Solar sail spacecraft are proposed to accomplish body-fixed hovering missions over
elongated asteroids. The body-fixed hovering flight is to maintain a fixed position relative to …

The focus of this paper is to connect the rotating mass dipole with natural elongated bodies.
The dipole system is consisted with two point masses connected with a massless rod in a …

This paper proposes a new nonlinear guidance algorithm applicable for asteroid both
hovering and landing. With the new guidance, a spacecraft achieves its target position and …

This paper analyzes the problem of finding the optimal steering law for a flat solar sail whose
propulsive acceleration is described by an optical force model. In particular, the problem …

Solar radiation pressure is a major orbital perturbation for missions to small bodies like
asteroids and binary asteroid systems. This Paper studies the utilization of solar radiation …

Frozen orbits are ideal options for global map** and observation. In this paper, a design
and maintenance method of frozen orbit is presented and applied to the small body …

Low-cost solar sailing CubeSats for deep-space exploration are relatively inexpensive, have
a short development time, and can be launched more often. However, attitude control of a …

This paper presents a planetary elliptic displaced orbit (PEDO) for a solar sail with reflectivity
control devices (RCDs). The problem of multiple solar sail formation flying in which the …

Solar-photon sails can be useful for missions towards and about asteroids. Indeed, for the
interplanetary transfer phase, missions to asteroids often require a large variation in …

Artificial equilibrium points near irregular-shaped asteroids are generated by using
continuous thrust to enlarge the feasible regions of body-fixed hovering missions. The …