Target selection and transfer trajectories design for exploring asteroid mission

Abstract

Technique of target selection and profiles of transfer trajectory for Chinese asteroid exploring mission are studied systemically. A complete set of approaches to selecting mission targets and designing the transfer trajectory is proposed. First, when selecting a target for mission, some factors regarded as the scientific motivations are discussed. Then, when analyzing the accessibility of targets, instead of the classical strategy, the multiple gravity-assist strategy is provided. The suitable and possible targets, taking into account scientific value and technically feasible, are obtained via selection and estimation. When designing the transfer trajectory for exploring asteroid mission, an approach to selecting gravity-assist celestial body is proposed. Finally, according to the mission constraints, the trajectory profile with 2-years ∆V-EGA for exploring asteroid is presented. Through analyzing the trajectory profile, unexpected result that the trajectory would pass by two main-belts asteroids is found. So, the original proposal is extended to the multiple flybys mission. It adds the scientific return for asteroid mission. exploring asteroid, target selection, multiple flybys, transfer trajectory Citation: Cui P Y, Qiao D, Cui H T, et al. Target selection and transfer trajectories design for exploring asteroid mission.

Research progress of autonomous planetary landing site assessment and selection

“…火星大气稀薄、不稳 定, 且表面附近伴有突风 [20] . 而小行星形状不规则、 引力弱、自旋状态复杂, 太阳光压、第三天体引力等 环境扰动对探测器作用明显 [21] . 受引力场建模误差、 环境扰动等因素共同影响, 探测器实际动力学模型存 在一定不确定性 [22] , 导致探测器实际运动可能与预设 情况间产生偏差.…”

Near-Earth Asteroid Surveillance Constellation in the Sun-Venus Three-Body System

“…An asteroid defense system can be modeled as an OODA chain, that is, observation (O), orientation (O), decision (D), and action (A). A number of technologies for asteroid defense have been investigated, including the asteroid detection and classification [16][17][18][19][20], the asteroid orbit determination (OD) [21][22][23], and the trajectory design for in situ exploration [24][25][26][27][28][29][30][31]. Several asteroid deflection and redirection strategies are proposed [32,33].…”

Asteroids Exploration Trajectory Optimal Design with Differential Evolution Based on Mixed Coding

“…Recently, there are some researches about the optimization design for the transfer trajectory to explore the asteroid missions. Cui et al proposed a complete set of approaches to selecting mission targets and designing the transfer trajectory by the multiple gravity assist strategy for exploring asteroid mission [11]. Qiao et al designed the transfer trajectory for rendezvous with asteroid Ivar by means of Earth gravity assist with deep space maneuver technology [12].…”