Space transfer with ground-based laser/electric propulsion

Landis, Geoffrey A.; Stavnes, Mark W.; Oleson, Steve; Bozek, J. M.

doi:10.2514/6.1992-3213

Cited by 15 publications

(8 citation statements)

References 14 publications

(19 reference statements)

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“…Since Problem (P3) is convex and satisfies the Slater's condition [18], it has a zero duality gap and thus can be solved using the Lagrange duality method. 4 Thus, we introduce two non-negative dual variables, λ and µ, associated with the harvested power constraint and transmit power constraint in (P3), respectively. The optimal solution to Problem (P3) is then given by the following theorem in terms of λ * and µ * , which are the optimal dual solutions of Problem (P3) (see Appendix B for details).…”

Section: Separated Receiversmentioning

confidence: 99%

MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer

Zhang

2011

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

876

2,057

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This paper studies the performance limits of multiantenna wireless broadcasting systems for simultaneous information and power (energy) transfer. For the purpose of exposition, a three-node network is investigated, in which one receiver harvests energy and another receiver decodes information separately from the signals broadcast by a common transmitter. Two scenarios are examined, where the information and energy receivers are separated and see different channels from the transmitter, or colocated and see the same channel from the transmitter. For the case of separated receivers, we derive the optimal transmission strategies to achieve different tradeoffs for maximal information rate versus energy transfer, which are characterized by the boundary of a so-called rate-energy (R-E) region. For the case of co-located receivers, we show an outer bound for the achievable R-E region, due to the potential limitation that practical circuits for harvesting energy from radio signals are not yet able to decode the information. Under such constraint, we propose two practical receiver designs for the co-located receivers, namely, time switching and power splitting, and characterize their achievable R-E regions by comparing with the outer bound.978-1-4244-9268-8/11/$26.00 ©2011 IEEE This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE Globecom 2011 proceedings.

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Section: Separated Receiversmentioning

confidence: 99%

MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer

Zhang

2011

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

876

2,057

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“…A less mature technology for supplying power to a spacecraft at 4 AU distance would be a laser electric propulsion system, such as proposed by Landis et al [34] where power is beamed over planetary distances and converted into electricity via solar arrays. Taking a sample specific mass for the power conversion system of 0.25 kg/kW from Brophy [35], it would result in a mass of 96 kg.…”

Section: Spacecraft Mass [Kg] 399mentioning

confidence: 99%

Project Lyra: Sending a spacecraft to 1I/’Oumuamua (former A/2017 U1), the interstellar asteroid

Hein¹,

Perakis²,

Eubanks³

et al. 2019

Acta Astronautica

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The first definitely interstellar object 1I/'Oumuamua (previously A/2017 U1) observed in our solar system provides the opportunity to directly study material from other star systems. Can such objects be intercepted? The challenge of reaching the object within a reasonable timeframe is formidable due to its high heliocentric hyperbolic excess velocity of about 26 km/s; much faster than any vehicle yet launched. This paper presents a high-level analysis of potential near-term options for a mission to 1I/'Oumuamua and potential similar objects. Launching a spacecraft to 1I/'Oumuamua in a reasonable timeframe of 5-10 years requires a hyperbolic solar system excess velocity between 33 to 76 km/s for mission durations between 30 to 5 years. Different mission durations and their velocity requirements are explored with respect to the launch date, assuming direct impulsive transfer to the intercept trajectory. For missions using a powered Jupiter flyby combined with a solar Oberth maneuver using solid rocket boosters and Parker Solar Probe heatshield technology, a Falcon Heavy-class launcher would be able to launch a spacecraft of dozens of kilograms towards 1I/'Oumuamua, if launched in 2021. An additional Saturn flyby would allow for the launch of a New Horizons-class spacecraft. Further technology options are outlined, ranging from electric propulsion, and more advanced options such as laser electric propulsion, and solar and laser sails. To maximize science return decelerating the spacecraft at 'Oumuamua is highly desirable, due to the minimal science return from a hyper-velocity encounter. Electric and magnetic sails could be used for this purpose. It is concluded that although reaching the object is challenging, there seem to be feasible options based on current and nearterm technology.

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“…First studies of optimization problems for electric-propulsion spacecraft using simplified models of real gravity fields produced a number of analytic solutions, which facilitated engineering research. Due to this historical phenomenon, at the current stage, which is undoubtedly timely [36,39,40,48,50,53,61,68,72,73,75,76,78,82], the practical development of advanced orbital transfer electric-propulsion vehicles leans upon an unusually and favorably solid theoretical footing.…”

mentioning

confidence: 97%

Optimal low-thrust orbital transfers in a central gravity field

Kiforenko

2005

Int Appl Mech

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The results of studying some problems of optimization of low-thrust transfers between arbitrary elliptic orbits in a Newtonian gravity field are expounded. An approximate solution obtained by the averaging method is presented. Analytical solutions of the averaged equations are given for a wide class of maneuvers. The problem of constructing numerical solutions to the exact equations of motion of a spacecraft between high orbits is discussed

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Space transfer with ground-based laser/electric propulsion

Abstract: A new method for providing power to space vehicles consists of using ground-based lasers to beam power to photovoltaic receivers in space. This can be used as a power source for electrically propelled orbital transfer vehicles. Paper AIAA-92-3213, presented at the AIAA/SAE/ASME

Cited by 15 publications

References 14 publications

MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer

MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer

Project Lyra: Sending a spacecraft to 1I/’Oumuamua (former A/2017 U1), the interstellar asteroid

Optimal low-thrust orbital transfers in a central gravity field

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