Swarm Of Lightsail Nanosatellites For Solar System Exploration

a) Schematic representation (not in scale) of the nanosatellite, comprising the lightsail (LS) and the payload (PL). b) Temperature analysis for different laser powers (P): 10 MW, 100 MW, 1 GW and 10 GW, the lightsail-payload distance d (PL) is fixed at 50 cm. c) Temperature analysis using a laser power of 10 GW varying the distance d (PL). d) The maps and the plot report the deformations and the average rotation, respectively, occurring on the lightsail as function of the distance d (PL).

This paper presents a study for the realization of a space mission which employs nanosatellites driven by an external laser source impinging on an optimized lightsail, as a valuable technology to launch swarms of spacecrafts into the Solar System.

Nanosatellites propelled by laser can be useful for the heliosphere exploration and for planetary observation, if suitably equipped with sensors, or be adopted for the establishment of network systems when placed into specific orbits. By varying the area-to-mass ratio (ie, the ratio between the sail area and the payload weight) and the laser power, it is possible to insert the spacecraft into different hyperbolic orbits with respect to Earth, thus reaching the target by means of controlled trajectories in a relatively short amount of time.

A mission involving nanosatellites of the order of 1 kg of mass is envisioned, by describing all the on-board subsystems and satisfying all the requirements in term of power and mass budget. Particular attention is paid to the telecommunication subsystem, which must offer all the necessary functionalities.

To fabricate the lightsail, the thin films technology has been considered, by verifying the sail thermal stability during the thrust phase. Moreover, the problem of mechanical stability of the lightsail has been tackled, showing that the distance between the ligthsail structure and the payload plays a pivotal role. Some potential applications of the proposed technology are discussed, such as the mapping of the heliospheric environment.

Giovanni Santi, Alain J. Corso, Denis Garoli, Giuseppe Emanuele Lio, Marco Manente, Giulio Favaro, Marco Bazzan, Giampaolo Piotto, Nicola Andriolli, Lucanos Strambini, Daniele Pavarin, Leonardo Badia, Remo Proietti Zaccaria, Philip Lubin, Roberto Ragazzoni, Maria G. Pelizzo

Subjects: Applied Physics (physics.app-ph); Instrumentation and Methods for Astrophysics (astro-ph.IM); Materials Science (cond-mat.mtrl-sci); Instrumentation and Detectors (physics.ins-det); Optics (physics.optics)
Cite as: arXiv: 2208.10980 [physics.app-ph] (or arXiv: 2208.10980v1 [physics.app-ph] for this version)
Submission history
From: Maria Guglielmina Pelizzo Prof.
[v1] Tue, 23 Aug 2022 13:55:14 UTC (4,065 KB)
Full paper https://arxiv.org/abs/2208.10980