us also means efficient usage, provision and storage of renewable energies, as well as the transition into other forms of energy.

We are able to optimize wind energy turbines, increase yield or extend their life span. Through the technology BLANCAIR we produce wind energy and at the same time separate CO2 from the atmosphere. These two outputs can then be used to produce climate-neutral synthetic fuels for shipping and aviation sectors by utilizing power-to-X approaches.


BLANCAIR® is a technology that combines the conventional generation of green electricity from wind energy with the simultaneous recovery of CO2 from the atmosphere. It uses unused synergies between a wind turbine and a Direct Air Capturing (DAC) system. The technology BLANCAIR® has no negative impact on the generation of the electric power and provides the required energy for operating the DAC-system economically.

This technology offers a key component for industrial Power-to-X plants to produce 100% climate neutral fuels from water and air.

Wind energy

Discover our developments in wind energy on our interactive wind turbines.


Wind turbines are generally designed for 20 years of operation and approved by building authorities. But what happens after 20 years? Is a further operation in technical, financial and licensing terms also worthwhile? We are asking these questions within the “wp.neo” research program supported by the German Federal Ministry of Economics and Technology. We are developing a methodology for wind farm analysis, with which the utilization reserves of individual turbines are derived. In this context, a model is developed to analyze the economic viability of a possible operating time extension and identify potential optimization potentials for the wind farm operation.

The efficiency of a wind turbine can be improved significantly by an aerodynamic optimization of the rotor blade. To do this, we have developed a system with a new aerodynamic airfoil in the root area. At the tip of the blade, the induced drag is reduced by a new winglet. Both components are connected by a system of a passive boundary layer control that in addition increases the aerodynamic efficiency.

The system is developed and tested for stall as well as pitch controlled turbines and increases performance by up to 15%. The components are adaptable to every possible rotor blade.

Link: www.best-blades.de

The rapid development of today’s wind turbines, especially the steep climb of the rotor diameter, creates high demands which can hardly be met with conventional designs.

In this research project, we have developed a new design for rotor blades by using split blade which is protected by patent. The goal was a completely new design, optimized on the load history and a higher degree of automation in the production. This concept allows to withstand high loads and also the increased cost pressure in the wind industry.

Winglet, serrations, rotor blade extension or individual solutions: we support your projects. For many years, we have gained experience in the field of structural, aerodynamic and acoustic development of rotor blade tip modification. Improved concepts for lightning receptors as well as the design of an optimized drain system at the tip.

We provide solutions for you:

  • Aerodynamic and structural design
  • Custom-designed rotor blade design
  • Component design
  • Design services including the use of composite part design
  • Assessment of rotor blade damages caused by certified personnel
  • Drafting and verification of repair solutions and procedures according to the standard
  • Manufacturing and cost optimization
  • Process analysis, creation and optimization
  • FMEA
  • Risk analysis
  • Test design and support

Please contact us!

The retrofittable rotor blade heating system ADIOS is a complete system solution which allows an ice free and safe operation of the wind turbine during the winter. For the retrofitting of ADIOS a modular heating system is mounted at the aerodynamically important rotor blade leading edge.

The intelligent control management ADIOS eco control ensures a safe and energy efficient operation by means of integrated sensors.

The integrated lightning protection discharge is tested in accordance to IEC guidelines and protects all adios components and in addition the rotor blade leading edge. The erosion protection increases the durability of the rotor blade. The component certificate CC 160301 for the rotor blade heating system ensures you the acceptance in accordance to IEC 61400-1 by an accredited laboratory.


The ADIOS system is not yet available on the market.


Constant investment in research and development play an important role in our long-term vision and strategy. This gives us the opportunity to develop technologies that may be used in the next generation of aircraft and wind turbines.

Aerodynamic optimization

To improve performance of a wind turbine, we have developed the technology of the boundary layer control for rotor blade. This technology is already known in aviation. The blow out and suction of air to control the boundary layer on the suction side of aerodynamic profiles helps to enrich the boundary layer with energy and to prevent their detachment from the profile or to delay.

In many wind tunnel tests, various test facilities in Germany and Asia we were able to achieve performance gains of up to 15% with this aerodynamic rotor blades.

This technology is unique in the world and already in 2013 was awarded the German renewables award.

Future heating systems

Based on electrically heated coatings, we develop products for different applications. For the wind energy market, we have developed an Anti-and De-Ice Operating System (ADIOS) for the rotor blade.

Flexibility, durability and high efficiency make this technology ready for the electric mobility, aviation and building sectors. We are continuously developing this technology and can adapt these modern heating systems for many new applications.


A competent network from the idea to the product

The SPITZNER ENGINEERS GmbH is working together for many years with partners in the field of product development without gaps to form off the entire process chain for the realization of individual customer requests. Due to the close cooperation remains the supply of your individual requirements and needs in one hand because a close contact between us and the respective partners is guaranteed.

Ideas must be protected.

As experienced patent attorneys, Hansen and Heeschen make their contribution that the advantage in know-how and competitive advantage are safeguarded in new products, innovative ideas and promising research results.

Design and functionality

We have mastered our engineering craft such as structural – and aerodynamic design or construction. Design, we like to draw branch wheel on the know-how of our partner zweigrad. Together, we use synergies to promote innovations and interdisciplinary projects to edit.

Production processes and the construction of demonstrators made of CFRP

The Composite Technology Center in Stade is Germany’s leading center for research and development in the design and manufacture of large and complex CFRP components and supports us in the implementation of ideas.

Competent implementation in the field of fiber composite materials

The M+D Composites Technology GmbH acts as a reliable partner from manufacturing of molds to prototyping and serial production.

Machinery and tooling

As a long-standing partner and direct neighbor, the Bastian Metall-und Maschinenbau GmbH supports us in the construction of demonstrators, jigs and tools made of steel, stainless steel or aluminum.

Industrial electric heating systems

With our competent partner Huikeshoven b.v. from the Netherlands, we develop new systems and technologies for the marine/offshore, mobility and renewable energy sectors.