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- Podgaets, A.R. (author), Ockels, W.J. (author) conference paper 2007
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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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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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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
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- Podgaets, A.R. (author), Ockels, W.J. (author) conference paper 2006
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- Lansdorp, B. (author), Ockels, W.J. (author), Ruiterkamp, R. (author) conference paper 2006
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Lansdorp, B. (author), Ruiterkamp, R. (author), Ockels, W. (author)Non-powered flight vehicles such as kites can provide a means of transmitting wind energy from higher altitudes to the ground via tethers. Although there is increased world wide interest for systems to extract wind energy from higher altitudes with kites, research into kite properties such as the coefficients and the stability is limited. Such...conference paper 2007
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- Breukels, J. (author), Ockels, W.J. (author) conference paper 2007
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Williams, P. (author), Lansdorp, B. (author), Ockels, W. (author)Tethered kite technology is one potential means of harnessing energy available in high altitude winds. In an efficient and practical system, the kite is required to fly in cyclic patterns that maximize net power produced per cycle. At the same time, the tether length must be controlled to ensure the system does not expend more energy than it...conference paper 2007
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Williams, P. (author), Lansdorp, B. (author), Ockels, W. (author)Tethered kite technology promises the enable the efficient extraction of energy from high altitude winds. One possible concept for converting the wind energy into electricity is to generate useful work at the ground by using a tether. The tether is able to drive a generator in one of two ways: either the tether is wound and unwound, or the...conference paper 2007
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- Williams, P. (author), Lansdorp, B. (author), Ockels, W. (author) conference paper 2007
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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), Ockels, W.J. (author)The tethered space elevator could provide a revolutionary means for enabling cheap transportation to geostationary altitude and beyond. Assuming that such a system can be built, one of the dynamic design problems is determining a means of moving the elevator along the tether so as to minimize the residual librational motion of the elevator...conference paper
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Antonelli, V. (author), Terzi, A. (author), Ockels, W. (author), Beukers, A. (author)The present paper presents the structural design of the Superbus. First the overall requirements are described and analyzed, with respect to loads (static and dynamic), stiffness and functional requirements. In order to fulfil the relative targets, two different solutions have been defined and analyzed in the preliminary design. From those, the...conference paper 2007
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- Podgaets, A.R. (author), Ockels, W.J. (author) conference paper 2006
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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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Breukels, J. (author), Ockels, W. (author)The Laddermill is an innovative concept for generating energy from wind using large kite-like wings on a tether. The wings are able to fly in both the regime of airplanes and kites. We therefore call these structures "kiteplanes". By providing a recurring motion with a large lift during ascending and a lower lift during descending, energy can be...conference paper 2005
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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), Lansdorp, B. (author) conference paper 2005
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- Williams, P. (author), Lansdorp, B. (author), Ockels, W. (author) conference paper 2007