241 to 250 of 257 Results
Jan 23, 2023
Josette Bellan, 2023, "Development of a hybrid particle-continuum solver for studying plume expansion into rarefied flows", https://doi.org/10.48577/jpl.S0W63K, AIAA SciTech 2023, JPL Open Repository
The direct simulation Monte Carlo (DSMC) method and unsteady Navier-Stokes (NS) are combined in a hybrid formulation with an ultimate aim to model positioning-rocket laminar jet expansion in the lunar atmosphere. The hybrid solver uses the Schwarz technique, a classical matching... |
Jan 23, 2023
Nathan Kinkaid, 2023, "Strain Measurement in Coilable Thin Composite Shells with Embedded Fiber Bragg Grating Sensors", https://doi.org/10.48577/jpl.IHECGA, AIAA SciTech 2023, JPL Open Repository
Progress towards the use of ultra-thin fiber Bragg grating sensors for the in-situ strain measurement of coilable thin composite shells is presented. The first part of this work presents the manufacturing procedure used in the construction of these composite shells with embedded... |
Jan 23, 2023
Disarro, Thomas P, 2023, "Technology Demonstration for System of Magnetically Aligning Reconfigurable Tiny Cube Satellites (SMARTCubeS)", https://doi.org/10.48577/jpl.I4MPGP, AIAA SciTech 2023, JPL Open Repository
The development of space-based deployable structures has traditionally been specific to unique mission objectives and constraints, resulting in high financial, temporal, and risk-based costs for single use structures. Recently, literature has considered methods for reducing these... |
Jan 23, 2023
Leila Meshkat, 2023, "Data Analysis and Pattern Recognition for Software Anomalies", https://doi.org/10.48577/jpl.FZIVJF, Reliability and Maintainability Symposium, RAMS 2023, JPL Open Repository
In this paper, we report on the preliminary results of a study that is underway to examine the software problem failure report data associated with a diverse set of NASA projects for insights into the processes, lessons learned for improving them, and predictive models to help de... |
Jan 23, 2023
Jonathan Soliman, 2023, "A Suite of Analyses and Tools Used to Lower Risk and Maximize Mission Success of Space Systems", https://doi.org/10.48577/jpl.WRD1YR, RAMS 2023 The 69th Annual Reliability and Maintainability Symposium, JPL Open Repository
In every design demanding a low-risk of anomalies, reliability analysis can add substantial value in the verification of project and design requirements. This is especially difficult when the mission environments are extreme, the hardware is predominately unserviceable and some c... |
Jan 21, 2023
Reza Ghaffarian, 2023, "Effect of Aging on BGA Solder Strengths & Thermal Cycles for Low Temp. Hybrid Assembly", https://doi.org/10.48577/jpl.PXX5LL, IPC APEX EXPO 2023, JPL Open Repository
This paper presents two key aspects of reliability of ball grid array (BGA) technologies: one aspect for high-reliability and the other one for commercial applications. For high reliability, it presents the effect of isothermal aging at BGA level to address burn-in requirement fo... |
Jan 15, 2023
Amir Rahmani, 2023, "ENABLING SPACE-BASED COMPUTED CLOUD TOMOGRAPHY WITH A MIXED INTEGER LINEAR PROGRAMMING SCHEDULER", https://doi.org/10.48577/jpl.blwyddzx, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
No abstract available. |
Jan 15, 2023
Nicholas Bradley, 2023, "PRE-LAUNCH ELECTRIC PROPULSION ERROR MODELS FOR PSYCHE NAVIGATION", https://doi.org/10.48577/jpl.6AMFHT, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
The Psyche mission is planned to travel to the main belt asteroid (16) Psyche, and will use Hall Effect thrusters for all deterministic thrusting. We present a substantive update to the navigation uncertainty model for the mission’s electric propulsion thrusting, greatly refining... |
Jan 15, 2023
Rush, Brian P, 2023, "Optical Navigation for the DARŢ Mission", https://doi.org/10.48577/jpl.UPERPU, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
The DART mission launched on November 24th, 2021. The goal of this technology demonstration mission was to test orbital deflection through kinetic impact as a method of defense against potential asteroid or comet hazards. DART successfully impacted the 180-meter-diameter asteroid... |
Jan 15, 2023
Stefano Campagnola, 2023, "Analysis of DV and eclipse duration for Crank-Over-the-Top and petal rotations in Europa Clipper moon tours", https://doi.org/10.48577/jpl.M1E6TL, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
Europa Clipper is the NASA’s next flagship mission; while in a Jupiter orbit, it will explore Europa with a moon tour that includes more than 45 Europa flybys. Crank-Over-the-Top and petal rotation are two specific sequences of flybys that mission designers utilize to develop moo... |
