Simulation of the experimental data from WINDII flown on the UARS/NASA satellite

Article Abstract:

The WINDII instrument (Wind Imaging Interferometer)is dedicated to the measurement of the temperature and wind in the upper Earth's atmosphere. It was launched with the NASA-Upper Atmosphere Research Satellite on September 12, 1991. It analyzes the natural emission lines of the atmosphere by an interferometric method to extract the temperature and wind information. Such a mission requires building the instrument, preparing its modes of operation, its scientific data processing, and evaluating its performance. To achieve these last tasks, simulated data are needed. Which is why we have developed a quite extensive code of simulation which consists of several models: instrument, atmosphere to be observed (temperature, wind, and intensity), orbit and attitude, and instrument noises. The simulated data have permitted the evaluation of certain instrument effects and suggested some improvements of design. The effects of the various sources of noise have been derived allowing the study of the scientific data processing algorithms and evaluation of their performance. Simulation of such a space instrument has been seen as an essential step in the design of the mission. (Reprinted by permission from the publisher)

Industrial research, Technical, Satellites (Astronomical bodies), Temperature, Research and Development, Satellites

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NASA Numerical Aerodynamic Simulation Facility

Article Abstract:

The Numerical Aerodynamic Simulation (NAS) Facility is being constructed by NASA's Ames Research Center. It will house the world's most powerful supercomputer system. The NAS system will run at one billion computations in 1988; ten billion calculations per second is the goal for 1990s. Cray Research's Cray 2 supercomputer will form the heart of the initial NAS system. Faster supercomputers will be incorporated as they become available. These supercomputers will be used to solve complex aerodynamical equations.

Supercomputers, Aerodynamics, Mainframe computers, Supercomputer, Networks, Future Technologies, Mainframe Computer, Scientific Research, Facility Construction

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Simulation at NASA Ames Research Center

Article Abstract:

Two new aircraft simulators and an air traffic control simulator have been acquired by NASA at their Ames Research Center at Moffett Field, California. One of the main areas of study will be human error factors. NASA's Vertical Motion Simulator is already in place and is simulating helicopter liftoffs and landings. The system is run by a a CDC 7600 computer. A photograph of one of NASA's flight simulators, and a diagram of the same simulators are presented.

Computers, Digital computers, Air traffic control, Aerospace engineering, Training, Flight Simulator, Aircraft

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