Bioinspired platforms for your creative projects

We develop, manufacture and sell winged flying robots for research, drone shows and other creative applications


Watch the drones in action

Our Story

When designing our flying robots, we search inspiration  among hummingbirds, dragonflies and other flying animals.

Experience & passion
Being a university spin-off, we have over 10 years of experience with studying flapping flight and developing flapping wing robots at Delft University of Technology (Netherlands) and Université Libre de Bruxelles (Belgium). Being engineers by education, we are passionate about nature and its ingenious solutions. Over the years our bio-inspired technology matured, and it is now ready for real world applications.

Entertainment, and beyond
Our journey began by creating solutions for the entertainment industry, but we soon encountered new opportunities in the R&D and research spaces. Ultimately, we aspire to create a new class of flapping wing drones for professionals as well as consumers interested in non-intrusive and safe drone solutions in human-shared spaces. The possibilities are endless: Engage with us and let’s explore them together!

Our Products & Services

Drone Platforms

Looking for a bioinspired flying platform for your research or your creative projects?

Shows & Events

Would you like to see robotic birds, butterflies or fairies flying during your concert, festival or in your theme park?

The DIY Kit
(under development)

Experience the joy of building and flying your very own Flapper Drone

How does the Flapper fly

Flapper Drones fly like birds or insects by flapping their wings. To lift the drone, the wings need to flap back and forth 12 times per second. Having four wings, just like dragonflies do, improves flight stability and power efficiency. The wings and their motion have been carefully optimized in order to maximize the flight time per battery charge.

Turns and other maneuvers are executed by altering the motion and geometry of the individual wing pairs. An onboard flight computer is needed to assist flying these drones, since a human pilot alone is unable to steer fast enough. Using information from the on-board gyroscopic sensors (which are by the way also bioinspired), the computer updates the wing motion parameters as frequently as 500 times per second. 

Having full control of the body rotations (roll, pitch and yaw) and the thrust force that the wings produce, Flapper Drones can fly in any direction. They can take off vertically like a helicopter, hover and fly forward/backward or sideways by tilting their body in the respective direction. The transition can be slow and smooth, but also very agile. A Flapper Drone can accelerate from hover to fast horizontal flight and revert back to stand still in no time.

Key Features



Lightweight drone, no propellers. The wings of our Flapper Drones flap back and forth, gently bouncing off objects, causing no damage.



The naturally moving wings give the Flapper Drones an attractive look, which can be further enhanced by custom organic-looking shells illuminated with programmable RGB lights.  



Drone = source of annoying buzzing noise?
Not anymore, the flapping wings of our drones produce a natural low-frequency sound that is less intrusive.

Fully Customizable

The wings and body-shell of the Flapper Drones are fully customizable. The drone has sufficient thrust reserves to integrate a different autopilot system or additional sensors.


Easy servicing

We design our Flapper Drones to be robust and easily serviceable. The critical components (wings, flapping mechanisms, ..) can be easily replaced in no time.



Flapper Drones can be controlled just like a quadrotor; up/down, forward/backward or sideways. It can be operated autonomously using a localization system (motion capture, UWB, GPS).

Drone Platforms

We provide ready-to-fly drone platforms as well as customized solutions for your bio-inspired research and creative projects. Whether you are an academic research group, drone show operator or an artist, we understand your needs and, as a university spinoff, we are always excited to explore new territories. 

Programmable & open source
Deploy your own algorithms.

Gather data
Live telemetry and on-board data logging.

Extra payload capacity
Add sensors, or a larger battery.

Easy servicing
Critical components can be easily replaced in no time.

Custom solutions
We have the expertise as well as curiosity.

Shows & Events

We help create unique visual experiences with drone show operators, artists, festivals, theme parks or theaters. We get together with our clients to understand their needs and work together on customized solutions.

Inherently safe drones
Lightweight, no fast-spinning propellers. Fly close to people for a more captivating experience.

Customizable design
Hummingbird, butterfly, fairy… Imagination has no limits!

Position-controlled indoor flight.

Light effects
Control the color patterns and illumination of each drone.

The DIY kit
(under development)

The DIY kit’s intuitive design allows for a fun and engaging experience. It is a hands on approach to learning a novel flying mechanism. The assembled drone can be controlled precisely but also flown dynamically, and thus offers loads of fun both indoors as well as outdoors.

Easy to build
Have fun & learn how it works.

Easy to fly
Easier and more intuitive than quadcopter.

Learn new tricks
Fly forward, sideways or do flips.

Be creative
Come up with your own shells and wing designs.

Program it
Develop code, add sensors and make the drone autonomous.



Matej Karasek with DelFly Nimble

Matěj Karásek

Founder / Director

Matěj is a mechanical engineer with a PhD in Engineering Sciences. He has 10 years of experience in development and research of flapping wing aerial vehicles at Delft University of Technology and at Université Libre de BruxellesMatěj is also a passionate mountainbiker and participates in long-distance bikepacking events.

Rick Ruijsink with DelFly



Rick is an experienced aerospace engineer. He spent a large part of his career as aerodynamics specialist in the automotive industry, and has been running an engineering consultancy company for the past 25 years. Rick is also an active participant of international RC-model-airplane competitions.

Guido de Croon

Scientific Advisor

Guido is a professor at TU Delft, Netherlands. Being the scientific lead of the Micro Air Vehicle Laboratory, his research interest lies with computationally efficient, bio-inspired algorithms for robot autonomy, with an emphasis on computer vision. The laboratory also develops lightweight flying robots, such as the DelFly flapping wing MAV.


For latest news, please check our LinkedIn page.

Join us

Interested to join our team?


As of March 2021, we have open positions for interns in the following fields:

    • Industrial design
    • Mechanical engineering
    • Mechatronics & control 
    • Sales & marketing

Full-time positions

Currently, we have no open vacancies.

Nevertheless, if you feel that with your skills you could be an invaluable addition to our team, spontaneous solicitations are encouraged!

To apply and for more information, please send your CV, a brief cover letter explaining your motivation to work with us and examples of you previous work to: