Mars Climate Engineering Using Orbiting Solar Reflectors

McInnes, Colin R.

doi:10.1007/978-3-642-03629-3_25

Cited by 4 publications

(10 citation statements)

References 12 publications

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“…solar sails, orbiting reflectors to increase the amount of sunlight ( [McInnes & Simmons(1992)], [Dankowicz(1994)], [McInnes(1999)], [McInnes(2010b)], [Bewick et al(2011)], [Salazar et al(2016a)]). These are basically polar circular orbits, displaced behind Earth along the Sun-Earth line due to the solar radiation force exerted on the space mirror surface, as shown in Fig.…”

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

“…In cylindrical polar coordinates (ρ p , θ p , z p ) the equations of motion for a perfect space mirror are [McInnes(2010b)…”

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

“…Additionally, a linear stability analysis has shown that the boundary ρ p = 4z p (dashed line in Fig. 11) separates the ρ p − z p plane into stable (ρ p > 4z p ) and unstable regions [McInnes(2010b)]. Therefore, circular polar orbits inside the stable region, will be defined as an initial state in the differential corrector method.…”

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

“…Thus, the differential corrector method permits to find a new set of displaced orbits in the Sun-Earth-reflector CRTBP. Previous works have only obtained this kind of orbits in the twobody problem, assuming fixed solar acceleration vector directed along the Sun-line, as was described previously ([Dankowicz(1994)], [McInnes(1999)], [McInnes(2010b)], [Bewick et al(2011)], [Salazar et al(2016a)]). Although linear stable circular polar orbits could be generated with any displacement z p in the two-body scenario, as shown in Fig.…”

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

“…increasing the length of daylights for electric power generation or lighting up the darks days in the winter ([Glaser(1968)], [Oberth(1972)], [Ehricke(1979)], [Canady & Allen(1982)], [Leary(1993)], [Frass(2013)]), or the so-called Mars climate engineering ([Oberg (1981)], [McKay et al(1991)], [Fogg(1995)], [Zubrin & McKay (1997)], [McInnes(2002a)], [McInnes(2010b)]), due to the great quantity of energy leverage delivered rapidly by the mirrors [Maunter & Parks(1990)]. Thus, large-scale solar reflectors seems to be a fascinating instrument to prevent the occurrence of cooling events that have taken place in the past.…”

Section: Introductionmentioning

confidence: 99%

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Periodic orbits for space-based reflectors in the circular restricted three-body problem

Salazar

McInnes

Winter

2016

Celest Mech Dyn Astr

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The use of space-based orbital reflectors to increase the total insolation of the Earth has been considered with potential applications in night-side illumination, electric power generation and climate engineering. Previous studies have demonstrated that families of displaced Earth-centered and artificial halo orbits may be generated using continuous propulsion, e.g. solar sails. In this work, a three-body analysis is performed by using the Circular Restricted Three Body Problem (CRTBP), such that, the space mirror attitude reflects sunlight in the direction of Earth's center, increasing the total insolation. Using the Lindstedt-Poincaré and differential corrector method, a family of halo orbits at artificial Sun-Earth L 2 points are found. It is shown that the third order approximation does not yield real solutions after the reflector acceleration exceeds 0.245 mm s −2 , i.e. the analytical expressions for the in-and out-of-plane amplitudes yield imaginary values. Thus, a larger solar reflector acceleration is required to obtain periodic orbits closer to the Earth. Derived using a two-body approach and applying the differential corrector method, a family of displaced periodic orbits close to the Earth are therefore found, with a solar reflector acceleration of 2.686 mm s −2 .

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Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

“…In cylindrical polar coordinates (ρ p , θ p , z p ) the equations of motion for a perfect space mirror are [McInnes(2010b)…”

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

Section: Displaced Earth-centered Orbitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Periodic orbits for space-based reflectors in the circular restricted three-body problem

Salazar

McInnes

Winter

2016

Celest Mech Dyn Astr

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Enhancing terrestrial solar power using orbiting solar reflectors

et al. 2022

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Intervening in Earth’s climate system through space-based solar reflectors

Salazar

McInnes

Winter

2016

Advances in Space Research

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Several space-based climate engineering methods, including shading the Earth with a particle ring for active cooling, or the use of orbital reectors to increase the total insolation of Mars for climate warming have been considered to modify planetary climates in a controller manner. In this study, solar reectors on polar orbits are proposed to intervene in the Earth's climate system, involving near circular polar orbits normal to the ecliptic plane of the Earth. Similarly, a family of displaced polar orbits (non-Keplerian orbits) are also characterized to mitigate future natural climate variability, producing a modest global temperature increase, again to compensate for possible future cooling. These include deposition of aerosols in the stratosphere from large volcanic events. The two-body problem is considered, taking into account the eects of solar radiation pressure and the Earth's J 2 oblateness perturbation.

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Mars Climate Engineering Using Orbiting Solar Reflectors

Cited by 4 publications

References 12 publications

Periodic orbits for space-based reflectors in the circular restricted three-body problem

Periodic orbits for space-based reflectors in the circular restricted three-body problem

Enhancing terrestrial solar power using orbiting solar reflectors

Intervening in Earth’s climate system through space-based solar reflectors

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