American Institute of Aeronautics and Astronautics

Displaying 1-5 of 5 results

  • White Papers // Jan 2011

    Phase Jitter Transfer in High Speed Data Links

    Phase Locked Loops (PLLs) in 10 Gb/s and faster data links are low phase noise devices. Characterization of their phase jitter transfer functions is difficult because the intrinsic noise of the PLLs is comparable to the phase noise of the reference clock signal. The problem is solved by using a...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Jan 2010

    Parallel Implementation of the Direct Simulation Monte Carlo Method For Shared Memory Architectures

    Parallel implementation of a three-dimensional Direct Simulation Monte Carlo (DSMC) code is detailed that employs shared memory system using Open Multi-Processing (OpenMP). Several techniques to optimize the serial implementation of the DSMC method are also discussed. The synchronizations in OpenMP, as well as the related critical sections, have been identified...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Sep 2009

    Integrated Solution for Aircraft Data Visualization and Simulation Image Generation

    Modern software and hardware solutions available for engineering flight simulation are divided in commonly distributed desktop data and aircraft visualization and high fidelity image generators for pilot in the loop simulation. Recent performance improvements in computer hardware, especially the availability of affordable 3D accelerated graphics boards, allow high-quality real-time three-dimensional...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Aug 2009

    Unified Communications for Space Inventory Management

    To help assure mission success for long-duration exploration activities, NASA is actively pursuing wireless technologies that promote situational awareness and autonomy. Wireless technologies are typically extensible, offer freedom from wire tethers, readily support redundancy ; offer potential for decreased wire weight, and can represent dissimilar implementation for increased reliability. In...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Jan 2003

    System Design Overview of the Mars Pathfinder Parachute Decelerator Subsystem

    This paper presents from a "first principles" approach how the Viking parachute stability problem was identified and the design solution proposed that would both satisfy Viking design heritage and MPF EDL stability requirement. The design goal of the MPF PDS became to provide a modified Viking DGB parachute configuration which...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Sep 2009

    Integrated Solution for Aircraft Data Visualization and Simulation Image Generation

    Modern software and hardware solutions available for engineering flight simulation are divided in commonly distributed desktop data and aircraft visualization and high fidelity image generators for pilot in the loop simulation. Recent performance improvements in computer hardware, especially the availability of affordable 3D accelerated graphics boards, allow high-quality real-time three-dimensional...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Aug 2009

    Unified Communications for Space Inventory Management

    To help assure mission success for long-duration exploration activities, NASA is actively pursuing wireless technologies that promote situational awareness and autonomy. Wireless technologies are typically extensible, offer freedom from wire tethers, readily support redundancy ; offer potential for decreased wire weight, and can represent dissimilar implementation for increased reliability. In...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Jan 2011

    Phase Jitter Transfer in High Speed Data Links

    Phase Locked Loops (PLLs) in 10 Gb/s and faster data links are low phase noise devices. Characterization of their phase jitter transfer functions is difficult because the intrinsic noise of the PLLs is comparable to the phase noise of the reference clock signal. The problem is solved by using a...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Jan 2010

    Parallel Implementation of the Direct Simulation Monte Carlo Method For Shared Memory Architectures

    Parallel implementation of a three-dimensional Direct Simulation Monte Carlo (DSMC) code is detailed that employs shared memory system using Open Multi-Processing (OpenMP). Several techniques to optimize the serial implementation of the DSMC method are also discussed. The synchronizations in OpenMP, as well as the related critical sections, have been identified...

    Provided By American Institute of Aeronautics and Astronautics

  • White Papers // Jan 2003

    System Design Overview of the Mars Pathfinder Parachute Decelerator Subsystem

    This paper presents from a "first principles" approach how the Viking parachute stability problem was identified and the design solution proposed that would both satisfy Viking design heritage and MPF EDL stability requirement. The design goal of the MPF PDS became to provide a modified Viking DGB parachute configuration which...

    Provided By American Institute of Aeronautics and Astronautics