• Home
  • William Thielicke
William Thielicke

William Thielicke
Optolution GmbH · R & D

Doctor of Philosophy
Currently developing and applying methods and tools for laser optical flow measurements.

About

22
Publications
24,377
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,109
Citations
Introduction
I love fluid dynamics, PIV, CAD design, drones, aerodynamics, electronics, programming, biomimetics and animal locomotion.
Additional affiliations
August 2018 - present
Optolution Messtechnik GmbH
Position
  • Engineer
Description
  • OPTOLUTION Messtechnik GmbH is developing and applying laser optical flow measurement techniques.
October 2014 - January 2018
Tobyrich GmbH
Position
  • Engineer
Description
  • TobyRich GmbH is developing fixed-wing drones.
September 2008 - October 2014
Hochschule Bremen
Position
  • Researcher
Description
  • I have been assisting in teaching + developing measurement techniques.
Education
April 2008 - October 2014
University of Groningen
Field of study
  • Biomimetics / Fluid dynamics
April 2004 - July 2007
Technische Universität Darmstadt
Field of study
  • Biology / Biomimetics
October 2000 - March 2004
Humboldt-Universität zu Berlin
Field of study
  • Biology

Publications

Publications (22)
Article
Full-text available
Wind data collection in the atmospheric boundary layer benefits from short-term wind speed measurements using unmanned aerial vehicles. Fixed-wing and rotary-wing devices with diverse anemometer technology have been used in the past to provide such data, but the accuracy still has the potential to be increased. A lightweight drone for carrying an i...
Article
Full-text available
PIVlab is a free toolbox and app for MATLAB®. It is used to perform Particle Image Velocimetry (PIV) with image data: A light sheet illuminates particles that are suspended in a fluid. A digital camera records a series of images of the illuminated particles. The input images are divided into sub-images (interrogation areas), and for each of these,...
Article
Crocodilians ventilate their lungs using a novel respiratory mechanism called the hepatic-piston apparatus. Previous work presumes that the hepatic-piston pump is facilitated by a smooth thoracodorsal ceiling. However, the sliding and displacement of the pleura has never been confirmed in living crocodilians. Using ultrasound we recorded images of...
Conference Paper
Full-text available
Das von der PTB entwickelte bistatische Doppler-Lidar-System erlaubt die optische Bestimmung des Geschwindigkeitsvektors von Aerosolen in einer Messhöhe von 5 m bis über 250 m. Es wurde eine Vergleichsmessung zwischen dem hochauflösenden Doppler-Lidar der PTB und dem Drohnen-basierten Ultraschall-Anemometer OPTOkopter der OPTOLUTION Messtechnik Gmb...
Method
Full-text available
The OPTOkopter has been developed for airborne, three-dimensional wind measurements and air quality monitoring. A high-precision, 3D wind sensor is carried by a drone that was built from scratch for this purpose. The drone was optimized for long flight times and precision flight. All wind measurements werde validated with the new wind lidar system...
Presentation
Full-text available
PIVlab ist eine freie MATLAB Implementierung von „Digital Particle Image Velocimetry“ (DPIV), einem berührungslosen Verfahren zur Analyse von Strömungsgeschwindigkeiten. Die Methode nutzt Bilder, die mit einem bekannten Zeitabstand aufgenommen wurden. Aus diesen Bildern wird orts- und zeitaufgelöst die Bewegung von Texturen durch Kreuzkorrelation e...
Article
In aircraft propellers that are used to propel aircraft forward at some speed, propeller blade twist is important to make the individual propeller 'wings' operate at a relatively constant effective angle of attack over the full span. Wing twist is sometimes also assumed to be essential in flapping flight, especially in bird flight. For small insect...
Article
Full-text available
The effect of airfoil design parameters, such as airfoil thickness and camber, are well understood in steady-state aerodynamics. But this knowledge cannot be readily applied to the flapping flight in insects and birds: flow visualizations and computational analyses of flapping flight have identified that in many cases, a leading-edge vortex (LEV) c...
Thesis
Full-text available
It was thought that the aerodynamics of flapping flight in birds is fully understood for quite some time, but recent studies have shown that this is not the case. Bird flight uses aerodynamic mechanisms to generate lift and thrust that differ significantly from conventional aircraft. In slow speed situations, the aerodynamics of bird flight becomes...
Article
Full-text available
Digital particle image velocimetry (DPIV) is a non-intrusive analysis technique that is very popular for mapping flows quantitatively. To get accurate results, in particular in complex flow fields, a number of challenges have to be faced and solved: The quality of the flow measurements is affected by computational details such as image pre-conditio...
Conference Paper
Full-text available
Die aerodynamischen Eigenschaften eines Flügels werden maßgeblich durch das Flügelprofil bestimmt. Unter stationären aerodynamischen Bedingungen-welche für die bemannte Luftfahrt bedeutsam sind-ist der Einfluss von Profilwölbung und-dicke im Wesentlichen aufgeklärt. Weitgehend unabhängig von der Reynoldszahl (Re) erhöht die Profilwölbung den Auftri...
Article
Full-text available
Vertical and horizontal force of a flapping-wing micro air vehicle (MAV) has been measured in slow-speed forward flight using a force balance. Detailed information on kinematics was used to estimate forces using a blade-element analysis. Input variables for this analysis are lift and drag coefficients. These coefficients are usually derived from st...
Article
Full-text available
Vertical and horizontal force of a flapping-wing micro air vehicle (MAV) has been measured in slow-speed forward flight using a force balance. Detailed information on kinematics was used to estimate forces using a blade-element analysis. Input variables for this analysis are lift and drag coefficients. These coefficients are usually derived from st...
Conference Paper
Full-text available
Flapping-wing MAV designs can potentially benefit from the morphological optimizations of natures flyers, especially in situations where the maximal force-and not the maximal efficiency-is most important: during maneuvering, takeoff and landing. At those moments, unsteady aerodynamics potentially provides the necessary extra forces that keep birds...
Conference Paper
Full-text available
Three-dimensional flow field around a flapping bird wing E.J.Stamhuis,W. Thielicke, I. Ros, andJ.Videler (Universityof Groningen) Unsteady effects are more important during flapping flight than previously thought, as studies on hovering insects and more recently on flapping artificial bird wings and on flying bats have shown. Here we present a time...

Network

Cited By

Projects

Projects (3)
Project
Since 2007, I am designing flight controller electronics, control loops, software, airframes etc. Sometimes for fun, and sometimes as a profession, but most of the times both.
Project
We developed a PIV software for MATLAB. The project is active, and I am continuously improving the code.
Archived project
The goal is to understand the aerodynamics and flow seperations at slow speed flight in birds.