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Share  Title: Deployment of ANDE Satellites by STS-116

 
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The Atmospheric Neutral Density Experiment (ANDE) Risk Reduction Mission consists of two spherical spacecraft fitted with retro-reflectors for satellite laser ranging (SLR). Scientific objectives of the ANDE missions include monitoring total neutral density along the orbit for improved orbit determination of space objects, monitoring the spin rate and orientation of the spacecraft to better understand in-orbit dynamics, and to provide a test object for polarimetry studies. The mission will provide objects in low Earth orbit with well-determined ballistic coefficients and radar cross-sections for comprehensive atmospheric modeling. Each mission will include a passive and an active spherical spacecraft in a lead-trail orbit configuration. The passive sphere will be tracked with the Space Surveillance Network (SSN) and SLR to study atmospheric drag and in-track total density. The active sphere will have on-board instrumentation to measure atmospheric density and composition. The active sphere will monitor its position relative to the passive sphere to study drag models. The active satellites will communicate on-board data through a system of modulated retro-reflectors (MRR). Mission Objectives: Provide Total Atmospheric Density for Orbit Determination and Collision Avoidance Space to Ground Optical Communication Demo Validate Fundamental Theories on the Calculation of the Drag Coefficient Provide Calibration Object for Radar Fence Upgrade Establish a Method to Validate Neutral Density and Composition Derived from DMSP Sensors. Active Sphere Instrumentation: Modulating Retro-Reflector (MRR) Array Final layout analysis in progress One hemisphere densely populated One hemisphere with single MRR Thermal Control System (¡À 5 C) Thermal Monitoring System (TMS) ( ¡Ü 1C) Global Positioning Sensor (GPS) Wind and Temperature Spectrometer (WATS) (1-46 amu) Backup Communications System Photovoltaic Arrays Lithium Ion Batteries Passive Sphere Instrumentation: Retro-Reflector Array  

 
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Keywords
ANDE  Satellites  STS-116  STS116  STS  116  
 
 About This Video
 
 Subject Aeronautics and Astronautics
 Category Computer Simulations
 Duration 00:06:05
 Views 3447
 Added 08-01-08
 Contributor    autocrawler
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