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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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NASA's Preparations for ESA's L3 Gravitational Wave Mission
Telescope Subsystem - Jeff Livas (GSFC): Demonstrate pathlength stability, straylight and manufacturability. Phase Measurement System - Bill Klipstein (JPL): Key measurement functions demonstrated. Incorporate full flight functionality. Laser Subsystem - Jordan Camp (GSFC): ECL master oscillator, phase noise of fiber power amplifier, demonstrate end-to-end performance in integrated system, lifetime. Micronewton Thrusters - John Ziemer (JPL): Propellant storage and distribution, system robustness, manufacturing yield, lifetime. Arm-locking Demonstration - Kirk McKenzie (JPL): Studying a demonstration of laser frequency stabilization with GRACE Follow-On. Torsion Pendulum - John Conklin (UF): Develop U.S. capability with GRS and torsion pendulum test bed. Multi-Axis Heterodyne Interferometry - Ira Thorpe (GSFC): Investigate test mass/optical bench interface. UV LEDs - John Conklin+ (UF): Flight qualify UV LEDs to replace mercury lamps in discharging system. Optical Bench - Guido Mueller (UF): Investigate alternate designs and fabrication processes to ease manufacturability. LISA researchers at JPL are leading the Laser Ranging Interferometer instrument on the GRACE Follow-On mission.
Entry, Descent, and Landing Performance for a Mid-Lift-to-Drag Ratio Vehicle at Mars
In an effort to mature the design of the Mid-Lift-to-Drag ratio Rigid Vehicle (MRV) candidate of the NASA Evolvable Mars Campaign (EMC) architecture study, end-to-end six-degree-of-freedom (6DOF) simulations are needed to ensure a successful entry, descent, and landing (EDL) design. The EMC study is assessing different vehicle and mission architectures to determine which candidate would be best to deliver a 20 metric ton payload to the surface of Mars. Due to the large mass payload and the relatively low atmospheric density of Mars, all candidates of the EMC study propose to use Supersonic Retro-Propulsion (SRP) throughout the descent and landing phase, as opposed to parachutes, in order to decelerate to a subsonic touchdown. This paper presents a 6DOF entry-to-landing performance and controllability study with sensitivities to dispersions, particularly in the powered descent and landing phases.
Summary of Results from the Risk Management Program for the Mars Microrover Flight Experiment
This paper summarizes the activites and results of the effort to conduct a low-cost, yet meaningful risk management program for the MFEX, which was originally designated as a high risk payload.
A Reusable, Real-Time Spacecraft Dynamics Simulator
DARTS Shell (Dshell) is a multi-mission spacecraft simulator for development, test, and verification of flight software and hardware.
Simulation of Mars Surface Conditions for Characterization of the Mars Rover Thermal Response
This paper describes the mechanical equipment used to produce a simulated Martian surface environment, including wind, in a vacuum chamber, and discusses the results of tests using this equipment.
Effects of Electrostatically Charged Dust on Solar Array Performance in a Simulated Mars Environment
The environment near the Martian surface consists of a low-pressure carbon dioxide atmosphere which probably contains airborne electrostatically charged dust particles. It has been hypothesized that this dust might be attracted to operating solar cells, consequently obscuring light and reducing solar array power output. Results are presented of experiments of a simulated Mars environment.
Simulation of Airbag Impact Dynamics for Mars Landing
The use of airbags to attenuate the impact during landing on mars is discussed.
Sojourner Mars Rover Thermal Performance
This paper summarizes the Rover's design and performance as well as post-mission model correlation.
Data Analysis Pipeline Management With Ziggy
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Radiometrically Accurate Hyperspectral Measurements for Benchmarking and Inter-Calibration
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