New Mission and Spacecraft Design Enabled Using MSAC
New Mission and Spacecraft Design Enabled Using MSAC
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DOI：
10.1109/aero55745.2023.10115834
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Vedant;Patrick Haddox;James T. Allison
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文献类型：
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作者：
Vedant;Patrick Haddox;James T. Allison
一种新的姿态控制系统被称为多功能姿态控制结构(MSAC)，它利用航天器上的结构来提供主动噪声消除和大角度回转能力。以前的研究已经详细说明了系统交易以及物理和控制设计，以最大限度地提高MSAC系统的指向性能。因此，MSAC系统可以提供亚毫弧秒/纳弧度级别的指向稳定性和精度。传统的航天器设计是基于传统的航天器总线系统，其中传统的ACSS是航天器质量和体积的重要驱动因素。MSAC放宽了这些要求，实现了一种新的航天器任务类别。本文详细介绍了可使用MSAC系统实现的具有大面积质量比的新的航天器体系结构，如太阳帆、圆盘、芯片卫星等。除了独立的航天器外，MSAC还可用于为航天器上的不同子系统提供独立的驱动能力，如自导向天线、太阳能电池板和热辐射器。这些新的航天器母线和子系统是使用MSAC实现的，这将对星座任务的开发和部署产生深远的影响。目前，MSAC作为三个主要变种存在，用于不同的任务类型和不同的设计复杂程度。本文比较了不同的变种，以及使用不同实现获得的控制权限。除了旋转控制，MSAC还提供平移位置控制。这些平移定位能力在小尺度(微米级定位)时效果最好。位置控制可用于对航天器位置敏感的内部平移有源噪声消除和编队飞行任务。利用MSAC提供的精确指向和定位精度和稳定性，可以提高深空光通信的通信数据速率，并使分布式集群和LISA等任务成为可能。
A new attitude control system (ACS) called Multifunctional Structures for Attitude Control (MSAC) utilizes structures onboard a spacecraft to provide active noise cancellation and large-angle slewing capabilities. Previous studies have detailed the system trades and physical and control designs that maximize the pointing performance of an MSAC system. As a result, the MSAC system can provide sub-milli-arc-second(mas)/nano-radian level pointing stability and accuracy. Traditional spacecraft design is formulated based on conventional spacecraft bus systems, of which conventional ACSs are a significant driver for the mass and volume of the spacecraft. MSAC relaxes these requirements and enables a new class of spacecraft missions. This paper details the new spacecraft architectures with large area-to-mass ratios that can be enabled using the MSAC system, such as solar sails, Disksats, ChipSats, etc. In addition to standalone spacecraft, MSAC can also be used to provide independent actuation capabilities to different subsystems onboard a spacecraft, such as self-steering antennas, solar panels, and thermal radiators. These new spacecraft busses and subsystems are made possible using MSAC, which can profoundly impact constellation mission development and deployment. Currently, MSAC exists as three main variants for use with different mission types and varying design complexity levels. This paper compares the different variants, and the control authority obtained using the different implementations. In addition to rotational control, MSAC also offers translational position control. These translational positioning capabilities are best at small scales (micrometer-level positioning). The position control can be utilized for internal translational active noise cancellation and formation flying missions that are sensitive to a spacecraft's position. Using the fine pointing and positioning accuracy and stability offered by MSAC can increase communication data rates for deep space optical communication, as well as enable missions such as distributed swarms and LISA.