|
|
|
|
|
Yuelong Luo, Xiuqiang Jiang, Suchuan Zhong, Yuandong Ji and Guohao Sun
Near-Earth asteroids are a great threat to the Earth, especially potential rendezvous and collision asteroids. To protect the Earth from an asteroid collision, it is necessary to investigate the asteroid defence problem. An asteroid terminal defence meth...
ver más
|
|
|
|
|
|
|
|
|
|
|
Pengfei Han, Qiguang He, Xiaowei Chen and He Lv
An asteroid impact can potentially destroy life on this planet. Therefore, asteroids should be prevented from impacting the Earth to impede severe disasters. Nuclear explosions are currently the only option to prevent an incoming asteroid impact when the...
ver más
|
|
|
|
|
|
|
|
|
|
|
Victor Bacu, Constantin Nandra, Adrian Sabou, Teodor Stefanut and Dorian Gorgan
Near-Earth Asteroids represent potential threats to human life because their trajectories may bring them in the proximity of the Earth. Monitoring these objects could help predict future impact events, but such efforts are hindered by the large numbers o...
ver más
|
|
|
|
|
|
|
|
|
|
|
Haohan Li and Xiyun Hou
Autonomous navigation and orbit determination are key problems of asteroid exploration missions. Inter-satellite range link is a type of measurement widely used in the orbit determination of Earth satellites, but not so widely used in missions around sma...
ver más
|
|
|
|
|
|
|
|
|
|
|
Arvind Mukundan, Akash Patel, Bharadwaj Shastri, Heeral Bhatt, Alice Phen and Hsiang-Chen Wang
From the farthest reaches of the universe to our own galaxy, there are many different celestial bodies that, even though they are very different, each have their own way of being beautiful. Earth, the planet with the best location, has been home to peopl...
ver más
|
|
|
|
|
|
|
|
|
|
|
Pureum Kim and Sang-Young Park
This study investigates the preliminary trajectory design for high-thrust missions to near-Earth asteroids (NEAs), considering distance and phase angle constraints during the approaching phase to enable pre-rendezvous optical navigation and the scientifi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Bo Ren, Yu Jiang, Hengnian Li and Chunsheng Jiang
This paper focuses on the existence and control of particular types of orbits around asteroid 4 Vesta, including Sun-synchronous orbits, orbits at the critical inclination, repeating ground-track orbits, and stationary orbits. J2, J3, and J4 terms are co...
ver más
|
|
|
|
|
|
|
|
|
|
|
Qingpeng Wen, Jun He and Feng Gao
Robots equipped with anchoring mechanisms have attractive applications in asteroid exploration. However, complex application scenarios bring great challenges to the modeling and control of anchoring mechanisms. This paper presents a grasping model and co...
ver más
|
|
|
|
|
|
|
|
|
|
|
Paula Melania Pasca, Florina Miere (Groza), Angela Antonescu, Luminita Fritea, Florin Banica, Simona Ioana Vicas, Vasile Laslo, Dana Carmen Zaha and Simona Cavalu
Azelaic acid (AA), as a natural product, was proven to be effective in targeting multiple causes of acne and related dermatological conditions, as it is well tolerated using different classical formulations (gel, cream, etc.). However, its limited aqueou...
ver más
|
|
|
|
|
|
|
|
|
|
|
Victor Pavlovich Chelomin, Andrey Alexandrovich Mazur, Valentina Vladimirovna Slobodskova, Sergey Petrovich Kukla and Nadezda Vladimirovna Dovzhenko
Microplastic pollution of the aquatic environment is one of the most serious environmental problems today. The potential environmental risks of such particles have become growing concerns in recent years, as direct or indirect exposure to these particles...
ver más
|
|
|
|
|
|
|
|
|
|
|
He Huang, Zejian Li, Zongyi Guo, Jianguo Guo, Le Suo and Haoliang Wang
This paper investigates the issue of balance control for reaction-wheeled inverted pendulum-type Cubli Rovers on asteroids, and an adaptive control scheme is proposed via the prescribed performance control technique. The main feature lies in the fact tha...
ver más
|
|
|
|
|
|
|
|
|
|
|
Weifeng Yan, Ruoyu Feng and Hexi Baoyin
Stable landing on asteroids is of considerable scientific and economic value but accompanied by huge difficulties. This paper proposes a novel flexible lander suitable for asteroids with microgravity and rugged surface. The gravity model with the artific...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kamesh Sankaran, Scott A. Griffith, Noah C. Thompson, Matthew D. Lochridge and Andrew S. O?Kins
A streamlined genetic algorithm was developed and implemented on a GPU to evaluate low-thrust trajectories of spacecraft propelled by an ion thruster. It was then applied to examine the utility of a specific thruster for an asteroid impact mission. This ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Stefano Casini, Iosto Fodde, Bert Monna, Angelo Cervone and Eberhard Gill
The purpose of this work is to present a novel CubeSat architecture, aimed to explore Near Earth Asteroids. The fast growth in small satellite commercial-off-the-shelf technologies, which characterized the last decade of space industry, is exploited to d...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jinlin Wang, Hai Li, Zhangjin Lin and Hong Huo
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 to several kilometers, in which relative measurements of much higher acc...
ver más
|
|
|
|
|
|
|
|
|
|
|
Weidong Yin, Leizheng Shu, Yang Yu and Yu Shi
In this article, we present a free-vertex tetrahedral finite-element representation of irregularly shaped small bodies, which provides an alternative solution for estimating asteroid density distribution. We derived the transformations between gravitatio...
ver más
|
|
|
|
|
|
|
|
|
|
|
Tatsuaki Okada
Activities in lunar, planetary, and asteroid science and exploration.
|
|
|
|
|
|
|
|
|
|
|
Feng Xiong, Qin Li, Bo Zhou, Jiongli Huang, Guiqiang Liang, Li?e Zhang, Shuyan Ma, Li Qing, Linhan Liang, Jing Su, Xiaowu Peng, Qin Li and Yunfeng Zou
Atmospheric benzene, toluene, ethylbenzene, and xylenes (BTEX) can lead to multiple health injuries. However, what remains uncertain is the effect of long-term exposure to low levels of BTEX. Thus, we determined the BTEX levels in the air from the refuel...
ver más
|
|
|
|
|
|
|
|
|
|
|
Madhur Tiwari, Eric Coyle and Richard J. Prazenica
In this work, we propose a novel controller based on a simple adaptive controller methodology and model predictive control (MPC) to generate and track trajectories of a spacecraft in the vicinity of asteroids. The control formulation is based on using ad...
ver más
|
|
|
|
|
|
|
|
|
|
|
Patrick Dills, Amy Stevermer, Tony Mancus, Bryan Guarente, Tim Alberta and Elizabeth Page
Since 1989, the COMET® Program?s staff of instructional designers, scientists, graphic artists, and web developers has been creating targeted, effective, and scientifically sound instructional materials for the geosciences in multiple languages and forma...
ver más
|
|
|
|
|
|