Sleipnir Technologies

About
Sleipnir

Sleipnir is an innovative start-up specializing in the development and production of
rotor blades and structural components made from advanced composite materials
based on renewable raw resources.

Founded by two entrepreneurs with roots in agriculture, we combine hands-on
experience with strong technical and business expertise.

In cooperation with medium-sized partners such as Cast Coil GmbH, we are
establishing a fully integrated value chain for the sustainable production of drones –
from material development to final assembly.

Our goal: to enable resource-independent, resilient, and locally based drone
manufacturing that unites environmental responsibility with technological progress.

Innovation born of responsibility

We develop and manufacture sustainable high-performance components for drone technology—from renewable raw materials, with a focus on local value creation and technological excellence.
Our goal: robust, efficient, and sustainable solutions that combine independence and sustainability.

Our philosophy

Technological excellence begins with responsibility. We rely on European raw materials, local manufacturing, and short supply chains—for efficiency, sustainability, and independence. Our products combine high technology with real-world applicability, creating a future-proof foundation for defense, logistics, surveillance, and exploration.

Vision

We are shaping the future of high-performance drone technology with sustainable, locally manufactured rotor blades and components made from renewable raw materials. Our goal is to create a European supply chain that combines technological excellence with environmental responsibility.

Mission

We develop and manufacture rotor blades and structural components for high-performance drones from European renewable raw materials.
Through local value creation, efficient processes, and independence from global raw material markets, we create a resilient, sustainable basis for applications in defense, logistics, surveillance, and exploration.

Responsibility for democracy, security, and resources

Sleipnir Technologies sees itself as a technology partner for free and democratic societies. Our systems are designed to support legitimate defense, deterrence, and the protection of human life. We work exclusively with government institutions and partners that respect the fundamental principles of international law and human rights.

Our values:

Democratic responsibility
We only supply technologies to governments and institutions that respect democratic principles and the rule of law.

Ethical use of technology
We support the responsible use of artificial intelligence and autonomy in military applications. Human control and clear rules of engagement take precedence.

Sustainability and resource conservation
The use of domestic natural fibers and bio-based resins is a conscious choice. We want to strengthen defense capabilities while reducing the ecological footprint of the systems.

Transparency and partnership
We seek close cooperation with authorities, research institutions, and industry partners in order to consistently develop technologies further while at the same time conducting an open public debate about their use.

Thomas Thiemann

Managing Partner

Raised on a family farm,Franjo combines hands-on experience with strong technical and business expertise. Following an apprenticeship as a precision mechanic, he earned a Bachelor of Science degree, an MBA in Industrial Engineering, and certification as an Industrial Master in Metalworking. With many years of experience in project management, sales, executive leadership, and investment, Thomas Thiemann stands for practical solutions, efficient processes, and the drive to take on and implement new challenges. His focus lies on combining technological innovation with sustainable entrepreneurship.

Franjo Wöstmann

Managing Partner

Trained as an agricultural machinery mechanic and holding a degree in mechanical engineering (Dipl.-Ing.) with a focus on manufacturing technology, Franjo combines deep technical expertise with extensive leadership experience. An Executive MBA complements his profile with strong strategic and business management skills. With more than 20 years in senior research and development roles, Franjo has built profound expertise in foundry technology and electric drives. As the founder of Cast Coil GmbH, he stands for innovation, technical excellence, and practical implementation. His mission is to create sustainable and robust engineering solutions by combining high technology with economic efficiency and circular economy principles.

27.05.2025

Getting to know each other and exchange Thiemann/Wöstmann

27.05.2025

29.07.2025

Foundation for collaboration – Kick-off

29.07.2025

05.08.2025

Partnership agreement and notarization

05.08.2025

13.08.2025

Entry in the commercial register

13.08.2025

29.08.2025

First CFRP prototype in permanent form

29.08.2025

03.09.2025

First prototype with flax fibers in permanent form

03.09.2025

05.09.2025

First public presentation, Jens Spahn

05.09.2025

10.09.2025

Initial test with advanced geometry

10.09.2025

November 25

First international presentation

November 25

Continuing…