Chameleon suitjun02
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Chameleon Suit, Ed Hodgson 1
A Chameleon Suit to Liberate Human Exploration of Space
Environments
Ed HodgsonHSSSI
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Chameleon Suit, Ed Hodgson 2
Introduction• “To boldly go ……
– We’ve found that you need a spacesuit– Vacuum, radiation, extreme heat and
cold, micrometeoroids– This sure isn’t Kansas … So…
• “Working in their bulky spacesuits …– But does it have to be
this way forever?– We think not!
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Chameleon Suit, Ed Hodgson 3
Overview
• Study Foundations• The Phase I Chameleon Suit Study• The Phase II Study Concept• The Emergence of Enabling Technologies• The Study Plan• Where It All Leads
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Chameleon Suit, Ed Hodgson 4
Extravehicular Activity (EVA) Systems Development History
• The base paradigm –“Protecting the human from a hostile environment”
• Subsystem architecture– Protective pressure suit– Life support– Communication &
information
Life Support- Oxygen supply- CO2 removal- Humidity- Waste heat- Trace contaminants- Pressure control- Gas circulation
Information Systems
Pressure Suit (Isolation)- Insulation- Pressure barrier- MMOD- Radiation
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Chameleon Suit, Ed Hodgson 5
Human Systems In Every-Day Life• Environmentally adaptive & connected
– Multi-tiered control– Broad tolerance
• Functionally integrated– Multi-purpose systems– Distributed functions
1
2
3
4
Insulation Factor(CLO)
From: NASA STD 3000
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Chameleon Suit, Ed Hodgson 6
The Phase I Chameleon Suit StudySun Heated
Surfaces Insulated
Metabolic Heat Rejected ThroughTransmissive Surfaces With Low
Sink Temperature
• Testing a new space-suit paradigm:– Working with the environment– Integration of life support and pressure
garment
• Focus on thermal management• Applying emerging
technologies
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Chameleon Suit, Ed Hodgson 7
•According to environmental conditions
• Vary conduction - active polymers control layer spacing
• Vary layer emissivity
The Phase I Chameleon Suit Study
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Chameleon Suit, Ed Hodgson 8
The Phase II Study ConceptActive Heat Transport
Energy Harvesting CO2H2OO2
Selective MassTransport
Oxygen Recovery
Active Suit Fit
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Chameleon Suit, Ed Hodgson 9
Active Heat Transport Technology• Micro-machines• Thermoelectrics• Recent breakthroughs in
performance
• Flexible thermoelectric polymers
• Distributed thin-film modulesProgress of Thermoelectic Improvements
0
1
2
3
4
5
1930 1940 1950 1960 1970 1980 1990 2000 2010
Year
Figu
re o
f Mer
it, Z
TConventional material state of the art
Polymer state of the art
Commercially available material
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Chameleon Suit, Ed Hodgson 10
Active Suit Fit Technology• Personal & variable fitting• Mechanical Counter
Pressure (MCP) increases mobility & flexibility– SMA mesh– Smart gels
• Joints– Unidirectional Stretch Fabric
• Active mobility support
Active Fit Mat’ls
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Chameleon Suit, Ed Hodgson 11
Selective Mass Transport Technology• Separate CO2, H2O from
O2 with minimal O2 loss • Facilitated transport of
CO2 through chemical reaction
• Facilitators immobilized in membrane
CO2H2OO2
CO2H2OO2
0
1000
2000
3000
4000
5000
6000
7000
0.1 1 10 100 1000CO2 permeance x10-5 (scm3/cm2/sec/cmHg)
CO
2/N2 s
elec
tivity Performance
goalSodium glycinate
sodium carbonate
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Chameleon Suit, Ed Hodgson 12
Energy Harvesting
28 89 167 194222 117
234352
469
0
20
40
60
80
100
120
140
Power (watts)
Tsink (K)Met. Rate (Watts)
Ideal Power Recovery Potential From Metabolic Waste Heat With Radiation To Various Heat Sinks
120-140100-12080-10060-8040-6020-400-20
Power(Watts)
• Incident Sunlight– Increased solar cell
efficiency– Thin, flexible solar arrays
• Waste Metabolic Heat– Lower radiating
temperatures– Thermoelectric heat pumps
• Reduce battery size• Local storage eliminates
need for power distribution
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Chameleon Suit, Ed Hodgson 13
Oxygen Recovery – Artificial Photosynthesis
• Transform CO2, H2O back into O2 and fuel
• Thermo-chemical reactions, electrochemical reactions, catalysis
• Interest from environmen-tal, biochemistry, medical fields
Water O2+H+ H+
PS IPS II
NADPNADPH
Carbon fixation
ADPATP
thylakoidmembrane
H+
chlorophyll chlorophyll
light
light
H+
sugars CO2
ATPase
http://photoscience.la.asu.edu/photosyn/education/photointro.html
e-
e-
e-
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Chameleon Suit, Ed Hodgson 14
The Emergence of Enabling Technologies
Advanced MaterialsTechnologies
Bio-mimeticTechnologies
Advanced InformationTechnologies
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Chameleon Suit, Ed Hodgson 15
Advanced Materials Technology
Molecular DesignCapabilities
Nano-assemblyCapabilities
EngineeredPolymers /
Nano-composites
FunctionalMaterials
Thermal Optical
Chemical MechanicalCO2H2OO2
CO2H2OO2
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Chameleon Suit, Ed Hodgson 16
Advanced Information TechnologiesCAD / CASETools
AdvancedManufacture
AdvancedIntegration
ReducingScale
Smaller,Faster,Cheaper,Systems
Advanced,Electrically Active
Materials
Connectivity/Networking
Technologies
IntegratedIntelligence
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Chameleon Suit, Ed Hodgson 17
Bio-Mimetic TechnologiesLearning from nature
Understanding biological materials and processes
Biologically inspired designs and approaches
AdvancedMaterials Toolbox
EngineeredBio-mimetic Designs
Biocatalysts
Bio-membranes
Self assembling systems
ArtificialMuscles
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Chameleon Suit, Ed Hodgson 18
The Study Plan – What We Are Doing About It
• Technology exploration• System concept development• System concept characterization
– Prioritization and selection• NASA coordination• Technology needs and potential assessment• Roadmap definition
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Chameleon Suit, Ed Hodgson 19
The Study PlanSystem Evolution Perspective
Chameleon Suit Concept Evolution Roadmap
Enab
ling
Tech
nolo
gies
Res
earc
h N
eeds
& D
irect
ions
Con
cept
Evol
utio
n No-ExpendablesHeat Rejection
IntegratedHeat Pump
Self -FittingPressure Suit
IntegratedCO2 & H2O
Management
EnergyGeneration& Capture
O2Regeneration
SmartPolymers
MEMS
WearableElectronics
PolymericThermo-Electrics
Microturbines /Micro-channel HX
High ForceActive Polymer
AdvancedJoint Designs
ChemicalTransport SmartPolymers -
SelectiveMembranes
Polymer Photo- &Thermo-Electrics
Advanced EnergyStorage
Biomimetic TechnologiesArtificial Photosynthesis
2010 2040
Active PolymerSpaceEnvironmentTolerance
HighPerformance IRElectro-chromics
Fabric - MEMSIntegration
Large ScaleWearablesIntegration
Flexible, LightWeight,Thermo-electricHeat Pump
EfficientIntegratedMicro-FluidSystems
Electro-ActivePolymerMolecularDesign
AdvancedStructural Designand Modeling
ControlledAnisotropicMaterials
Chemically EnhancedTransport Membranes
TransportControlMechanisms
Integration WithActive Polymers
High Efficiency Photo ConversionExtended Life MetastableStatesEnhanced Charge Transfer
Broad Spectrum Photo-EnergyCapture
High Efficiency Thermal EnergyConversion
Low Energy Cost ReactionsOxygen RecoveryCarbon Fixation
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Chameleon Suit, Ed Hodgson 20
Where It All Leads