National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Mars Exploration Program Analysis Group(MEPAG)

Dr. Fuk Li

March 3-4, 2009

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Integrated Spacecraft

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Cruise Stage

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Descent Stage

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Backshell

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

PICA Heatshield

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Rover Chassis

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Payload

ChemCam

MARDI

RAD

CheMin APXS

MAHLI

SAM

Mastcam

REMS

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Top-Level Schedule Strategy

• F09 - Risk Reduction/Design Completion– Retire high risk development issues– Finish hardware builds where feasible

• FY10 - Delivery & Test– Complete remaining hardware builds– Conduct Rover System Environmental Test Program

• FY11 - Test & Margin– Launch/Cruise ETP & KSC Operations– Complete ATLO ~ 4 months prior to earliest launch date

FY11FY10FY09

Design/Problem Closeout

Final Hardware

Fab

Launch

Rover Integ.Rover ETP

L/C Stack& ETP KSC Ops

Sys V&VActuators Avionics

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

10

ATLO Schedule Overview: FY’10

CruiseStage

DescentStage

Rover

Oct ’09 Dec ’09 Feb ’10 Apr ’10 Jun ’10 Aug ’10

DS AVS Rework

CS AVS & SA Rework

RVR AVS Rework & Assy

Mech Re-assemblyElect Re-integration

Oct ’10

FunctTesting

RCE, RPAMs

SurfaceSTT

Double Shift Activity

RCE, RPFA

RMCA, RPA, RPFA, UHF

DPAMs

HGA RA

TBD EarlyI&T Activities

CBE Delivery Plan

Mech I&T

Elect I&T

Mech I&T

Elect I&T

Using PARts RCE

System Test[RVR]

System Test[RVR-STT]

Mgn(0.5m)

Margin(1m)

System Test[destacked-EDL]

HWRemoval

HWRemoval

RSM

SA

BUD

Mobility LastInstrument

DrillChimera

RIPA

CIPA

FY’09

De-S

tacked Vehicle F

unctional Testing

Stack V

ehicle

Mgn(0.5m)

Mgn(0.5m)

Mgn(0.5m)

Mgn(0.5m)

DMCA, DPA, TDS

CPA

FY’09

FY’09

Stacked V

ehicle Functional T

esting

Margin (0.5m

)

L/C

TV

AC

CPAMs

RandomVibe

System Test[stacked]

Descent Stage Rework Mgn(0.5m)

HWRemoval

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

11

ATLO Schedule Overview: FY’11

Oct ’10 Dec ’10 Feb ’11 Apr ’11 Jun ’11 Aug ’11 Oct ’11

Double Shift Activity Using PARts RCE

KSCSystem Test[destacked]

System Test[stacked-STT]

Schedule Slack

CruiseStage

DescentStage

Rover

CBE Delivery Plan

Stack V

ehicleV

ehicle Fueling

Final M

P M

easurements

Margin (0.5m

)

De-S

tacked Vehicle F

unctional Testing

MM

RT

G E

lectrical Checkout

Pack, S

hip, Unpack

Vehicle C

loseout / Prep

Margin (0.5m

)

Destack

L/C

TV

AC

Rover M

ass Properties, EM

C, V

ibe

Margin (0.5m

)

De-S

tacked Vehicle F

unctional Testing

Margin (0.5m

)

Skeleton KSC Ops

Launch

LV

Encapsulation

National Aeronautics and Space Administration

Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California

Mission Overview• Obtain detailed measurements of the upper atmosphere,

ionosphere, planetary corona, solar wind, solar EUV and SEPs over a 1-Earth-year period, to define the interactions between the Sun and Mars

• Operate 8 instruments for previously unobtainable science results:

Particles and Fields Package (6 instruments):

SWEA - Solar Wind Electron AnalyzerSWIA - Solar Wind Ion AnalyzerSTATIC - Suprathermal and Thermal Ion CompositionSEP - Solar Energetic ParticleLPW - Langmuir Probe and Waves (with EUV

detectors)MAG - Magnetometer

IUVS - Imaging Ultraviolet Spectrometer

NGIMS - Neutral Gas and Ion Mass Spectrometer

• Fly 75°-inclination, 4.5-hour-period, 150-km-periapsis-altitude science orbit

• Perform five 5-day “deep dip” campaigns to altitudes near 125 km during the 1-year mission

MAVEN Status and Plans

Mission Objectives• Determine the role that loss of volatiles from the Mars atmosphere to space has played

through time, allowing us to understand the histories of Mars’ atmosphere and climate, liquid water, and planetary habitability

• Determine the current state of the upper atmosphere, ionosphere, and interactions with the solar wind

• Determine the current rates of escape of neutrals and ions to space and the processes controlling them

• Determine the ratios of stable isotopes that will tell Mars’ history of loss through time

Status and Plans• Oct 2008 – Risk Reduction Phase start

• Implementing several risk-reduction activities, including:

• STATIC Engineering Test Unit

• Periapsis Timing Estimator using MRO test bed

• C&DH software &instrument hardware interface and function verification using MRO test env

• Preparing for System Requirements Review

• Conducting program-directed relay-comm studies

• Aug 2009 – System Requirements Review

• Oct 2009 – Phase B startLaunch• To be launched from KSC on an EELV between

November 18 and December 7, 2013

• Mars Orbit Insertion on September 16, 2014 (for 11/18 launch)

Website http://lasp.colorado.edu/MAVEN