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designdocument - EMFFORCE DESIGN DOCUMENT 5/16/2002 TABLE...

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Unformatted text preview: EMFFORCE DESIGN DOCUMENT 5/16/2002 TABLE OF CONTENTS 0 Program Overview 14 0.1 Introduction 15 0.1.1 Background & Motivation 15 0.2 Mission Statement 16 0.3 Requirements Summary 16 0.3.1 Customer Requirements 16 0.3.2 Functional Requirements 17 0.3.2 Operational Requirements 17 0.4 Purpose 18 1 System Overview 19 1.1 Visualization 20 1.1.1 Actuation 20 1.1.2 Formation Flight 20 1.1.3 Electronics 20 1.1.4 Structure/Power 21 1.2 Flowdown 21 1.2.1 Information Flowdown 21 2 Subsystems 22 2.1 EM 23 2.1.1 Subsystem Overview 23 2.1.2 Purpose Of Part 24 2.1.3 Interfacing 24 2.1.4 Trades Analysis 24 2.1.4.1 Core Material 24 2.1.4.2 Configuration 27 2.1.4.3 Core and system mass 30 2.1.5 External Interfacing Needs 32 2.1.6 Budgets 32 2.1.7 Conclusion 32 2.2 Reaction Wheel Assembly 33 1 EMFFORCE DESIGN DOCUMENT 5/16/2002 2.2.1 Subsystem Overview 34 2.2.2 Purpose of RWA 34 2.2.3 RWA Internal Interfacing 34 2.2.4 RWA Trade Analysis 35 2.2.4.1 Reaction Wheel Material Selection 35 2.2.4.2 Reaction Wheel Manufacturing 35 2.2.4.3 Reaction Wheel Mass and Size Estimates 35 2.2.4.4 RWA Power Estimate 38 2.2.5 Summary of Reaction Wheel Selections 39 2.2.6 External Interfacing Needs 39 2.2.7 Budgets 40 2.2.8 Conclusion 40 2.3 Control 41 2.3.1 Subsystem Overview 41 2.3.2 Steady State Mode 42 2.3.2.1 Definition of Steady State Mode 42 2.3.2.2 Discussion Trades Analysis 43 2.3.2.3 Summary of Options/Selection Criteria 49 2.3.3 Spin-up/Spin-down Mode 49 2.3.3.1 Definition of Spin-up/Spin-down 49 2.3.3.2 Discussion of Trades Analysis 52 2.3.3.3 Summary of Options/Selection Criteria 53 2.3.4 Control Architecture 53 2.3.4.1 Definition of Control Architecture 53 2.3.4.2 Discussion of Trades Analysis 54 2.3.4.3 Summary of Options/Selection Criteria 54 2.3.5 External Interfacing Needs 54 2.3.6 Budgets 55 2.3.7 Conclusions 55 2.4 Metrology 56 2.4.1 Subsystem Overview 56 2 EMFFORCE DESIGN DOCUMENT 5/16/2002 2.4.2 System Trade Analysis 56 2.4.3 Design Overview 57 2.4.3.1 Algorithm 58 2.4.4 Ultrasonic Transmitter 58 2.4.4.1 Purpose of Part 58 2.4.4.2 Discussion of Trade Analysis 59 2.4.5 Ultrasonic Receiver 59 2.4.5.1 Purpose of Part 59 2.4.5.2 Discussion of Trade Analysis 60 2.4.6 Infrared Transmitter 60 2.4.6.1 Purpose of Part 60 2.4.6.2 Discussion of Trade Analysis 60 2.4.7 Infrared Receiver 60 2.4.7.1 Purpose of Part 60 2.4.7.2 Discussion of Trade Analysis 60 2.4.8 Rate Gyro 61 2.4.8.1 Purpose of Part 61 2.4.8.2 Discussion of Trade Analysis 61 2.4.9 Accelerometer 61 2.4.9.1 Purpose of Part 61 2.4.9.2 Discussion of Trade Analysis 61 2.4.10 Metrology Design Issues 61 2.4.11 External Interfacing Needs 62 2.4.11.1 Avionics Interfaces 62 2.4.11.2 Communications Interface 62 2.4.11.3 Control Interface 63 2.4.11.4 Power Interface 63 2.4.11.5 Structural Interface 64 2.4.12 Estimated Budgets 2....
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This note was uploaded on 11/08/2011 for the course AERO 16.810 taught by Professor Olivierdeweck during the Winter '07 term at MIT.

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designdocument - EMFFORCE DESIGN DOCUMENT 5/16/2002 TABLE...

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