The MESSENGER mission to Mercury: Development history and early mission status

McNutt, R. L.; Solomon, Sean C.; Gold, R. E.; Leary, James C.

doi:10.1016/j.asr.2005.05.044

Cited by 53 publications

(26 citation statements)

References 20 publications

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“…The original goal of "a total instrument mass and power of less than 0.5 kg and 0.5 W" resulted in a design known colloquially as "the hockey puck" due to the cylindrical aperture/detector/time-of-flight (TOF) section that has about the same proportions and size as a regulation ice hockey puck. Little from a second PIDDP effort was available for incorporation into the MESSEN-GER flight hardware given the timing of MESSENGER's selection for flight (McNutt et al 2006). Some improvements were possible for PEPSSI due to work under this second grant prior to the selection of New Horizons for flight (McNutt et al 1996;Andrews et al 1998).…”

Section: Previous Similar Instrumentationmentioning

confidence: 99%

The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission

et al. 2008

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The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) comprises the hardware and accompanying science investigation on the New Horizons spacecraft to measure pick-up ions from Pluto's outgassing atmosphere. To the extent that Pluto retains its characteristics similar to those of a "heavy comet" as detected in stellar occultations since the early 1980s, these measurements will characterize the neutral atmosphere of Pluto while providing a consistency check on the atmospheric escape rate at the encounter epoch with that deduced from the atmospheric structure at lower altitudes by the ALICE, REX, and SWAP experiments on New Horizons. In addition, PEPSSI will characterize any extended ionosphere and solar wind interaction while also characterizing the energetic particle environment of Pluto, Charon, and their associated system. First proposed for development for the Pluto Express mission in September 1993, what became the PEPSSI instrument went through a number of development stages to meet the requirements of such an instrument for a mission to Pluto while minimizing the required spacecraft resources. The PEPSSI instrument provides for measurements of ions (with compositional information) and electrons from 10 s of keV to ∼1 MeV in a 160°× 12°fan-shaped beam in six sectors for 1.5 kg and ∼2.5 W.

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Section: Previous Similar Instrumentationmentioning

confidence: 99%

The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission

et al. 2008

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“…It is now shown possible to provide this base iteratively by incorporating the in-situ densities directly into the UCSD 3-D reconstruction technique. This has application when extending remote-sensing analysis to in-situ measurements from spacecraft such as STEREO or the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission (McNutt et al, 2006), or for that matter from measurements by future spacecraft such as the proposed NASA Solar Probe Lite or ESA's Solar Orbiter. On average, the in-situ measurements must fit those observations remotely-sensed wherever they are determined.…”

Section: Discussionmentioning

confidence: 99%

Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations

et al. 2010

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The University of California, San Diego (UCSD) three-dimensional (3-D) timedependent tomography program has been used successfully for a decade to reconstruct and forecast coronal mass ejections from interplanetary scintillation observations. More recently, we have extended this tomography technique to use remote-sensing data from the Solar Mass Ejection Imager (SMEI) on board the Coriolis spacecraft; from the Ootacamund (Ooty) radio telescope in India; and from the European Incoherent SCATter (EISCAT) radar telescopes in northern Scandinavia. Finally, we intend these analyses to be used with observations from the Murchison Widefield Array (MWA), or the LOw Frequency ARray (LO-FAR) now being developed respectively in Australia and Europe. In this article we demonstrate how in-situ velocity measurements from the Advanced Composition Explorer (ACE) space-borne instrumentation can be used in addition to remote-sensing data to constrain the time-dependent tomographic solution. Supplementing the remote-sensing observations with in-situ measurements provides additional information to construct an iterated solar-wind parameter that is propagated outward from near the solar surface past the measurement location, and throughout the volume. While the largest changes within the volume are close to the radial directions that incorporate the in-situ measurements, their inclusion significantly reduces the uncertainty in extending these measurements to global 3-D reconstructions that are distant in time and space from the spacecraft. At Earth, this can provide a finely-tuned real-time measurement up to the latest time for which in-situ measurements are available, and enables more-accurate forecasting beyond this than remote-sensing observations alone allow.

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“…The most practical applications are fuels for reaction control systems of artificial satellites, auxiliary power units for spacecraft like the Space Shuttle, and propellants of rockets and spacecraft like the MESSENGER orbiting the planet Mercury [1][2][3]. The fighter jet F-16 Fighting Falcon also employs hydrazine as the fuel of the aircraft's emergency power unit.…”

Section: Introductionmentioning

confidence: 99%

“…The fighter jet F-16 Fighting Falcon also employs hydrazine as the fuel of the aircraft's emergency power unit. The hypergolic property by mixing with N 2 O 4 , ammonium nitrate, and energetic ionic liquids realizes simple ignition systems suitable to space vehicles [1][2][3][4][5][6]. Another potential application is a fuel for basic fuel cells [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Reversible Gelation System for Hydrazine Based on Polymer Absorbent

Ochiai

Shimada

2018

Technologies

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Reversible absorbents for safe storage of toxic hydrazine were developed. Various cross-linked polar polymers were examined as absorbents for hydrazine and its 35% aqueous solution, and structurally similar polymers were found to be suitable for effective absorption. Namely, cross-linked polyacrylamide (CPAM) was most effective among examined various hydrophilic polymers. CPAM absorbed 43-and 31-fold heavier amounts of absolute hydrazine and 35% aqueous solution, respectively, by simple soaking. Absorbed hydrazine could be quantitatively released either by N 2 gas flow and compression, and the resulting absorbent reabsorbed hydrazine without loss of the absorption ability. The absorption ability was higher than conventional covalent storages, and the release protocol, without dissolution of the absorbent, are suitable for storage systems in hydrazine fuel cells.

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The MESSENGER mission to Mercury: Development history and early mission status

Cited by 53 publications

References 20 publications

The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission

The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission

Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations

Reversible Gelation System for Hydrazine Based on Polymer Absorbent

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