Juno radiation design and implementation

Kayali, S.; McAlpine, William J.; Becker, Heidi N.; Scheick, Leif

doi:10.1109/aero.2012.6187013

Cited by 16 publications

(7 citation statements)

References 5 publications

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“…In addition to this forced minimum, there may be reasons to add additional constraints beyond what is simply physically allowed. The intense radiation environment of Jupiter may be a concern, and so an absolute minimum might be set, to avoid needing a radiation vault such as that on the Juno spacecraft [34]. In contrast, McGranaghan et al [23] do not restrict closest approach in any way, other than requiring it to be larger than the planet radius.…”

Section: A Mako Proceduresmentioning

confidence: 99%

Return to the Kuiper Belt: Launch Opportunities from 2025 to 2040

Zangari

Finley

Stern

et al. 2019

Journal of Spacecraft and Rockets

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Nomenclature AU = astronomical unit, average Earth -Sun distance B = impact parameter C3 = excess launch energy ∆V = change in velocity required to alter a spacecraft's trajectory KBO = Kuiper Belt Object PC = plane crossing r p = planet radius r q = distance from a planet at periapse = gravitational constant * planet mass ! = arrival velocity of a spacecraft = angle between incoming and outgoing velocity vectors during a swingby Preliminary spacecraft trajectories for 45 Kuiper Belt Objects (KBOs) and Pluto suitable for launch between 2025 and 2040 are presented. These 46 objects comprise all objects with H magnitude < 4.0 or which have received a name from the International Astronomical Union as of May 2018. Using a custom Lambert solver, trajectories are modeled after the New Horizons mission to Pluto-Charon, which consisted of a fast launch with a Jupiter gravity assist. In addition to searching for Earth-Jupiter-KBO trajectories, Earth-Saturn-KBO trajectories are examined, with the option to add on a flyby to either Uranus or Neptune. With a single Jupiter gravity assist, all 45 KBOs and Pluto can be reached within a 25 year maximum mission duration. A more limited number can be reached when non-Jupiter flybys are added, and the KBOs that can be reached via these alternate routes are listed. In most cases, a single Jupiter flyby is the most efficient way to get to the Kuiper Belt, but the science return from revisiting Saturn, Uranus, or Neptune may add substantial value to a mission, so alternate flybys should be considered.

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Section: A Mako Proceduresmentioning

confidence: 99%

Return to the Kuiper Belt: Launch Opportunities from 2025 to 2040

Zangari

Finley

Stern

et al. 2019

Journal of Spacecraft and Rockets

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“…In the last few decades, the Galileo and Juno mission have been successfully completed, and more Jupiter spacecraft will be launched in the future. However, Jupiter has an extremely harsh radiation environment [2], which leads to various space radiation damage affect on the spacecraft, including total ionizing dose (TID) effect [3], single event effects (SEE) [4] and displacement damage (DD) [5], among which TID is one of the main reasons for spacecraft damage.…”

Section: Introductionmentioning

confidence: 99%

Optimization of radiation shielding scheme for Jupiter spacecraft based on genetic algorithm

Guan

Liu

et al. 2023

Third International Conference on Digital Signal and Computer Communications (DSCC 2023)

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Jupiter is one of the targets for deep space exploration, but it has a harsher radiation environment than Earth. In order to reduce the damage of the radiation environment to the spacecraft, the radiation shielding scheme should be optimized. In this paper, the main optimization objective is to reduce the total radiation dose after shielding, and we balanced the areal density, thickness and shielding effect. Combined with genetic algorithm and MULASSIS, the optimal design of multilayer radiation shielding scheme of Jupiter spacecraft is studied. Through this method, the optimal shielding scheme - Mg-Pb-Mg-Al four-layer shielding structure is obtained. Compared with the single-layer shielding scheme of Galileo and other spacecraft, the optimal multi-layer shielding scheme can reduce the material mass by at least 14.4%. This design method could also be combined with the actual Jupiter exploration mission, providing a reference for the shielding design of deep space exploration spacecraft in the future.

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“…For example, in the field of space and avionics, the materials composing aircraft or spaceships also suffer from radiation damage during their flights. Therefore, engineers need to test space components and materials during their development projects [2]. Other examples can be found in industry, where irradiation experiments are used for various purposes such as for food sterilization [3] or seed treatment [4].…”

Section: Introductionmentioning

confidence: 99%

IEDM: An Ontology for Irradiation Experiments Data Management

Gkotse

Jouvelot

Ravotti

2019

Lecture Notes in Computer Science

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Irradiation experiments (IE) are an essential step in the development of High-Energy Physics (HEP) particle accelerators and detectors. They assess the radiation hardness of materials used in HEP experimental devices by simulating, in a short time, the common long-term degradation effects due to their bombardment by high-energy particles. IEs are also used in other scientific and industrial fields such as medicine (e.g., for cancer treatment, medical imaging, etc.), space/avionics (e.g., for radiation testing of payload equipment) as well as in industry (e.g., for food sterilization). Usually carried out with ionizing radiation, these complex processes require highly specialized infrastructures: the irradiation facilities. Currently, hundreds of such facilities exist worldwide.To help develop best practices and promote a computer-assisted handling and management of IEs, we introduce IEDM, a new OWL-based Irradiation Experiment Data Management ontology. This paper provides an overview of the classes and properties of IEDM. Since one of the key design choices for IEDM was to maximize the reuse of existing foundational ontologies such as the Ontology of Scientific Experiments (EXPO), the Ontology of Units of Measure (OM) and the Friend-of-a-Friend Ontology (FOAF), we discuss the methodological issues of the integration of IEDM with these imported ontologies. We illustrate the use of IEDM via an actual IE recently performed at IRRAD, the CERN proton irradiation facility. Finally, we discuss other motivations for this work, including the use of IEDM for the generation of user interfaces for IE management, and their impact on our methodology.

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Juno radiation design and implementation

Cited by 16 publications

References 5 publications

Return to the Kuiper Belt: Launch Opportunities from 2025 to 2040

Return to the Kuiper Belt: Launch Opportunities from 2025 to 2040

Optimization of radiation shielding scheme for Jupiter spacecraft based on genetic algorithm

IEDM: An Ontology for Irradiation Experiments Data Management

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