the role of plants in space exploration - nasa · functional cargo module (fgb) service module...
TRANSCRIPT
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The Role of Plants
in Space Exploration:
Some History and Background
Raymond M. Wheeler
NASA Exploration Research and Technology
Kennedy Space Center, Florida, USA
https://ntrs.nasa.gov/search.jsp?R=20160011463 2020-06-01T14:18:54+00:00Z
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Human Life Support Requirements:
Source: NASA SPP 30262 Space Station ECLSS Architectural Control Document
Food assumed to be dry except for chemically-bound water.
Inputs
Daily (% total
Rqmt. mass)
Oxygen 0.83 kg 2.7%
Food 0.62 kg 2.0%
Water 3.56 kg 11.4%(drink and
food prep.)
Water 26.0 kg 83.9%(hygiene, flush
laundry, dishes)
TOTAL 31.0 kg
Outputs
Daily (% total
mass)
Carbon 1.00 kg 3.2%
dioxide
Metabolic 0.11 kg 0.35%
solids
Water 29.95 kg 96.5%(metabolic / urine 12.3%)
(hygiene / flush 24.7%)
(laundry / dish 55.7%)
(latent 3.6%)
TOTAL 31.0 kg
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Functional Cargo Module (FGB)
Service Module
AirlockAtmosphere and User Gas Bottles
Node 1
Laboratory Module
P
Node 2
ESA
COF
JEM PM
Atmosphere Gas Bottles
Progress Module
International Space Station Life Support Systems
Metal Oxide
Carbon Dioxide Removal
Primary Temperature and Humidity Control
Water Storage
Trace Contaminant Control
Water Processing (P=Potable; H=Hygiene)
Urine Processing
Personal Hygiene Facility
Galley
Oxygen Generation
Vacuum SystemPressure Control Assembly
O2 Compressor
Air Save Compressor
Miscellaneous Equip: Fans, Valves, Filters, Smoke Detectors, Portable Fire Extinguishers
Oxygen Storage
Nitrogen Storage
Major Constituent Analyzer
LEGEND
P/H
Node 3Habitation Module
ATV
HTV
CAM (Zenith)
Not Shown
MPLM
Node 3 Nadir
CRV (not shown)
UDM DSM
Sabatier (scar)
Full Body
Cleanser
Source: Jim Reuter, NASA MSFC
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food
(CH2O) + O2 CO2 + H2O
Clean Water Waste Water
Plants in Space for Life Support
HUMANSMetabolic
Energy
food
(CH2O) + O2* + H2O CO2 + 2H2O*
Clean Water Waste Water
PLANTS
Light
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Bioregenerative Life Support
Early references:
• Greg, P. 1880. Across the zodiac. (recently reprinted by BiblioBazaar, 2006).
• Tsiolkovsky, K.E. 1926. Exploration of world space with rockets. Kaluga (In Russian).
• Ley, W. 1948. Rockets and space travel. The future of flight beyond the stratosphere. The Viking Press, New York, NY, US. 374 pages.
• Specht, H. 1952. Toxicology of travel in the aeropause. In: C.S. White and O.O. Benson (eds.) Physics and Medicine of the Upper Atmosphere, University of New Mexico Press, Albuquerque.
• Bowman, N.J. 1953. The food and atmosphere control problem on space vessels. II. The use of algae for food and atmospheric control. J. British Interplanetary Soc. 12:159-167.
• Myers, J. 1954. Basic remarks on the use of plants as biological gas exchanges in a closed system. J. Aviation Medicine 25:407-411.
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Joseph Priestley--1772 “Patron Saint” of
Bioregenerative Life Support ?
“ I have been so happy as by accident to hit upon a
method of restoring air, which has been injured by the
burning of candles and I have discovered at least one
of the restoratives...it is vegetation ”
“...when I first put a sprig of mint into a glass jar
standing inverted in a vessel of water; it had continued
growing for some months [and] I found that the air
would neither extinguish a candle, nor was it at all
inconvenient to a mouse...”
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Bioregenerative Life Support Testing Around the World
1960 1980 2000
France Cadarache
US NASA
USSR Military
US Military
Russia - Inst. of Biophysics--IBP (Krasnoyarsk, Siberia)
Russia- Inst. for Biomedical Problems--IMPB (Moscow)
China Natl. Space Agency
University Studies (US, Europe, Japan, Canada)
European Space Agency MELISSA
NASA (CELSS) NASA (ALS) NASA (LSHS) AES/HDU
Japan Aerospace Lab.; Inst. Env. Sci. (IES); JAXA Chofu
Canada Univ. Guelph / CSA
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Crop Considerations for Space
• High yielding and nutritious
• High harvest index (edible / total biomass)
• Horticultural considerations
– planting, watering, harvesting, pollination, propagation
• Environmental considerations
– lighting, temperature, mineral nutrition, CO2
• Processing requirements
• Dwarf or low growing types
• Cultural preferences for food
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NASA’s Biomass Production Chamber (BPC)
Control Room
External View - Back
Hydroponic System
20 m2 growing area; 113 m3 vol.; 96 400-W HPS Lamps;
400 m3 min-1 air circulation; two 52-kW chillers
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Wheat(Triticum aestivum)
planting
harvest
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Soybean(Glycine max)
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Lettuce (Lactuca sativa)
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Potato(Solanum tuberosum)
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Closed System CO2 Uptake / O2 Production(20 m2 Soybean Stand)
Wheeler. 1996. In: H. Suge
Plants in Space Biology.
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High Yields from High Light and CO2 Enrichment
Wheat - 3-4 x World Record
Potato - 2 x World Record
Lettuce-Exceeded Commercial
Yield Models
Utah State
University
Univ. Wisconsin Biotron
NASA Kennedy
Space Center
Bubgee, and Salisbury. 1988. Plant Physiol; Wheeler et al. 1991. Crop Sci; Wheeler et al. 1994. J. Amer. Soc. Hort. Sci.
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Light, Productivity, and Crop Area Requirements
Light (mol m-2 day-1)
Are
a R
eq
uir
ed
(m
2/ p
ers
on
)
Pro
du
cti
vit
y (
g m
-2d
ay
-1)
0 10 20 30 40 50 60 70 80
0
5
10
15
20
25
30
ProductivityArea
0
20
40
60
80
100
120
140
Bright SunnyDay on Mars
Wheeler. 2004. Acta Hort.
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Integrated Testing with Humans
→ One Human and 11 m2 of Wheat !
Nigel Packham, NASA Johnson
Space Center
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Metrics for Assessing Space Life Support Technologies
• Mass
• Power
• Volume
• Crew Time
• Concept of Equivalent System Mass or ESM
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“Intangible” Aspects of Plants in Remote Environments; Biophilia?(Photo from US South Pole Plant Chamber)
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Novel Crops for Space
Dwarf plums with over-expressed
FT flowering gene (USDA / ARS)
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Current Estimates for Plants and Life
Support (for one person)
• < 5 m2 for drinking and hygiene water
• 20 - 25 m2 for O2 requirements and CO2 removal
• 40 - 50 m2 for food (2500 kcal day-1)
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A “Priestley Experiment” on Mars?
Technical Challenges:•Efficient Lighting Concepts
•Optimized Water and Nutrient Management
•Mechanization and Automation
•Improved Crops for Space Settings
How do we get started?•International Space Station
•Cis-Lunar or Mars Transit Vehicles
•Lunar Outposts
•Mars Outposts
•Autonomous Space Colonies
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Thank You !
• Kennedy Space Center
Florida