Engineering topics
Bhandari, P.
Publications and source records attributed to Bhandari, P..
Sample Tube Sealing for Future Proposed Mars Sample Return Missions
A key premise of a proposed Sample Caching Rover, a crucial element of the proposed Mars Sample Return (MSR) campaign, is that the samples could be packaged and left on Mars for an extended period of time (at least five Mars years) without loss of scientific value (Fig. 1). The MEPAG E2E-iSAG (2011) concluded that the single most important factor in preserving the scientific integrity of the samples during the interval between their collection and their analysis is effective sealing of the samples.
Sorption coolers using a continuous cycle to produce 20 K for the Planck flight mission
Two sorption coolers using hydrogen as the working fluid are currently being fabricated and assembled for flight delivery by the Jet Propulsion Laboratory (JPL). Being vibration free, scalable and with the capability for the cold end to be remotely located from the warm spacecraft are the major advantages of this class of cryo-coolers. These systems have been designed to provide a total cooling capacity (per cooler) of 1 W at a cold end temperature less than 19 K. They will be used for the Planck surveyor mission (2007 launch). In this paper we present the level Of maturity of the hydrogen sorption cooler technology at JPL by describing the design and how it has been validated at the subsystem and system levels.
Performance of hydride activated gas gap heat switches in the Planck sorption cryocooler
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20 K continuous cycle sorption coolers for the Planck flight mission
In this paper we present the level of maturity of the hydrogen sorption cooler technology at JPL by describing the design and how it has been validated at the subsystem and system levels. In addition, we will describe how such systems could be advantageously used for other space missions with similar needs and cooler attributes.
Advanced mechanically pumped thermal control loops for future spacecraft
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Novel long-life mechanical pump for spacecraft thermal control
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Planck engineering breadboard sorption cooler test results over its entire operating range
JPL is developing a continuous hydrogen sorption cryocooler for the ESA Planck mission to measure the anisotropy in the cosmic microwave background.
Evaluation of hydride compressor elements for the Planck sorption cryocooler
Hydrogen sorption crycoolers are being developed for the European Space Agency Planck mission to provide nominal 19 K cooling to instruments for measuring the temperature anisotropy of the cosmic microwave background with extreme sensitivity and resolution.
Initial test performance of a closed-cycle continuous hydrogen sorption cooler, the Planck sorption breadboard cooler
JPL is developing a continuous hydrogen sorption cryocooler for the ESA Planck mission, which will measure the anisotropy in the cosmic microwave background.
Test performance of a closed cycle continuous hydrogen sorption cryocooler
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Characterization and lifecycle testing of Hydride compressor elements for the Planck sorption cryocooler
JPL is developing two continuous 20 K nominal sorption-based coolers for the European Space Agency (ESA) Planck mission.
Performance, reliability and life issues for components of the Planck Sorption Cooler
Continuous-duty hydrogen sorption cryocoolers are being developed for the European Space Agency (ESA) Planck mission. To achieve an acceptable level of performance and robust operation with these hydride refrigerators during flight, detailed investigations have been performed on the sorbent materials and on critical hardware components.
Characterization and lifecycle testing of hydride compressor elements for the Planck Sorption Cryocooler
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Performance, reliability and life issues for components of the Planck sorption cooler
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