Irradiation Flux Modelling for Thermal–Electrical Simulation of CubeSats: Orbit, Attitude and Radiation Integration

Filho, Edemar Morsch; Seman, Laio Oriel; Rigo, Cezar Antônio; Nicolau, Vicente de Paulo; Ovejero, Raúl García; Leithardt, Valderi Reis Quietinho

doi:10.3390/en13246691

Cited by 13 publications

(4 citation statements)

References 46 publications

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“…The methodology presented by [ 19 ] was used for power input calculation in each satellite considering orbital parameters from the CubeSat FloripaSat-I [ 4 ], as shown in Table 3 . Finally, the spacecraft’s attitude adopted here is the NADIR where one specific face of the satellite is always directed towards the Earth’s surface.…”

Section: Resultsmentioning

confidence: 99%

“…The available power from the solar panels in Equation ( 1 ) is obtained through the irradiance model developed in [ 19 ]. The model provides the flux of irradiation

(W/m 2 ) obtained from a combination of orbital parameters and spin of the CubeSat (also known as attitude), which is here combined with the solar panel’s area (

) of each side ( w ) and the efficiency (

) of the cells.…”

Section: Problem Statementmentioning

confidence: 99%

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An Energy-Aware Task Scheduling for Quality-of-Service Assurance in Constellations of Nanosatellites

Seman

Ribeiro

Rigo

et al. 2022

Sensors

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When managing a constellation of nanosatellites, one may leverage this structure to improve the mission’s quality-of-service (QoS) by optimally distributing the tasks during an orbit. In this sense, this research proposes an offline energy-aware task scheduling problem formulation regarding the specifics of constellations, by considering whether the tasks are individual, collective, or stimulated to be redundant. By providing such an optimization framework, the idea of estimating an offline task schedule can serve as a baseline for the constellation design phase. For example, given a particular orbit, from the simulation of an irradiance model, the engineer can estimate how the mission value is affected by the inclusion or exclusion of individuals objects. The proposed model, given in the form of a multi-objective mixed-integer linear programming model, is illustrated in this work for several illustrative scenarios considering different sets of tasks and constellations. We also perform an analysis of the Pareto-optimal frontier of the problem, identifying the feasible trade-off points between constellation and individual tasks. This information can be useful to the decision-maker (mission operator) when planning the behavior in orbit.

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Section: Resultsmentioning

confidence: 99%

“…The available power from the solar panels in Equation ( 1 ) is obtained through the irradiance model developed in [ 19 ]. The model provides the flux of irradiation

(W/m 2 ) obtained from a combination of orbital parameters and spin of the CubeSat (also known as attitude), which is here combined with the solar panel’s area (

) of each side ( w ) and the efficiency (

) of the cells.…”

Section: Problem Statementmentioning

confidence: 99%

An Energy-Aware Task Scheduling for Quality-of-Service Assurance in Constellations of Nanosatellites

Seman

Ribeiro

Rigo

et al. 2022

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…As observed in Equation (30), the boundary condition is a function of the temperature at photovoltaic panels (T w (t)), a variable to be solved in the thermal model. More information on irradiance models can be found in [29].…”

Section: S R Sat H Orbit Shadow Earthmentioning

confidence: 99%

An Integrated Thermal-Electrical Model for Simulations of Battery Behavior in CubeSats

et al. 2021

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This work presents an integrated thermal-electrical simulation model, capable of taking into account the thermal and electrical effects of the battery and photovoltaic panels for each instant of time in a given orbit and attitude. Using the physical equations that govern the thermal and electrical models involved during a CubeSat operation, the proposed integrated model can estimate the temperature and energy conditions of the battery, not only in an isolated way but also in considering the mutual effects on the system. Besides, special attention is given to photovoltaic panels used in the energy harvesting process, whose performance is affected by irradiance and temperature along the orbit. The integrated model can be useful for engineers when developing the subsystems of their CubeSats, taking into account, for example, the battery temperature control through a heater. Simulations were performed to illustrate the functioning of the proposed model with variations in the power requirements of its modules and the temperature of the battery throughout the orbit, and a heater’s influence on it.

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“…Meshed antennas are proposed in [17] and [18], showing a fully solar-panel integrated circularly polarized patch for CubeSat ground/intersatellite communication [17] and three proximity coupled patches that achieve large bandwidth thanks to the slight difference in size. A dual-band stacked circularly polarized patch antenna is proposed in [19]. Veljovic and Skrivervik design a low-profile antenna, achieving wideband behavior through aperture coupled feeding [20].…”

Section: Introductionmentioning

confidence: 99%

A Curved 3D-Printed S-Band Patch Antenna for Plastic CubeSat

Muntoni

Montisci

Melis

et al. 2022

IEEE Open J. Antennas Propag.

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The new space economy paradigm demands for cost-effective systems for its development. Plastic CubeSats are appealing candidates. To enable the use of this new generation of space systems, the challenge of designing suitable communication sub-systems must be faced. In this work, a 3D-printed ABS antenna easily embeddable in a plastic CubeSat is proposed. The 3D-printed material has been characterized in terms of dielectric, mechanical and thermal properties, and the compliance with space requirements has been assessed. In particular, thermogravimetric and calorimetric tests have been carried out. Static and dynamic mechanical analysis were performed. To comply with the stringent weight and space requirements, the unique antenna design of a curved stacked patch has been proposed. The patch covers the uplink (2.025-2.11 GHz) and downlink (2.2-2.29 GHz) bands for Telemetry Tracking and Command (TT&C) applications, with an overall bandwidth of about 300 MHz (14%). Additionally, taking advantage of the curved shape, the proposed antenna shows a size reduction of the resonant length of about 34%. The size of the antenna is 71.5 x 71.5 x 13 mm 3 and is characterized by a weight of only 51 g . Also, in silico tests, by relying on the measured physical properties and a non-linear numerical model, have been carried out to assess the performances of the final antenna layout during a typical CubeSat mission. The proposed design strategy could be used to develop plastic CubeSats embedding performing antennas.

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Irradiation Flux Modelling for Thermal–Electrical Simulation of CubeSats: Orbit, Attitude and Radiation Integration

Cited by 13 publications

References 46 publications

An Energy-Aware Task Scheduling for Quality-of-Service Assurance in Constellations of Nanosatellites

An Energy-Aware Task Scheduling for Quality-of-Service Assurance in Constellations of Nanosatellites

An Integrated Thermal-Electrical Model for Simulations of Battery Behavior in CubeSats

A Curved 3D-Printed S-Band Patch Antenna for Plastic CubeSat

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