Searched for: mods_originInfo_publisher_s%3A%22American%255C%2BInstitute%255C%2Bof%255C%2BAeronautics%255C%2Band%255C%2BAstronautics%22
(1 - 17 of 17)
document
Tuinstra, M. (author), Probsting, S. (author), Scarano, F. (author)
The feasibility of aeroacoustic noise predictions based on Particle Image Velocimetry (PIV) measurements is studied. For this purpose, experiments are conducted on a sharp trailing edge (TE) flow developed along a flat plate at free stream velocity of 15m/s. The acoustic emissions were characterized in the NLR Small Anechoic Wind Tunnel (KAT) by...
conference paper 2013
document
Lackner, M.A. (author), van Kuik, G.A.M. (author)
Modern wind turbines have been steadily increasing in size, and have now become very large, with recent models boasting rotor diameters greater than 120 m. Reducing the loads experienced by the wind turbine rotor blades is one means of lowering the cost of energy of wind turbines. Wind turbines are subjected to significant and rapid fluctuating...
conference paper 2009
document
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
document
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
document
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
document
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
document
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
document
Loeven, G.J.A. (author), Bijl, H. (author)
Due to manufacturing tolerances, the airfoil of a wing after production is never exactly the same as the designed airfoil. Also during operation the geometry may change due to aerodynamic loading, icing or wear of the construction. The geometry can, therefore, be treated as uncertain. Uncertainties in the geometry of an airfoil are expected to...
conference paper 2008
document
Souverein, L.J. (author), van Oudheusden, B.W. (author), Scarano, F. (author)
conference paper 2008
document
Slingerland, R. (author), Verstraeten, J.G. (author)
conference paper 2008
document
Berends, J.P.T.J. (author), Van Tooren, M.J.L. (author), Schut, E.J. (author)
conference paper 2008
document
Schut, E.J. (author), Van Tooren, M.J.L. (author), Berends, J.P.T.J. (author)
conference paper 2008
document
Roling, P.C. (author), Cooper, R. (author), Curran, R. (author)
conference paper 2008
document
Slingerland, R. (author), Zandstra, S. (author), Scholz, D. (author), Seeckt, K. (author)
conference paper 2008
document
Breukels, J. (author), Ockels, W.J. (author)
This paper presents the various structural considerations in designing a large inflatable kiteplane. Material issues are addressed and a departure from conventional inflatable kites is suggested by using a single material instead of a structural foil and an internal gas barrier. Furthermore, rigging the kite using bridle lines is given attention...
journal article 2007
document
Breuer, J. (author), Ockels, W. (author), Luchsinger, R.H. (author)
The paper describes the new concept Tensairity which can be used to significantly improve the load bearing capacity of inflatable wings. The basic principle of Tensairity is to use an inflatable structure to stabilize conventional compression and tension elements. So far, Tensairity has been mainly used in civil engineering application like roof...
journal article 2007
document
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
Searched for: mods_originInfo_publisher_s%3A%22American%255C%2BInstitute%255C%2Bof%255C%2BAeronautics%255C%2Band%255C%2BAstronautics%22
(1 - 17 of 17)