Mission Analysis March 2004

Information about Mission Analysis March 2004

Published on January 22, 2008

Author: Dario

Source: authorstream.com

Content

Frontpage:  Frontpage Mission Analysis & System Engineering Per Lundahl Thomsen, Programme Manager, E-mail: [email protected] Introduktion Mission Analysis in General Terms System Enginering Tools Example 2 - Rømer Introduction – What is Mission Analysis ?:  Introduction – What is Mission Analysis ? ”Mission analysis is a structured method of ensuring that the mission success criteria's are clear and well understood.” & ”Mission analysis ensures, that the mission fulfils the overall success criteria's and at the same time stays within the project boundary conditions technical, political and financial.” & ”Mission analysis define the on-board subsystems configuration and basic subsystem requirements.” Introduction – where would we be without Mission Analysis:  Introduction – where would we be without Mission Analysis From ”Understanding Space” by Jerry Jon Sellers Example 1 - Building a Backyard Deck:  Example 1 - Building a Backyard Deck I need a nice deck or patio to put the BBQ and a place to relax in the sun I really have to resist the urge to drive to the hardware store to buy a load of lumber and start filling the garden with sawdust. I say to myself........ Think first then act. I carefully define what I really need before I drive down to the hardware store. - How much money do I have - How big do I want it to be. How big does my wife want it to be - What colour should it be What kind of materials and tools to I need How long time do I have to built it. Can I buy it off-the-shelf What is the cost If the cost is too high ???? Can I do it in time for the garden party next week ??? My wife comes a couple of days later and says I also want a nice hot tub – right there.......Hmm.. Again I have to go back and see if I can accommodate a tub within the constraints...........if you respect your wife's wish that is ! When I am reasonably certain I buy what I need and start building the Deck Initial Considerations – Mission Requirements and Constraints:  Initial Considerations – Mission Requirements and Constraints During the FIRST steps of the Space systems engineering process we define mission requirements and constraints. This involves Define Mission Statement Incl. State the mission objective – why we do the mission Identify mission users – who will benefit from or use the information produced by the mission Create the operations concept – how will all the mission elements fit together Identify mission constraints (Cost, schedule and performance) DOCUMENT THIS IN A MDD (Mision Definition Document) Initial Considerations – System Requirements:  Initial Considerations – System Requirements During the SECOND step of the space systems engineering process we derive the system requirements Review the constraints on mission architecture (Launch vehicle, orbit, operations, lifetime etc.) Identify and characterize the mission subject – (eg. ”what” will the spacecraft instrument complex (payload) do ?) Derive payload requirements Derive orbital requirements Determine basic spacecraft size and mass (envelope) Identify potential launch vehicles Derive operations network requirements (Groundstations). DOCUMENT THIS IN THE SRD (SYSTEM REQUIREMENTS DOCUMENT) Initial Considerations - Subsystem definition:  During the THIRD step of the space systems engineering process we start defining the subsystems, and after a few iterations of the requirements etc, the design can begin. Define ACS concepts (based on pointing, positioning and stability requirements) Define reduncdancy concepts. Define onboard subsystems (EPS, COM, CDH, Payload computer, On board SW, ACS etc. Perform data flow analysis Determine ground coverage and communications concept link budget Determine needed power and power output analysis Define thermal requirements and perform initial analysis Determine structural requirements and perform initial analysis Analyse radiation environment DOCUMENT THIS IN THE SRD or define Subsystem Requirements Documents RE-ITERATE ALL Initial Considerations - Subsystem definition Mission Analysis – Flow:  Mission Analysis – Flow From ”Understanding Space” by Jerry Jon Sellers Mission Analysis - Iterations:  Mission Analysis - Iterations From ”Understanding Space” by Jerry Jon Sellers Slide10:  System Engineering Tasks on Small Satelites Monitor The Design Process with the requirements in hand Ensure Project Communication incl. - External technical communication - Internal technical communication Slide11:  Satellite on-board systems Functions indicated How shall these functions be implemented? How shall they be linked together? (Interfaces) What kind of tasks are assigned to each function? System Engineering Tasks on Small Satelites Slide12:  Reduncdancy concepts. (Cubesats should be a single string satellite) Define and Maintain Data flow analysis Incl.: Definition of Data bus, Calc. of mass memory, Calc. of proccessing power and Def. of Protocols. Agree on Timing Concept Definition of Power bus (Power distribution concepts, grounding concepts) BUDGETS: - Define and Maintain Power Budget Incl. power output analysis - Define and Maintain Mass Budget - Define and Maintain Link Budget Define and Maintain Subsystem and System Interfaces: Electrical, SW, Mechanical and Thermal. System Engineering Tasks on Small Satelites – Page 1 of 2 - Use ICD’s Slide13:  System Engineering Tasks on Small Satelites – Page 2 of 2 Define and Maintain Satellite Interface design eg. test equipment & Launch vehicle Get system permissions (Frequencies, Spacecraft ID’s, export licenses etc.) Define baseline for satelite operations Define baseline for system test procedures and ensure coherence with operations and control systems. Participate in Satellite integration and Test Test Test Test Test ENSURE A CONTINOUS SYSTEM ENGINEERING CORE TEAM Design and Analysis Tools:  Design and Analysis Tools Design and analysis tools include computerbased and other techniques to calculate subsystem specifications and simulate trade-offs. Examples include: Spreadsheet (eg mass calculations, power output, link budget) Mathcad, Matlab, IDL for simulation of eg. ACS algorithms, power output and link budgets CAD Designtools etc for mechanical design. Eg Autocad, Mechanical desktop etc. Structural & Thermal design tools (Ansys, Ideas, NASTRAN, ESA-RAD/ESA- TAN) STK ”Satellite Tool Kit” for orbit analysis, ground tracks, pointing, visualisation, power output, link budgets operation implications Orbit analysis Nova for windows (WWW.NLSA.COM), realtrack Radiation environment analysis (www.spenvis.oma.be/spenvis.) Just remember .........”garbage in ...means garbage out” ....always have a sound understanding of the input and of the results. Basic Rule 1 - Keep It Simple......Stupid (KISS):  Basic Rule 1 - Keep It Simple......Stupid (KISS) KISS Basic Rule 2 – Keep track of interfaces:  Basic Rule 2 – Keep track of interfaces Keep track of interfaces USE ICD’S Slide17:  Basic Rule 3 – Make a plan Make a plan with appropriate milestones Basic Rule 4 – Have fun:  Basic Rule 4 – Have fun HAVE FUN &

Related presentations


Other presentations created by Dario

American Culture and Holidays
14. 02. 2008
0 views

American Culture and Holidays

tradereform
08. 05. 2008
0 views

tradereform

E100 Bio Sheren
07. 05. 2008
0 views

E100 Bio Sheren

200541391251190
02. 05. 2008
0 views

200541391251190

2006112916724474
02. 05. 2008
0 views

2006112916724474

Show me the money
30. 04. 2008
0 views

Show me the money

JisongWu
24. 04. 2008
0 views

JisongWu

Labor and Trade
22. 04. 2008
0 views

Labor and Trade

popular culture workshop
21. 04. 2008
0 views

popular culture workshop

simplenuclear
18. 04. 2008
0 views

simplenuclear

CW 20050713 095602 875
17. 04. 2008
0 views

CW 20050713 095602 875

4 Buddhism
15. 02. 2008
0 views

4 Buddhism

space kids moon
09. 01. 2008
0 views

space kids moon

Edward Clement Mametz Wood
10. 01. 2008
0 views

Edward Clement Mametz Wood

marble
10. 01. 2008
0 views

marble

83 KiloLambda
11. 01. 2008
0 views

83 KiloLambda

SpatialDisorientation
14. 01. 2008
0 views

SpatialDisorientation

Buche
13. 01. 2008
0 views

Buche

Estate Planning Council Dinner2
15. 01. 2008
0 views

Estate Planning Council Dinner2

Mozart and Musical Change
16. 01. 2008
0 views

Mozart and Musical Change

ParkinsonSAT serb1
17. 01. 2008
0 views

ParkinsonSAT serb1

Presentation on Communities
17. 01. 2008
0 views

Presentation on Communities

tennis
20. 01. 2008
0 views

tennis

Romania 2006 Space Settlement
21. 01. 2008
0 views

Romania 2006 Space Settlement

15 10probability
14. 01. 2008
0 views

15 10probability

Brown v Board of Education
24. 01. 2008
0 views

Brown v Board of Education

intro overheads f06
24. 01. 2008
0 views

intro overheads f06

2007 09 09r for web site
04. 02. 2008
0 views

2007 09 09r for web site

ANZ ROADSHOW
11. 02. 2008
0 views

ANZ ROADSHOW

Information on China
11. 02. 2008
0 views

Information on China

Dr John Mabry
07. 02. 2008
0 views

Dr John Mabry

products Produkte
13. 02. 2008
0 views

products Produkte

Science Nonbelief
18. 02. 2008
0 views

Science Nonbelief

Ch 16b Arthritis
25. 02. 2008
0 views

Ch 16b Arthritis

9 27 99
23. 01. 2008
0 views

9 27 99

Kirby
09. 01. 2008
0 views

Kirby

PA History Perla04 03 07 FINAL
10. 03. 2008
0 views

PA History Perla04 03 07 FINAL

mpotter hardiepresentation
14. 03. 2008
0 views

mpotter hardiepresentation

SecondGSentU3W3
10. 01. 2008
0 views

SecondGSentU3W3

Mosquito borne Diseases
15. 03. 2008
0 views

Mosquito borne Diseases

Crime Prevention Slides
19. 03. 2008
0 views

Crime Prevention Slides

hw1soln
21. 03. 2008
0 views

hw1soln

BolognaInfo
05. 02. 2008
0 views

BolognaInfo

RouteLogiXAdvancedSv1
07. 02. 2008
0 views

RouteLogiXAdvancedSv1

VAD
22. 02. 2008
0 views

VAD

SLIDES ADVCOUNCIL033 ppt
25. 03. 2008
0 views

SLIDES ADVCOUNCIL033 ppt

Unit 2 readingè
31. 03. 2008
0 views

Unit 2 readingè

Mbiti presentation
07. 04. 2008
0 views

Mbiti presentation

webdb xmlIntro
15. 01. 2008
0 views

webdb xmlIntro

Sports Ethics
14. 04. 2008
0 views

Sports Ethics

cellprocesses1 chapter6
15. 04. 2008
0 views

cellprocesses1 chapter6

Disabled in Barrier free city
16. 04. 2008
0 views

Disabled in Barrier free city

Adler Bradshaw
19. 01. 2008
0 views

Adler Bradshaw

Beard
21. 01. 2008
0 views

Beard

szigethy 2003
27. 02. 2008
0 views

szigethy 2003

MACotton
25. 01. 2008
0 views

MACotton

pos daad
10. 01. 2008
0 views

pos daad

fed1
27. 03. 2008
0 views

fed1

TS utv 1997 2007 071228
07. 02. 2008
0 views

TS utv 1997 2007 071228

FootbagGames Khorog
16. 04. 2008
0 views

FootbagGames Khorog

Lymphomas 2002 05 slides
06. 02. 2008
0 views

Lymphomas 2002 05 slides

303lec10
28. 01. 2008
0 views

303lec10

1c dominique jeremiasz
03. 03. 2008
0 views

1c dominique jeremiasz

Alans PresentationtoADF
14. 01. 2008
0 views

Alans PresentationtoADF

Sibille ceramics SRR6
20. 01. 2008
0 views

Sibille ceramics SRR6

Motilita GITus
04. 02. 2008
0 views

Motilita GITus

2006 09 23 EquitableED BatCreek
11. 01. 2008
0 views

2006 09 23 EquitableED BatCreek

PFF Fellows
14. 01. 2008
0 views

PFF Fellows

Keio 0 Lectures Introduction
16. 03. 2008
0 views

Keio 0 Lectures Introduction

740
08. 01. 2008
0 views

740

davies barker 2007
23. 01. 2008
0 views

davies barker 2007