Low Thrust
Low-thrust tour of the main belt asteroids
... The low-thrust transfer to asteroid Flora is included in the ...the low-thrust transfer is optimised with an indirect optimal control method and ...using low-thrust propulsion ...
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Automatic trajectory planning for low-thrust active removal mission in Low-Earth Orbit
... When the corrective term is not taken into account the averaged analytical propagation gives an error with respect to the numerical propagation, as shown in Fig. 11. When using the corrective term δr for r, however, the ...
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Multi-objective optimisation of constellation deployment using low-thrust propulsion
... This work presents an analysis of the deployment of future constellations using a com- bination of low-thrust propulsion and natural dynamics. Different strategies to realise the transfer from the launcher ...
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CAMELOT-Computational-Analytical Multi-fidElity Low-thrust Optimisation Toolbox
... a low-thrust transfer by FABLE and locally ...the low-thrust transfer between all the pairs of objects in the database and for different values of the time of flight and initial mass of the ...
12
Combined high and low-thrust geostationary orbit insertion with radiation constraint
... propulsion thrust, assuming two QinetiQ T6 electric propulsion thrusters, with the mass inserted into GTO, the spacecraft wet mass, being varied from 2000 – 9100 ...and low-thrust transfer offers a ...
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Robust optimisation of low-thrust interplanetary transfers using evidence theory
... (18) is an approximated expression that does not include the direct effect of the thrust on the variation of L. This approximation provides acceptable results for control acceleration levels that are typical of ...
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CAMELOT - computational-analytical multi-fidelity low-thrust optimisation toolbox
... the low-thrust transfer between the previously de- fined asteroids ...null thrust to maximum thrust and Off nodes define the switching point from maximum thrust to null thrust ...
10
Extension of the proximity-quotient control law for low-thrust propulsion
... The proximity-quotient control law, or Q-law, was first proposed by Petropoulos [6] in 2003 to generate first guess approximations for propellant-optimal, low-thrust transfers between two Keplerian orbits. ...
10
Artificial three-body equilibria for hybrid low-thrust propulsion
... In this paper, we investigate a new concept for creating AEPs in the CRTBP using these two low thrust propulsion systems (solar sail and SEP) simultaneously. Such a hybrid of sail/SEP spacecraft is termed a ...
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Designing displaced lunar orbits using low-thrust propulsion
... T he use of solar electric propulsion (SEP) technology is now a realistic option for designing trajectories for interplanetary missions, while solar sail technology is currently under development. This paper covers the ...
11
Displaced geostationary orbits using hybrid low-thrust propulsion
... hybrid low-thrust propulsion, a complementary combination of Solar Electric Propulsion (SEP) and solar sailing, are investigated to increase the capacity of the geostationary ring that is starting to get ...
18
Improved shaping approach to the preliminary design of low-thrust trajectories
... This paper presents a general framework for the development of shape-based approaches to low-thrust trajectory design. A novel shaping method, based on a three dimensional description of the trajectory in ...
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Survey of highly non-Keplerian orbits with low-thrust propulsion
... sail low thrust propulsion systems have their own advantages and ...continuous low thrust indefinitely (in theory, at least – in practice, long-term degradation of the optical surface may ...
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Direct transcription of low-thrust trajectories with finite trajectory elements
... maximum thrust, ∆V, total impulse, time of transfer, etc.). Thus, the use of low-fidelity solutions is not always ...a low-thrust trajectory into a multi-burn transfer to generate a ...
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Displaced geostationary orbits using hybrid low-thrust propulsion
... hybrid low-thrust control outperforms the pure SEP case both in terms of payload mass capacity and mission lifetime for all displacements ...Hybrid low-thrust control provides lifetimes of 10 ...
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Extension of Martian orbits using continuous low-thrust propulsion
... continuous low-thrust propulsion to create a new set of Martian orbits for improved remote sensing, while maintaining the zero change in argument of periapsis condition essential to Molniya-like ...
18
Analytical, circle-to-circle low-thrust transfer trajectories with plane change
... This paper presents, for the first time, a fully analytical derivation of an approximately time-optimal transfer from a circular orbit, within the Ecliptic plane, at 1 astronomical unit, au, to a circular, ...
25
Hybrid low-thrust transfers to eight-shaped orbits for polar observation
... optimal low-thrust transfers from low Earth orbit (LEO) to these eight-shaped ...on low-thrust transfers to eight-shaped orbits by Senent and co-authors: 11 like the work by Senent, ...
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Static highly elliptical orbits using hybrid low-thrust propulsion
... The complementary nature of the two propulsion systems enables a new range of missions in which continuous low-thrust is required. These hybrid solar sail / SEP systems have been proposed for various ...
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Static highly elliptical orbits using hybrid low-thrust propulsion
... Visibility analysis is once again conducted to 55deg neglecting the restrictions to minimize radiation to determine the number of spacecraft required in this case. As explained previously, to avoid performing an orbital ...
22