Now showing items 39-58 of 117

    • Implementation of Wireless TPS Sensors 

      Atkinson, David; Swanson, Greg; Schlee, Justin (Georgia Institute of Technology, 2008-06-24)
      The initial development of a wireless TPS sensor system has proposed many inquiries to the requirements and benefits compared to the wired technology presently used for flight. The University of Idaho and NASA Ames have ...
    • In-situ Cryogenic Single-Event Effects Testing of High-Speed SiGe BiCMOS Devices 

      Walker, D. Greg; Black, Jeffrey D.; Pellish, Jonathan A.; Alles, Michael L.; Reed, Robert A.; Ramachandran, Vishwanath (Georgia Institute of Technology, 2008-06-25)
      We present details of a first-of-a-kind system that has been custom-designed to enable in-situ single-event (SE) testing at cryogenic temperatures. The system is capable of using either liquid nitrogen (LN2, 77K) or liquid ...
    • Instrument Accommodation on the Pioneer Venus and Galileo Probes 

      Bienstock, Bernard J. (Georgia Institute of Technology, 2008-06-24)
      Probe missions afford participating scientists the opportunity to perform in-situ measurements of atmospheric properties as well as planetary and satellite imaging. Extreme environments, limited volumes, modest levels of ...
    • Introducing PESST: A Conceptual Design and Analysis Tool for Unguided/Guided EDL Systems 

      Otero, Richard; Grant, Michael; Steinfeldt, Brad; Braun, Robert D. (Georgia Institute of Technology, 2008-06-24)
      The Planetary Entry Systems and Synthesis Tool (PESST) has been under development at the Space Systems Design Laboratory (SSDL) for several years. This framework has the capability to estimate the performance and mass of ...
    • Japanese Entry/Reentry Capsules: Past, Present, and Future 

      Kawaguchi, Jun'ichiro; Ishii, Nobuaki; Abe, Takashi; Yamada, Tetsuya; Inatani, Yoshifumi (Georgia Institute of Technology, 2008-06-24)
      Japanese reentry and entry capsule missions together with related technology development in the past, present, and future are surveyed in the paper. The EXPRESS was an international collaborative mission among Germany, ...
    • Key Features of the Entry, Descent, and Landing Repository 

      Martinez, Elmain (Georgia Institute of Technology, 2008-06-24)
      This poster will illustrate the key features of the Entry, Descent, and Landing Repository (EDL-R) web application. Features of keen interest, such as security, multiple search methods, the submission process, and automatic ...
    • A Laboratory System for Simulation of Extreme Atmospheric Conditions in the Deep Atmospheres of Venus, Jupiter, and Beyond 

      Karpowicz, Bryan M.; Steffes, Paul G.; Hanley, Thomas R. (Georgia Institute of Technology, 2008-06-25)
      A new atmospheric simulator, in operation and developed at Georgia Tech, now offers a flexible platform for simulating deep planetary atmospheres. In its current configuration, the laboratory system has been designed to ...
    • Low Temperature Mobility and Mechanisms 

      Richter, Lutz (Georgia Institute of Technology, 2008-06-21)
      Low temperature mechanisms: No universally accepted definition, but: environmental temperature < Earth ambient (which can be as low as -50 C). Typical cases: Mars surface missions (operation down to -90 C environmental ...
    • Low-Temperature Electronics 

      Cressler, John D. (Georgia Institute of Technology, 2008-06-21)
    • Marco Polo: A Sample Return Mission to a Primitive NEO 

      Barucci, Antonella; Agnolon, David; Koschny, Detlef; Escorial, Diego; Ritter, Heiko; Romstedt, Jens; Ferracina, L.; Khan, M.; Coste, P.; Falkner, Peter; Drai, R. (Georgia Institute of Technology, 2008-06-26)
      Marco Polo is a Near-Earth Object (NEO) sample return mission currently studied by the European Space Agency (ESA). The intention is to perform this mission in collaboration with the Japanese Aerospace Exploration Agency ...
    • Mars Entry Atmospheric Data System (MEADS) Requirements and Design for the Mars Science Laboratory (MSL) 

      Novak, Frank; Hutchinson, Mark; Mitchell, Michael; Munk, Michelle Marie; Parker, Peter (Georgia Institute of Technology, 2008-06-25)
      Each vehicle that lands on Mars provides a unique opportunity to study the atmospheric entry environment. Taking measurements of this environment will enable a better understanding of vehicle performance and design margins. ...
    • Mars Sample Return Mission Terminal Rendezvous Requirement 

      Gibbings, Alison (Georgia Institute of Technology, 2008-06-24)
      Any perceived Mars Sample Return (MSR) mission is of both scientific and technological importance. Various commercial and research based organisations have invested considerable amounts of effort and resources to study and ...
    • Mars Science Laboratory: The Next Rover 

      Meyer, Michael (Georgia Institute of Technology, 2008-06-26)
      The Mars Science Laboratory rover represents firsts in many aspects for interplanetary exploration. To get the rover to the planet's surface, the rover is winched down from the thrusters, substituting wheels for the usual ...
    • Mars' Atmosphere: Comparison of Entry Profiles with Numerical Models 

      Murphy, James R.; Chizek, Malynda; Buzzard, Stephen S. (Georgia Institute of Technology, 2008-06-24)
      As planetary probes enter an atmosphere, they capture measurements which provide thermodynamic information about the atmosphere, but only within a narrow vertical column within that atmosphere over a limited extent of time. ...
    • Mass Advantage of Titan Aerocapture 

      Strange, Nathan; Bairstow, Sarah; Spilker, Thomas (Georgia Institute of Technology, 2008-06-24)
      NASA's 2007 Titan Explorer study employed Titan aerocapture to place a spacecraft in orbit around Titan, while NASA's 2008 Titan / Saturn System Mission (TSSM) study enters Titan orbit propulsively. These two studies may ...
    • A Method for Balloon Trajectory Control 

      Aaron, K. M.; Nock, K. T.; Heun, M. K. (Georgia Institute of Technology, 2008-06-21)
      A balloon trajectory control system is discussed that is under development for use on NASA's Ultra Long Duration Balloon Project. The trajectory control system exploits the natural wind field variation with altitude to ...
    • Miniature Probes for Planetary Atmospheric Exploration: Where Less Is More 

      Colaprete, Anthony (Georgia Institute of Technology, 2008-06-23)
    • Missions in Low T Environments: Architectures, Issues, Failures 

      Ball, Andrew J. (Georgia Institute of Technology, 2008-06-21)
    • Modeling of Lunar Dust Contamination Due to Plume Impingement 

      Woronowicz, Michael Stanley (Georgia Institute of Technology, 2008-06-25)
      Historical data from the Apollo missions indicate the ubiquitous presence of lunar dust caused a number of troubling performance issues with mechanisms, optical devices, and thermal control devices, among other things [1]. ...
    • Multi-Mission Earth Entry Vehicle Design Trade Space and Concept Development Strategy 

      Maddock, Robert (Georgia Institute of Technology, 2008-06-26)
      In recent years the sample return mission concept has gradually grown increased favor over in-situ missions. The successes of the Stardust and Genesis missions have clearly highlighted the advantages of bringing samples ...