MIT 16 83X - Trade Analysis and Requirements Review

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MIT Aero/Astro EMFEMFEMF222ORCEORCEORCETrade Analysis and Requirements Review <BAB>Welcome to the Trade Analysis and Requirements Review for Project EMFFORCE (ElectroMagnetic FormationFlight Of Rotating Clustered Entities). 1ElectroMagnetic Formation Flight Of Rotating Clustered Entities 2MIT Aero/Astro EMFEMFEMF222ORCEORCEORCECDIO Space Systems Product DevelopmentREQUIREMENTS PROCESSES Oscar Murillo Andre Bosch Leah Soffer William Fournier Maggie Sullivan Erik Stockham Jennifer Underwood ARCHITECTURE Jesus Bolivar DATABASESDarien Crane Amilio Aviles Geeta Gupta Amy Schonsheck Timothy Sutherland Stephanie Slowik Lindsey Wolf Melanie Woo Introduction Requirements System Trades Subsystems Processes Conclusion<BAB>The CDIO Space Systems Product Development Class met as a team for the first time five weeks ago. At this meeting we were presented with the challenge of demonstrating the feasibility of using electromagnetic control for formation flight of satellites. Since then the team has been working diligently to understand the problem and quantify any relevant requirements and trades. To this end, the class organized it self into the following groups: Requirements, Processes, Architecture, and Databases. The Requirements team was formed to identify all customer requirements and constraints and to levy other pertinent requirements as dictated by the nature of the project. The Processes team was formed to act as a systems engineering team so as to coordinate the other teams. In addition, the processes team set up the processes by which the class would conduct the remainder of the project. The Architecture team was formed to quantify the design trades in order to identify important metrics. In the process of doing so, the Architecture team also drafted design possibilities and investigated these possibilities. The Databases team was formed to construct a database of possible parts and manufacturers. This database will become invaluable in determining whether to make or buy a particular part. This database will also enable the project team to select parts that meet requirements. Once the TARR has passed, the class will be divided into subsystem groups with a systems group coordinating the project. 2MIT Aero/Astro EMFEMFEMF222ORCEORCEORCEErik Stockham Introduction •Purpose•Background•Motivation •Mission •Approach•OverviewRequirements System Trades Subsystems Processes ConclusionIntroduction<JEU> Welcome to the Introduction portion of the Trade Analysis and Requirements Review for Project EMFFORCE (ElectroMagnetic Formation Flight Of Rotating Clustered Entities). 3ElectroMagnetic Formation Flight Of Rotating Clustered Entities 4MIT Aero/Astro EMFEMFEMF222ORCEORCEORCETARR Purpose • Formally accept Requirements Document• Present system and subsystem trade analyses• Outside expert review of current progress– Provide impetus for generation of new action items Introduction •Purpose•Background•Motivation •Mission •Approach•OverviewRequirements System Trades Subsystems Processes Conclusion<BAB>The purpose of the TARR is explicit in its name, Trade Analysis and Requirements Review. Specifically, the class hopes to review the requirements that have been levied and the trade analyses that have been conducted. The purpose of presenting this to an audience is twofold: 1. To require the class to polish their work by having to make it presentable to an outside audience.2. To seek outside view of our work as it stands. The class realizes that we do not have all the answers and hopes that through this exercise we will gain further understanding and new insight into the project. 4ElectroMagnetic Formation Flight Of Rotating Clustered Entities 5MIT Aero/Astro EMFEMFEMF222ORCEORCEORCEFormation Flying Satellites Introduction •Purpose•Background •Motivation •Mission •Approach•OverviewRequirements System Trades Subsystems Processes Conclusion• Use of a cluster of satellites flying in formation• New mission capabilities • SPHERES demonstrated feasibility <BAB & ESS & WDF> Formation flight of satellites is defined as the use of a cluster of satellites maintaining a designated formation in Space Flight. Although formation flight of satellites has yet to be used in practice it is being discussed in the aerospace industry as a way to provide new mission capabilities for satellites. SPHERES demonstrated the initial feasibility of the use of a group of satellites in formation flight and we hope to expand on this research with our project.5ElectroMagnetic Formation Flight Of Rotating Clustered Entities 6MIT Aero/Astro EMFEMFEMF222ORCEORCEORCEElectromagnetic Control Introduction •Purpose•Background •Motivation •Mission •Approach•OverviewRequirements System Trades Subsystems Processes Conclusion• The use of electromagnets as the force generator that will control the vehicles • Control achieved by varying the current in the coil of the magnet BABElectromagnetic control of satellites essentially means that we will be using electromagnets as the force generators to control the relative position, attitude, and angular rate of a cluster of satellites. This control can be achieved by varying the current in the coil of an electromagnet to vary the B field the electromagnets provide. 6ElectroMagnetic Formation Flight Of Rotating Clustered Entities 7MIT Aero/Astro EMFEMFEMF222ORCEORCEORCEAdvantages of Formation Flying Satellites • Smaller vehicles – Cheaper to launch • Redundancy – Mission doesn’t fail if one fails • Reconfigurable – Can tailor for mission specs Introduction •Purpose•Background •Motivation •Mission •Approach•OverviewRequirements System Trades Subsystems Processes ConclusionBABA number of current satellite missions are considering multiple spacecraft architectures for a variety of reasons. First, multiple spacecraft can be separated to large baselines thereby improving angular resolution for imaging, astrometry, and planet detection. Second, each spacecraft in the formation can be smaller than a single spacecraft designed to perform the same mission and thereby provide easier packaging, launch, and deployment. Third, since inter-spacecraft interfaces are soft (e.g., communications, optics, control, metrology), if a spacecraft fails, it can easily be removed from the formation and replaced with a functioning spacecraft. Fourth, as technology improves, replacement spacecraft can be


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MIT 16 83X - Trade Analysis and Requirements Review

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