The process of reconstructing inflation loads of Capsule Parachute Assembly System (CPAS) has been updated as the program transitioned to testing Engineering Development Unit (EDU) hardware. The equations used to reduce the test data have been re-derived based on the same physical assumptions made by simulations. Due to instrumentation challenges, individual parachute loads are determined from complementary accelerometer and load cell measurements. Cluster inflations are now simulated by modeling each parachute individually to better represent different inflation times and non-synchronous disreefing. The reconstruction procedure is tailored to either infinite mass or finite mass events based on measurable characteristics from the test data. Inflation parameters are determined from an automated optimization routine to reduce subjectivity. Infinite mass inflation parameters have been re-defined to avoid unrealistic interactions in Monte Carlo simulations. Sample cases demonstrate how best-fit inflation parameters are used to generate simulated drag areas and loads which favorably agree with test data.


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    Title :

    Reconstruction of Orion Engineering Development Unit (EDU) Parachute Inflation Loads


    Contributors:

    Conference:

    22nd AIAA Aerodynamic Decelerator Systems Technology Conference ; 2013 ; Daytona Beach, FL, United States


    Publication date :

    2013-03-25


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Reconstruction of Orion EDU Parachute Inflation Loads

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