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Fechner, U. (author), van der Vlugt, R. (author), Schmehl, R. (author), Ockels, W.J. (author)
Seminar organized by Delft University Wind energy research institute for European Academy of Wind Energy
conference paper 2011
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Verheul, R.F. (author), Breukels, J. (author), Ockels, W.J. (author)
This paper discusses the requirements for fabrics and joints for use in a long-endurance, high-altitude inflatable kite. Calculations of the expected stresses as well as the consequences of scaling with respect to these stresses are discussed. An overview is given of currently available kite fabrics and their joining methods. Suitable fabrics...
conference paper 2009
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Kruijff, M. (author), Van der Heide, E.J. (author), Ockels, W.J. (author), Gill, E.K.A. (author)
The 2nd Young Engineers' Satellite (YES2) is a 36 kg student-built experiment that piggybacked on the Foton-M3 microgravity platform in September 2007. YES2 intended to demonstrate tethered SpaceMail, a concept for frequent sample return originally proposed for the International Space Station (ISS). This paper summarized the YES2 mission results...
conference paper 2008
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Van der Heide, E.J. (author), Kruijff, M. (author), Ockels, W.J. (author)
Today there is no common vision on sustainable space transportation. Rockets expel gasses and solid rockets often small particles. These have negative effect on the environment, but it is not understood to what extent. With ever growing demand for access to space, sustainable technology developments are to be made. In this respect a truly...
conference paper 2008
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Terzi, A. (author), Ockels, W.J. (author)
The Superbus, rendered in Figure 1, is a new concept for public transportation. It is sustainable, fast, economic, and appealing and transports passengers and goods from point to point and drives at high speed (250 km/h) on its dedicated and relatively cheap infrastructure. In this paper the material used, the cost effective tooling and...
conference paper 2008
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Williams, P. (author), Lansdorp, B. (author), Ruiterkamp, R. (author), Ockels, W.J. (author)
Non-powered flight vehicles such as kites can provide a means of transmitting wind energy from higher altitudes to the ground via tethers. At Delft University of Technology, construction and testing of such a high altitude wind machine is ongoing. The concept is called the Laddermill. It generates energy by pulling a line under high tension from...
conference paper 2008
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Lansdorp, B. (author), Ruiterkamp, R. (author), Williams, P. (author), Ockels, W.J. (author)
Non-powered flight vehicles such as kites can provide a means of transmitting wind energy from higher altitudes to the ground via tethers. At Delft University of Technology, construction and testing of such a high altitude wind machine is ongoing. The concept is called the Laddermill. It generates energy by pulling a line under high tension from...
conference paper 2008
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Williams, P. (author), Lansdorp, B. (author), Ockels, W.J. (author)
Kite systems have the potential to revolutionize energy generation. Large scale systems are envisioned that can fly autonomously in “power generation” cycles which drive a ground-based generator. In order for such systems to produce power efficiently, good models of the system are required. This paper focuses on the development of optimal open...
conference paper 2008
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Ockels, W.J. (author), Ruiterkamp, R. (author), Lansdorp, B. (author)
A kite having a main body provided with at least a first and a second connection cable and at least one main pulling cable, the at least first and second connection cables each having a first and a second end, the first ends of the at least first and second connection cables being connected to the main body of the kite at different positions of...
patent 2008
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Breukels, J. (author), Ockels, W.J. (author)
This paper outlines a simulation of inflatable structures through the use of multi-body dynamics. Beams are approximated by rigid elements, connected by spherical joints and 3-dimensional torque vectors. The stiffness of the torque vector determines the bending behavior of the beam. The stiffness is a variable stiffness with deflection. It is...
conference paper 2008
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Terzi, A. (author), Ozcelik, D. (author), Ockels, W.J. (author)
The Superbus is a new public transport vehicle designed for fast, safe, comfortable, sustainable and flexible transportation. The vehicle travels at 250 km/h on its dedicated infrastructures and at conventional speed on existing roads, and transports passengers and goods from point to point, without the need to change transport during the...
conference paper 2008
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Terzi, A. (author), Ockels, W.J. (author)
The Superbus is a new public transportation non polluting, fast, economic, and appealing vehicle developed in The Netherlands as proof of concept for the implementation of a new transportation system which includes totally new infrastructure and logistics. This new vehicle is sustainable, can transport passengers and goods from point to point...
journal article 2008
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Terzi, A. (author), Ockels, W.J. (author)
The Superbus was introduced as one of the option for the Zuiderzeelijn : a fast connection between Amsterdam and Groningen and resulted to be the best option, the others being three different types of high speed train and the magnetic levitation train. In order evaluate the feasibility of its implementation, the Dutch Ministry of Transport and...
journal article 2008
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Van Herk, S. (author), Terzi, A. (author), Ockels, W.J. (author)
Vehicle handling and stability are very important at high speeds especially when the vehicle has a weight of about 6 times a normal luxury passenger car as in the case of the Superbus which travels at 250kph. In this paper the high speed performance of the Superbus will be analyzed. First the model will be discussed. Then, a number of the...
journal article 2008
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Kruijff, M. (author), Belokonov, I. (author), Van der Heide, E.J. (author), Ockels, W.J. (author), Gill, E. (author)
journal article 2008
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Podgaets, A.R. (author), Ockels, W.J. (author)
A new innovative approach to sailing has been proposed by TU Delft. It allows sailing in any desired direction, including straight into the wind. The concept consists of generating energy with a sky sail and then using it in an electric motor of the ship. The paper describes a mathematical model of laddermill sail.
conference paper 2007
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Podgaets, A.R. (author), Ockels, W.J. (author)
Laddermill flight control problem with closed loop is considered in this paper. Laddermill is an alternative concept for energy production using high altitude kites. The kites have been simulated as rigid bodies and the cable as a thin elastic line. Euler angles and cable speed are controls. Flight control is written as a fusion of two...
conference paper 2007
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Breukels, J. (author), Ockels, W.J. (author)
For the purpose of ultimately building a fully dynamic simulation of kites, an investigation is launched into a viable model of the cable with which the kite is attached to the ground. In the model proposed in this paper, only the slow modes of motion are taken into account due to the fact that only the slow motions have a real effect on the...
conference paper 2007
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Podgaets, A.R. (author), Ockels, W.J. (author)
Laddermill sail is an innovative approach to propel the ship with the power generated by kites. The first Laddermill system is currently being designed however existing mathematical models of the system produce different optimal recommendations. Thus a decision has been made to step back and to take a closer look at the mathematical models of...
conference paper 2007
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Ockels, W.J. (author)
From his personal experience during a space flight (Challenger 1985) onward, the author has been struck repeatedly by the remarkable influence of Earth's environment on life, in particular by its most inevitable elements: time and gravity. Our life might be peculiar to the local Earth conditions, and not cosmic per se. In this article the...
conference paper 2007
Searched for: faculty:"Aerospace%5C%2BEngineering"
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