Wubbo Johannes Ockels

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The three Spacelab D-1 Scientist Astronauts were exposed to a 11/2 h 3 g centrifuge run in the supine position, resulting in a linear 3 g acceleration in the x-direction. They used their space experience to evaluate their readapting to normal gravity and compared their observations with ‘Space Adaptation Syndrome’. After the centrifuge runs, the vestibular(More)
The scope of this paper is to illustrate a new concept of a multi-sensor system for obstacle detection, and collision avoidance by controlling the motion of the vehicle traveling at very high speed regimes, of the order of 250 km/h. The paper illustrates the primary requirement of safety for the vehicle and the passengers and presents the effects of(More)
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 approaches: design of(More)
This paper deals with assessing stability of optimal solutions. Two ways are considered: introducing stochastic stability based on Lyapunov's stability as constraints in a single-objective optimization problem and using it as a second objective. The problem from the field of wind energy is taken $optimization of electricity production with a novel wind(More)
  • W J Ockels
  • ESA bulletin. Bulletin ASE. European Space Agency
  • 1995
In the last week of November 1994, a different type of parabolic flight campaign took place: For the first time, students were given the unique opportunity of experiencing weightlessness. The campaign was part of the second European Week for Scientific Culture and the main goal was to motivate and educate the students rather than to obtain pure scientific(More)
The development of the ESA portable sleep restraint system is described. The system was developed to simulate certain earthbound sleep conditions in microgravity. The restraint is a bag made of two sheets of Nomex(R) cloth stretched over a tubular tension device and provides the astronaut with feedback pressure similar to bedding on Earth. The final(More)
  • W J Ockels
  • ESA bulletin. Bulletin ASE. European Space Agency
  • 1996
In conjunction with the European Commission's 'European Week for Scientific and Technological Culture' in November, ESA organised the second parabolic flight campaign for students. Students selected through a competition, were again given the unique opportunity of experiencing weightlessness as they performed their own scientific experiment during a(More)
[Abstract] This paper presents the results of wind measurements taken in the ASSET KiteLab. KiteLab is a test facility on the roof of the faculty building where experimental kites can be flown and tested. It is a controlled environment where sensors and cameras collect data during flight test operations. The wind data has been analyzed and together with(More)