Deep Drill Active HT2

Information about Deep Drill Active HT2

Published on August 9, 2007

Author: VolteMort

Source: authorstream.com

Content

Mars Deep DrillExplore Active Hydrothermal Habitats:  Mars Deep Drill Explore Active Hydrothermal Habitats Sylvia Miller, John Essmiller, David Beaty Jet Propulsion Laboratory, California Institution of Technology January 16, 2004 Slide2:  NOTE: This is a product of a preliminary, representative mission study. Contact: James F. Jordan Manager, Pre-Projects and Advanced Studies Office Jet Propulsion Laboratory, California Institution of Technology Email: [email protected] OR Authors: Sylvia Miller ([email protected]) John Essmiller ([email protected]) David Beaty ([email protected]) Pathway Mapping:  Pathway Mapping Bold, red text indicates the case described in this package. Earliest Possible 'Pathways-Compatible' Launch: May 2018 Mars Deep Drill: Explore H-T Habitats (active) Science:  Mars Deep Drill: Explore H-T Habitats (active) Science Science objectives [MEPAG #] Characterize the geology (stratigraphy, structure, chemistry) and geophysics of the shallow Martian crust at one site, particularly as it relates to interpreting present habitability Determine as a function of depth the geologic processes which have resulted in deposition, hydrothermal alteration, diagenesis, and tectonic modification of the Martian geologic record [18, 20, 63, 74, 79, 83, 92, 121, 134, 144] Investigate the thermal characteristics of the Martian subsurface [109] Obtain visual and spectroscopic images of the local landing site to establish context for the subsurface sample analysis and to determine the surface landing location [61] Search for past or present life in the subsurface at one site Determine the concentration of frozen and liquid water in the Martian subsurface, and its textural relationship to the non-volatile components [ 3, 123, 56, 4, 11, 13, 15, 10] Evaluate the presence/absence of both fossil biosignatures and biosignatures for living organisms [4, 5, 11, 13] Record the meteorology at one site for at least one Martian year [34, 115, 126, 128] Candidate Instruments Drill (10 to 50m) Organics andamp; Evolved Gas Analyzer Life Detection Suite Mineralogy/Chemistry Lab Microimager Stereo Panoramic Camera with Point Spectrometer Meteorological Station Drill camera Downhole Ice/Water Detector Borehole Camera Heat Flow with Thermal Experiments Mars Deep Drill: Explore H-T Habitats (active) Science Feed Forward:  Mars Deep Drill: Explore H-T Habitats (active) Science Feed Forward Evidence of life would alter nation’s Mars program Confirmation of liquid water would support further search for life Understanding subsurface processes would allow us to more accurately predict : Subsurface life detection targets Possible resource availability for future human missions Mars Deep Drill: Explore H-T Habitats (active) MEPAG Investigations Addressed:  Mars Deep Drill: Explore H-T Habitats (active) MEPAG Investigations Addressed Mars Deep Drill: Explore H-T Habitats (active) Mission*:  Mars Deep Drill: Explore H-T Habitats (active) Mission* Scenario Land at site thought to be an active hydrothermal deposit. Assume latitude between 60 S and 60 N. Altitude limited to +2.5 km. Drill to at least 10 to 50m with continuous or frequent downhole science (50m baselined here). Deliver samples to surface about every 1 m. All samples imaged. At least 50 samples analyzed. Drill rate varies with rock characteristics and power For this study, assumed 30 cm/hour average. 450 days allocated for drilling and sample analysis, including approx. 100 days of margin. Additional week of post-drilling subsurface thermal analysis. Trajectory Type I C3 of 9.2 km2/s2 Flight time 8 months Arrival V ~3.3 km/s LV: Atlas V 521 or Delta IV 4450-14 LV Capability 3750-3820 kg at this C3 Need 5-m fairing Launch Date May 2018 (assumes 20 day launch period) Arrival Date January 2019 Ls = 321 deg Geometry Direct entry Pinpoint landing (~100 m) (masses used here are from 2020 Present Life study; could optimize further for 2018) * Data relevant to 2018 launch opportunity, with pinpoint landing Mars Deep Drill: Explore H-T Habitats (active) Spacecraft*:  Mars Deep Drill: Explore H-T Habitats (active) Spacecraft* Performance attributes Based on MSL Hazard Detection and Avoidance Nuclear power source 2 MMRTGs generating 220 W total Pinpoint Landing (100 m) Payload Mass 180 kg Payload Infrastructure Mass 150 kg Autonomous drill operations Drill realignment and relocation capability All X-band lander Planetary Protection category IVb Flight system elements Lander 965 kg including payload Descent Stage 1080 kg wet Entry System 798 kg wet Carrier 407 kg wet Biobarrier 31 kg released at launch (additional 30 kg included in carrier mass) Total Launch Mass = ~3281 kg Margins 30% mass contingency 30% power contingency 14-16% (469-539 kg) launch margin (LV dependent) * Data relevant to 2018 launch opportunity, with pinpoint landing Mars Deep Drill: Explore H-T Habitats (active) Mass Table*:  Mars Deep Drill: Explore H-T Habitats (active) Mass Table* * Data relevant to 2018 launch opportunity, with pinpoint landing data from 2020 Present Life      study (could optimize further for 2018) ** The mass of the other half of the bioshield (30 kg) is included with the Carrier *** Using lower-performing LV ** ** *** Mars Deep Drill: Explore H-T Habitats (active) Technology / Infrastructure*:  Mars Deep Drill: Explore H-T Habitats (active) Technology / Infrastructure* Critical Technology Needs [MEPAG#] Autonomous deep drilling with low mass and power needs [177, 178, 183, 184] Instruments Down hole, e.g., ice/water detector; thermal measurements Life-detection instrument(s) Sample Preparation and Distribution (SPAD) System advances Planetary Protection advances (IVb) Pinpoint landing [152] MSL Descent stage [154] Precision landing (5 x 10 km) [154] Hazard detection and avoidance [153] MMRTGs SPAD gen. 1 Long-term survivability Infrastructure Need MTO follow-on with both transmit and receive X-band proximity link Technology cutoff FY14 (TRL 6) PDR Nov. 2014 Candidate Technology Demos for Future Missions None identified to date Infrastructure feed forward None identified to date * Data relevant to 2018 launch opportunity, with pinpoint landing Slide11:  Definition of terms Biosignature Any indicator of biology, whether fossil or living. Extant life General reference to living species, which may also possess a fossil record. Extinct life General reference to extinct species that only exist as fossils. Fossil biosignature Fossil evidence of life, whether morphological, mineralogical or chemical. Biosignatures for living organisms Evidence of either active metabolism or the unaltered cellular structures of extant organisms. Source: Astrobiology Sub-Team of PSIG (2002) Slide12:  Life detection investigation An investigation which is able to identify evidence of life (by observation or measurement of a biosignature), but which cannot distinguish whether the life form is still alive or not. Extant life investigation An extant life investigation is one which is able to demonstrate that an organism is either alive or recently dead (by observing biosignatures of living organisms), and to interpret some properties of its life processes. Habitability The degree to which a geologic environment has or had the potential to support life of any form. Definition of terms Source: Astrobiology Sub-Team of PSIG (2002)

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