NASA PM&SE Presentation

7/23/2019 NASA PM&SE Presentation

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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


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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

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Need for Planning

Planning

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Need for Planning

is something

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Need for Planning

You really should do.

you really should do.

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Project Planning

WBS

Organization RESPONSIBILITY

MATRIX

REQUIREMENTS

"WHO DOES

WHAT"

DEVELOP SOLUTION

WORK PLAN ANDRESOURCE PLAN

"WHEN"

$$ BUDGET

"HOW

MUCH"

"HOW"

EVMS

"HOW

WELL"

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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

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Work Breakdown Structure

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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

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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

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Product-OrientedWork Breakdown Structure

p r o d u c t s from top level to the lowest levelcomponent

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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

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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

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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

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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

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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

. .

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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.

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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

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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

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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

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Education andPublic Outreach

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Management01

Engineering02

Assurance03

echnology04 05 06

Operations07

Launch Vehicle /Services

08

GroundSystem(s)

09

Systems Integration& Testing

10

Education andPublic Outreach

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Figure G.4-1 NPR 7102.5D

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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

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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

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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

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WBS Dictionary

A complete narrative description of the specificwork content of each WBS element, defined at

,additional data useful to project management

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WBS Dictionary Elements

Statement of work to be performed

Associated resources

Dependencies (to/from)

Deliverable(s)

Risk considerations

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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

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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

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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

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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?

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NASA PM&SE Presentation

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