of 29
7/23/2019 NASA PM&SE Presentation
1/29
LaRC Systems EngineeringDevelopment Program
Overview of
Project Management and Systems Engineering
P la n n i n g a n d t h e W o r k B r e ak d o w n S tr u c t u r e
7/23/2019 NASA PM&SE Presentation
2/29
Course Objectives
Upon completion of this module the participants will:
Be familiar with the various elements of the planningprocess
Be familiar with the concept of planning and how it isaccomplished
Understand the importance of a WBS
Be able to identify the uses of a WBS
Develop a WBS
Understand the need for and contents of a WBSDictionary
2
7/23/2019 NASA PM&SE Presentation
3/29
Need for Planning
Planning
3
7/23/2019 NASA PM&SE Presentation
4/29
Need for Planning
is something
4
7/23/2019 NASA PM&SE Presentation
5/29
Need for Planning
You really should do.
you really should do.
5
7/23/2019 NASA PM&SE Presentation
6/29
Project Planning
WBS
Organization RESPONSIBILITY
MATRIX
REQUIREMENTS
"WHO DOES
WHAT"
DEVELOP SOLUTION
WORK PLAN ANDRESOURCE PLAN
"WHEN"
$$ BUDGET
"HOW
MUCH"
"HOW"
EVMS
"HOW
WELL"
6
7/23/2019 NASA PM&SE Presentation
7/29
Planning Elements
Work Breakdown Structure
Identification of tasks
Determination of implementation methods
Assignment of responsibility
Development of schedule
Development of resources required
Baseline Project Plan
7
7/23/2019 NASA PM&SE Presentation
8/29
Work Breakdown Structure
8
7/23/2019 NASA PM&SE Presentation
9/29
Uses of WBS
The WBS is an essential tool used for:
Defining the total work content
Assigning responsibilities
oca ng resources
Determining schedules
Estimating, allocating, controlling and reporting costs (budgeting)
Identifying, analyzing and managing risk
Allocating and verifying requirements
9
7/23/2019 NASA PM&SE Presentation
10/29
NASA WBS Guidelines
Preliminary WBS - developed during the formulation phase
Final WBS - generated following approval / contractorselection
7120.5D prescribes WBS to be used to level 2
Level of visibility consistent with cost/schedule/riskconsiderations
Program/project shall develop a companion WBS dictionarythat narratively describes the overall structure and content
of each individual element of the WBS
10
7/23/2019 NASA PM&SE Presentation
11/29
Product-OrientedWork Breakdown Structure
p r o d u c t s from top level to the lowest levelcomponent
11
7/23/2019 NASA PM&SE Presentation
12/29
Product-OrientedWork Breakdown Structure
The WholeThe Whole Its PiecesIts Pieces
A Method to Achieve Logical Decomposition of a
Large/Complex Thing
Pieces are successively decomposed into smaller and smallerpieces until each piece is a manageable size
12
7/23/2019 NASA PM&SE Presentation
13/29
Example of Product-Oriented WBS
Propulsion System1.1
Car1.0
Steering System1.2
Body1.3
Options1.4
Differential1.1.1
Camshaft& Pistons
1.1.3.2
Transmission1.1.2
Engine1.1.3
IntakeManifold
1.1.3.3
CoolingSystem
1.1.3.4
EngineBlock
1.1.3.5
EngineController
1.1.3.7
Crankshaft
1.1.3.6 1.1.3.8
Exhaust
13
7/23/2019 NASA PM&SE Presentation
14/29
Definitions with Regard toWork Breakdown Structure
Product-Oriented Work Breakdown Structure
A hierarchical structure that maps the projectsp r o d u c t s from top level to the lowest level
com onent
Work-Oriented Work Breakdown Structure
A hierarchical structure that maps the projectsw o r k f u n c t io n s from top level to the lowestlevel activity
14
7/23/2019 NASA PM&SE Presentation
15/29
Work-OrientedWork Breakdown Structure
MissionManagement
1.0
Project
Management
Systems
EngineeringScience
Definition
Test &
Integr ation Oper ations
Design
1.2.2Analysis
1.2.3
Software
Development
1.2.4
Preliminary
Design
1.2.2.1
Detail
Design
1.2.2.2
GenerateDrawings
1.2.2.3
Prepare
Specs
1.2.2.4
Concept
Development
1.2.1
Material
Identification
1.2.2.5
Stress
Analysis
1.2.2.6
. . 1.3 1.4 1.5
15
7/23/2019 NASA PM&SE Presentation
16/29
Product-OrientedWork Breakdown Structure
Mission1.0
LaunchVehicle
Observatory
1.2
Ground
Station
Bus
1.2.2
InstrumentB
1.2.3
InstrumentC
1.2.4
Software
1.2.2.1
Thermal
System
1.2.2.2
Ext. PowerSystem
1.2.2.3
GN&C
System
1.2.2.4
InstrumentA
1.2.1
Maneuvering
System
1.2.2.5
Structural
Systems
1.2.2.6
. .
16
7/23/2019 NASA PM&SE Presentation
17/29
Construction of WBS
Use Product-Oriented
WBSSub-
System
A
Sub-
System
B
Sub-
System
C
Sub-
System
D
SYSTEM
Add functions
Project
Mngmt
Systems
Eng.TestingTraining
Sub-
System
A
Sub-
System
B
Sub-
System
C
Sub-
System
D
SYSTEM
Etc.
required to make
project work
Notes: NASA uses Product-Oriented WBS as above.
17
7/23/2019 NASA PM&SE Presentation
18/29
Product-OrientedWork Breakdown Structure
Mission 1.0
MissionAssurance
1.1
Science
1.5Operations
1.6
SystemEngineering
1.2
Observatory1.3
Launchvehicle
1.4
ProjectManagement
1.7
Instrument
1.3.4
Bus
1.3.5
Observatory
Integration1.3.1
MissionAssurance
1.3.2
SystemEngineering
1.3.3
ObservatoryManagement
1.3.6
InstrumentIntegration
1.3.4.7
SS-A
1.3.4.3
SS-B
1.3.4.2
MissionAssurance
1.3.4.6
SystemEngineering
1.3.4.5
InstrumentManagement
1.3.4.4
SS-C
1.3.4.1
SubsystemIntegration
1.3.5.1
Software
1.3.5.5
EPS
1.3.5.6
MissionAssurance
1.3.5.2
SystemEngineering
1.3.5.3
SubsystemMgmt1.3.5.4
Thermal
1.3.5.7GN&C
1.3.5.8ECT.
1.3.5..ect..
ComponentIntegration
13.5.6.7
Solar Array1.3.5.6.3
Battery1.3.5.6.2
MissionAssurance1.3.5.6.6
SystemEngineering
1.3.5.6.5
ComponentMgmt
1.3.5.6.4
PMAD1.3.5.6.1
D esign 1.3.5.6.3.1
Drawings & Specs. 1.3.5.6.3.2Stress Analysis 1.3.5.6.3.3
Manufacturing 1.3.5.6.3.4 Final Assembly 1.3. 5.6.3.5
18
7/23/2019 NASA PM&SE Presentation
19/29
WBS Attributes
Top down Hierarchical
Requirements driven
Allows identification of resources to perform the work
Schedule
Personnel
Materials and processes
Facilities
Describes the total effort (Sum of all WBS Elements)
Promotes clear lines of accountability System interactions can be established
Continues to level at which work is being done
19
7/23/2019 NASA PM&SE Presentation
20/29
Space Flight Project WBS (7120.5D)
Project ystems afety & Mission Science / Payload(s) Mission
Space Flight Project
Project ystems afety & Mission Science / Payload(s) Spacecraft MissionManagement
01Engineering
02Assurance
03echnology
04 05Operations
07
Launch Vehicle /Services
08
GroundSystem(s)
09
Systems Integration& Testing
10
Education andPublic Outreach
11
Management01
Engineering02
Assurance03
echnology04 05 06
Operations07
Launch Vehicle /Services
08
GroundSystem(s)
09
Systems Integration& Testing
10
Education andPublic Outreach
11
Figure G.4-1 NPR 7102.5D
20
7/23/2019 NASA PM&SE Presentation
21/29
LIFESAT2
Level 2 WBS Exercise
Project Level WBS Use the case study
Define how the LIFESAT 2Protoflight Development and Flight
O erations will fit into the Fli htSupport and Ground Systems WBS
Discuss results with the class
21
7/23/2019 NASA PM&SE Presentation
22/29
Program/Project/Contractor WBS
Space StationDevelopment
Program
SPACE STATION PROGRAM
Program WBS Contract WBS
1
2
Level
WPO4WPO3WPO2
PrimeContractor
ReservedSupportingDevelopment
WPO1
UnpressurizedLog Carrier
Log Module(Pressurized)
LogisticsElement
HabitationElement
US LabElement
Prime Contractor
3
4
5
6
22
7/23/2019 NASA PM&SE Presentation
23/29
LIFESAT2 Exercise III-2-B
Contractor Level WBS
Use the case study
Develop the RRS Spacecraft WBSElement down to the subsystem
eve Develop the Structure Subsystem
WBS Element down to Contractorlevel 3
Discuss results with the class
23
7/23/2019 NASA PM&SE Presentation
24/29
WBS Dictionary
A complete narrative description of the specificwork content of each WBS element, defined at
,additional data useful to project management
24
7/23/2019 NASA PM&SE Presentation
25/29
WBS Dictionary Elements
Statement of work to be performed
Associated resources
Dependencies (to/from)
Deliverable(s)
Risk considerations
25
7/23/2019 NASA PM&SE Presentation
26/29
WBS Dictionary Example
1.1.3 Deorbit Propulsion Subsystem
STATEMENT OF WORK This WBS element includes the design development, assembly &
functional testing of the Deorbit Propulsion Subsystem
ASSOCIATED RESOURCES Cost not to exceed $9.8 m The propulsion system team will consist of system engineering,
design engineering, manufacturing, fueling personnel, propulsiontest personnel, computer systems engineers, test conductors, and
quality assurance personnel The propulsion system test stand will be used for functional testing
26
7/23/2019 NASA PM&SE Presentation
27/29
WBS Dictionary Example (contd.)
Schedule Information The propulsion subsystem must be delivered within 17 months
Dependencies Spacecraft systems design Interface specifications
Deliverables Deorbit Propulsion System Design Documents
Subsystem specifications Deorbit propulsion subsystem including tankage, nozzles,
propellant lines, valves, etc System to be provided ready for integration into spacecraft
assembly prior to all up functional and qualification testing. Test plans
Risk Considerations Interface Specifications delayed Deorbit rockets fail to fire Insufficient fuel available to deorbit
27
7/23/2019 NASA PM&SE Presentation
28/29
Summary
Discussed the various elements of theplanning process
Discussed the concept of planning and howit is accomplished
Established the importance of a WBS
Identified the uses of a WBS
Developed a WBS
Discussed the need for and contents of aWBS Dictionary
28
7/23/2019 NASA PM&SE Presentation
29/29
Comments
Does anyone have anything theyDoes anyone have anything they
would like to share with the groupwould like to share with the group
about WBS?about WBS?
29