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    Engineering the Future of Full-Scale Propulsion Testing

    Ryan, H. M. / Solano, W. / Holland, R. et al. | NTRS | 2001
    major test facilites for large-scale propulsion devices, and summarizes the varied nature of the recent test projects conducted at the Stennis ...

    Autonomous Science Decision Making for Mars Sample Return

    Roush, Ted L. / Gulick, V. / Morris, R. et al. | NTRS | 1999
    analytical instruments intended to evaluate the chemical and mineralogical nature of the environment(s) that they encounter. Historically, mission ...

    Holarchical Systems and Emotional Holons : Biologically-Inspired System Designs for Control of Autonomous Aerial Vehicles

    Ippolito, Corey / Plice, Laura / Pisanich, Greg | NTRS | 2003
    present cooperative design considerations for robotic explorers based on the holarchical nature of biological systems and communities. Second, an ...

    Steps Towards the Standardization of a More Efficient Uplink Protocol and Code

    Kazz, Greg J. / Greenberg, Edward | NTRS | 2006
    their highly interactive nature and the need to send files in both directions. Therefore, it is prudent for standards bodies i.e., CCSDS to ...

    Experimental Studies Of Pilot Performance At Collision Avoidance During Closely Spaced Parallel Approaches

    Pritchett, Amy R. / Hansman, R. John | NTRS | 1997
    parallel runway in Instrument Meteorological Conditions (IMC). The time-critical nature of a parallel approach results in key design issues for ...

    Earth Studies Using L-band Synthetic Aperture Radar

    Rosen, Paul A. | NTRS | 1999
    L-band SAR has played an important role in studies of the Earth by revealing the nature of the larger-scale (decimeter) surface features ...

    Issues in Airborne Systems for Closely-Spaced Parallel Runway Operations

    Pritchett, A. / Carpenter, B. / Asari, K. et al. | NTRS | 1995
    parallel runways in Instrument Meteorological Conditions (IMC). The time-critical nature of a parallel approach results in key design issues for ...

    Meteor Outbursts and Storms from the Spacecraft Hazard Perspective

    Cooke, William / Moser, Danielle / Suggs, Rob | NTRS | 2004
    result in the loss of a vehicle, there were a few spacecraft anomalies attributed to Leonid strikes, and the nature of these will be commented ...

    As-Flown Shuttle Micro-Meteoroid Orbital Debris (MMOD) Assessment History

    Hyde, James L. / Christiansen, Eric L. / Lear, Dana M. et al. | NTRS | 2012
    The final flight of the Space Shuttle program was completed on July 21st of 2011. The reusable nature of the Orbiter vehicles has provided ...

    ISS Payload Operations: The Need for and Benefit of Responsive Planning

    Nahay, Ed / Boster, Mandee | NTRS | 2000
    resources onboard the ISS. It restricts flexibility in payload operations, which is inconsistent with the dynamic nature of the ISS science program ...

    Design and Testing of an Ultra-Light Weight Perching System for Sloped or Vertical Rough Surfaces on Mars

    Backus, Spencer / Izraelevitz, Jacob / Quan, Justin et al. | NTRS | 2020
    unmodified young features (e.g. walls of fresh craters or polar pits that are actively expanding). However the steep nature of these sites makes ...

    Communication-Aware Orbit Design for Small Spacecraft Swarms around Small Bodies

    Rahmani, Amir / Croix, Jean-Pierre de la / Mote, Mark et al. | NTRS | 2020
    communications; we then leverage the differentiable nature of the proposed algorithm to accelerate a gradient-based global search algorithm. Numerical ...

    The Effect of Sensor Failure on the Attitude and Rate Estimation of MAP Spacecraft

    Bar-Itzhack, Itzhack Y. / Harman, Richard R. | NTRS | 2003
    universe. The nature of the problem is described, two algorithms are suggested, an observability study is carried out and real MAP data are used to ...

    Solar Sail GN and C Model Comparisons

    Heaton, Andrew F. | NTRS | 2004
    . Guidance, navigation, and control of solar sails is a key part of this effort. The large flexible structure and optical nature of solar sails ...

    The Cassini-Huygens Mission Overview

    Vandermey, Nancy / Paczkowski, Brian G. | NTRS | 2006
    additional instruments that provided in-situ sampling of the atmosphere and surface of Titan. The multi-national nature of this mission poses ...

    Preliminary Thermal-Mechanical Sizing of Metallic TPS: Process Development and Sensitivity Studies

    Poteet, Carl C. / Abu-Khajeel, Hasan / Hsu, Su-Yuen | NTRS | 2002
    coupled nature of the analysis requires an iterative analysis process, which will be described herein. Findings from the sensitivity analysis are ...

    Principal Components Analysis of Triaxial Vibration Data From Helicopter Transmissions

    Tumer, Irem Y. / Huff, Edward M. | NTRS | 2001
    Research on the nature of the vibration data collected from helicopter transmissions during flight experiments has led to several crucial ...

    Flexible Wing Model for Structural Sizing and Multidisciplinary Design Optimization of a Strut-Braced Wing

    Gern, Frank H. / Naghshineh, Amir H. / Sulaeman, Erwin et al. | NTRS | 2000
    calculated using a newly developed structural weight analysis module considering the special nature of strut-braced wings. A specially developed ...

    Evaluation of Vortex Chamber Concepts for Liquid Rocket Engine Applications

    Trinh, Huu Phuoc / Knuth, Williams / Michaels, Scott et al. | NTRS | 2000
    chamber schemes potentially have a number of advantages over conventional chamber methods. Due to the nature of the vortex flow, relatively cooler ...

    (abstract) A Low-Cost Mission to 2060 Chiron Based on the Pluto Fast Flyby

    Stern, S. A. / Salvo, C. G. / Wallace, R. A. et al. | NTRS | 1994
    -sized bodies, and the origin of primitive bodies and the giant planets. Owing to Chiron's large size (180nature, and unusual ...