Numerical study on low-velocity impact between asteroid lander and deformable regolith

X Zeng, Z Li, Q Gan, C Circi - Journal of Guidance, Control, and …, 2022 - arc.aiaa.org
Investigating the impact process between the hop** lander and the regolith surfaces is of
great significance for the in situ asteroid explorations. The high-efficiency description of the …

Mesh-based two-step convex optimization for spacecraft landing trajectory planning on irregular asteroid

Z Zhao, H Shang, C Liu, S **ao - Journal of Spacecraft and Rockets, 2024 - arc.aiaa.org
The problem investigated in this paper is how to rapidly optimize a landing trajectory on an
arbitrarily shaped asteroid, subject to practical constraints and a gravitational model suitable …

Four-dimensional trajectory planning algorithm for fixed-wing aircraft formation based on improved hunter—prey optimization

J Wei, H Fan, J Li - Electronics, 2023 - mdpi.com
The aircraft four-dimensional trajectory planning is an important technology for multiple
aircraft to achieve cooperation. However, the current four-dimensional trajectory planning …

Multi-constrained feedback guidance for mars pinpoint soft landing using time-varying sliding mode

Y Gong, Y Guo, Y Lyu, G Ma, M Guo - Advances in Space Research, 2022 - Elsevier
Taking into account the thruster performance (total thrust magnitude constraint and control
acceleration deviation) and glide-slope constraint, this paper presents two types of new …

Autonomous Helicopter Shipboard Recovery Flight Control Design Based on tau Theory

Q Kang, H Ji, Y Yuan, Y Ye - Aerospace Science and Technology, 2025 - Elsevier
This paper develops an autonomous flight control system to alleviate the heavy workload
involved in managing multiple emergencies during manned helicopter shipboard recovery …

Research on asteroid landing with a new flexible spacecraft

G Zhai, J Li, Y Sun, H Zheng - Journal of Aerospace Engineering, 2022 - ascelibrary.org
During soft landing on asteroids, the weak gravity and rugged terrain put the spacecraft at
risk of crashing and bouncing, such that a safe and accurate landing is essential for the …

Time-fixed glideslope guidance for approaching the proximity of an asteroid

J Wang, H Li, Z Lin, H Huo - Aerospace, 2021 - mdpi.com
The guidance and control problem of spacecraft approaching an asteroid using constant
continuous thrust is studied in this work. The range of interest is from hundreds of kilometers …

Research on Robust Navigation Algorithm for Soft Landing of Small Celestial Body

M Cao, X Wang, M Shi, Y Gao - 2021 4th World Conference on …, 2021 - ieeexplore.ieee.org
Based on the application background of autonomous navigation for soft landing of small
celestial bodies, this paper proposes a robust navigation algorithm for the difficult problems …

Estudio de la Teoría “Tau G improved” en aplicación de operaciones de proximidad y alcance con un cuerpo celeste

RA Valenzuela Najera - Instituto de Ingeniería y Tecnología, 2023 - cathi.uacj.mx
Antes de que una nave espacial alcance una posición estacionaria sobre un asteroide para
realizar tareas orbitales, se deben realizar operaciones de proximidad. Dado que los …