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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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Novel Missions for Next Generation Microsatellites: The Results of a Joint AFRL-JPL Study
The development of technologues for miniature, low-mass, high density components and of systems that efficiently utilize these technologies has enabled a path to the next generation of highly capable microsatellites in the range of 10 - 100-kg.
JPL Cryocooler Development and Test Program: A 10 year Overview
In the 1998 timeframe increasing numbers of proposed space-instrument programs within NASA and the Balistic Missile Defense Organization (BMDO) were in need of high-reliablility, long-life, low-vibration space cryocoolers.
Software Architecture Themes in JPL's Mission Data System
The rising frequency of NASA mission launches has highlighted the need for improvements leading to faster delivery of mission software without sacrificing reliability.
The NASA-JPL Advanced Propulsion Program
Paper covers The NASA Advanced Propulsion Technology Program and some of its implications, applications, and activities.
Software Architecture Themes in JPL's Mission Data System
The rising frequency of NASA mission launches has highlighted the need for improvements leading to faster delivery of mission software without sacrificing reliability.
Recent Radiation Effects Activities at JPL: Coping with COTS
The rediation effects and testing programs in place at the Jet Propulsion Laboratory support the insertion of traditional, advanced, and emerging microelectronic and photonic technologies in NASA systems through research and testing that enhances the radiation hardness assurance (RHA) of these technologies. With the decreasing availability of radiation hardened electronics and the new NASA paradigm of faster, more aggressive and less expensive space missions, there has been an increasing emphasis on using high performance commercial microelectronic parts and circuits in NASA spacecraft.
NDSC and the JPL Stratospheric Lidars
The Network for the Detection of Stratospheric Change (NDSC) is an international cooperation providing a set of high-quality, remote-sensing instruments at observing stations around the globe. A brief description of the NDSC and its goals is presented. Lidar has been selected as the NDSC instrument for measurements of stratospheric profiles of ozone, temperature, and aerosol. The Jet Propulsion Laboratory has developed and implemented two stratospheric lidar systems for NDSC. These are located at Table Mountain, California and at Mauna Loa, Hawaii. These systems, which utilize different absorption lidar, Rayleigh lidar, Raman lidar, and backscatter lidar, to measure ozone, temperature, and aerosol profiles in the stratosphere are briefly described. Examples of results obtained for both long-term and individual profiles are presented.
JPL Space Robotics: Present Accomplishments and Future Thrusts
This paper presents and overview of the telerobotic research and development activities underway at the Jet Propulsion Laboratory in support of NASA thrusts in telerobotic servicing of free flying satellites and platforms, planetary exploration, and dual use technologies enhancing both NASA ground applications and commercial competitiveness.
Optical Pathlength Control Experiment on JPL Phase B Testbed
An experimental implementation of a nanometer level optical pathlength control for large baseline space interferometry is presented. The pathlength compensation system is installed on a large flexible experimental truss, thus structural motions play a dominant role in the control system design. The associated control structure interaction problem is addressed to maintain the optical pathlength within the prescribed variation of 10-15 nanometer rms. By a successful blend of a structural control for damping augmentation and a direct pathlength control for the pathlength compensation, the optical pathlength variation has been maintained within 6 nonometer rms under the laboratory ambient disturbance and within 9 nonmeter rms under a severe forced resonant disturbance.