ASCEND 2020最新文献_第5页

Autonomous Optical-Only Navigation for Deep Space Missions 深空任务自主光导航

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4139

S. Bhaskaran

引用次数: 4

GrowMars Process for Expanding Oxygen, Food, Radiation, Manufacturing Material Production Rates GrowMars过程扩大氧气，食品，辐射，制造材料的生产速度

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4153

Daniel V. Tompkins, A. Muscatello

引用次数: 1

Autonomous Upper Stage Guidance Using Convex Optimization and Model Predictive Control 基于凸优化和模型预测控制的自主上级制导

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4268

Boris Benedikter, Alessandro Zavoli, G. Colasurdo, S. Pizzurro, E. Cavallini

引用次数: 9

BMC2 Data Operations for Resilient Virtual Ground 弹性虚拟地面的BMC2数据操作

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4160

C. Badgett

引用次数: 0

IR based local tracking system Assessment for planetary exploration missions 行星探测任务红外局部跟踪系统评估

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4024

Minzhen Du, G. Gargioni, M. Peterson, Daniel D. Doyle, Jonathan T. Black

引用次数: 1

The Future of Space Rights - Fundamental Human Rights in Outer Space 空间权利的未来-外层空间的基本人权

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4265

AJ Link, Jonathan Lim

引用次数: 0

Mars Science Helicopter Conceptual Design 火星科学直升机概念设计

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4029

Shannah Withrow, W. Johnson, L. Young, Witold J. F. Koning, Winnie Kuang, Carlos A. Malpica, J. Balaram, T. Tzanetos

引用次数: 30

Lagrange-Based Options for Relay Satellites to Eliminate Earth-Mars Communications Outages During... 基于拉格朗日的中继卫星解决地球-火星通信中断问题

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4005

R. Howard

{"title":"Lagrange-Based Options for Relay Satellites to Eliminate Earth-Mars Communications Outages During...","authors":"R. Howard","doi":"10.2514/6.2020-4005","DOIUrl":"https://doi.org/10.2514/6.2020-4005","url":null,"abstract":"—Recent conjunction class Mars human mission plans have generally assumed that there will inevitably be periods of communications outages between Earth and Mars. This has significant cost and risk implications for not only Mars missions, but also precursor missions in the lunar environment. But are there ways to avoid these outages? The potential exists for communications to be interrupted by Solar Superior Conjunctions (SSCs). Depending on the communications system, used, there can be communications outages up to as many as 78 days. The higher bandwidth systems experience the greatest outage. If these communications channels are interrupted due to an SSC, there are of course resulting challenges to mission operations. An outage of a few days to a few weeks could allow minor disturbances to become major concerns or even trigger subsystems failures. An inability to consult with the ground at the wrong time could result in loss of mission, loss of an element, or loss of life. Each planet in the solar system has a set of five Lagrange points associated with it and the Sun. At any given point in time, a planet or either its L4 or L5 point is visible to any other planet in the solar system, regardless of the position of the sun relative to the two. Thus, L4 and L5 have high value as relay systems to prevent communications outages. There are four sets of solar Lagrange points that may be of potential use in this study: Mars-Sun L4 and L5 points, Earth-Sun L4 and L5, Venus-Sun L4 and L5, and Mercury-Sun L4 and L5. A candidate relay satellite system will be identified, with consideration of both new technology developments and existing telecommunications satellites. This system may have implications for not only the Mars human mission architectures, but also Gateway and human lunar surface architectures as these other studies are tasked with paving the way to human Mars missions. If Mars communications outages can be eliminated, then the degree of autonomy necessary in Mars and precursor systems may be reduced.","PeriodicalId":153489,"journal":{"name":"ASCEND 2020","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130976116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Doing Much with Little: HIVE A New Space Architecture 用少做多:HIVE一个新的空间架构

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4172

H. Helvajian

引用次数: 1

SLS Evolution: Comparing Configurations Using System Exergy SLS进化:使用系统能量比较配置

ASCEND 2020 Pub Date : 2020-11-02 DOI: 10.2514/6.2020-4072

Terry D. Haws, Michael E. Fuller, M. Watson, Joshua S. Zimmerman

引用次数: 0