Station for Exploratory Analysis and Research Center for Humanity (SEARCH) Authors: Jasmine Wong, Matthew Decker, Joseph Lewis, Megerditch Arabian, and Dr. Peter Bishay California State University, Northridge Region VI Student Conference, April 1-3 2016 Oregon State University, Corvallis, OR
Need Permanent Human Expansion Microgravity Space Flight Muscle and Bone Atrophy Visual Impairment Embryo Development More Research 1G Environment Extended Earth-Resupply Independence Required for Future Missions 2
Proposed Design Mission Architecture Mission Timeline Budget Spacecraft Design and Mission Specifications Technology Readiness Suggested Secondary Missions 3
Presentation Content Mission Architecture Mission Timeline Budget Spacecraft Design and Mission Specifications 1G Method Structural Design Propulsion Orbit Selection Power 4
Presentation Content Spacecraft Design and Mission Specifications - Continued Thermal Radiation Life Support Communications Robotic Maintenance 5
Mission and Timeline Artificial 1G Space Station 16-24 people 30 year Earth-Resupply Independent Experiment R&D Mfg. & Assy. Verification at 1G Independence First Launch to LEO Transfer to Lunar Orbit First Baby Born in Space 6
Budget Derived from NASA FY 2016 budget Assumptions and exceptions Launch schedule and design drive budget allocation 7
Artificial Gravity Rotation chosen for creating 1G environment Speed: 4 rpm Radius: 56 m 8
Structure Design 24 Linear Structural Modules 6 Inflatable Habitats Central Hub Truss Stabilization Cables Robotic Arm Track 9
Structure Design Structural Modules 3 Layer Wall Flexible Coupling Stabilization Cables Restrain Radial motion 6x25 IWRC Filler Cable 10
Structure Design Inflatable HABs 5 Layer Wall Nextel Polyurethane open cell foam Kevlar Combitherm Nomex 180 Rotation HAB Motor 11
LEO Assembly International Space Station Assembly Platform Friction-Stir Welding Launch Vehicles SLS Block 2B, Falcon Heavy, and Falcon 9 12
Orbit Selection Stable Polar Lunar Orbit 56.2 Inclination Highly elliptical Dark time Daily interaction with planned NASA Lunar outpost 13
Rotation & Orbit Maintenance Systems Initial spin-up: MR-107N engines Fuel: Hydrazine Spin-up time NSTAR Engines Fuel: Xenon Rotation maintenance Lunar Orbit Station Keeping VASIMR Fuel: Xenon Lunar Orbit Altitude Maintenance 14
Hohmann Transfer Two impulse orbital transfer maneuver Total ΔV = 3.42 km/s ΔV Earth = 3.18 km/s ΔV Moon = 0.24 km/s TOF = 183 days 15
Engine Selection RL-10 Engines 5.8:1 oxidizer to fuel ratio 465s Specific Impulse LOX/LH 2 Tsiolkovsky Rocket Equation 16
Power Power Generation Solar Arrays Life Support System Recharge Energy Storage Devices 17
Power Energy Storage Flywheel System Dark Time Power Fused Silica Fiber Composite Structural Battery Walls HAB Motor and Robotic Maintenance System Lithium-Ion Polymer 18
Power Power Distribution Solar Arrays Life Support HAB Motor Flywheels Battery Walls Day Time Dark Day with Time Motor Nominal Running 19
Power Power Transmission Wired Transmission for Nominal Functions Laser Transmission For Robotic Maintenance and Repair System 20
Thermal Management Dual loop cooling system Carbon Fiber Radiators Micrometeoroid / Orbital Debris Integrated Multilayer Insulation 21
Radiation Passive Protection Hydrogen heavy composite layer Active Protection External Magnets Medical Protection Regiment of drugs 22
Human Systems Aquaponic food growing system Primarily focusing on tilapia, beans, corn, and squash Water recycled through Vapor Phase Catalytic Ammonia Removal (VPCAR) system Projected 98% recycling rate Waste removed using Plasma Arc Waste Destruction System(PAWDS) 23
Human Systems CO 2 Removal Carbon Dioxide and Moisture Removal Amine Swing-Bed (CAMRAS) System Series-Bosch system turns CO 2 into Water and Carbon Atmosphere monitored in real time by Spacecraft Atmosphere Monitoring (SAM) system 24
Communications High Gain Antenna (HGA) Primary source of communication, large data transfer. Low Gain Antennas (LGA) Emergency backup communications Ultra-High Frequency (UHF) Antennas Communication with vehicles on moon s surface NASA Deep Space Network (DSN) 25
Communications Cassegrain design Sub reflector, feed horn 8 meter dish Frequencies X band Ka band Two Axis Gimbal Mounted on the Habitat ring Maintain LOS with DSN ground terminal 26
Robotics Provides maintenance for solar arrays, antennas, HAB motors, Composition AL 7075-T6 Mass 2023 kg Length 16 m Power Peak Power: 8 kw 27
Continued Work Power, Fuel, and Consumables Fuel Tank Configuration Solar Array Area 28
Conclusion Artificial 1G Space Station 16-24 people 30 year Earth-Resupply Independent Experiment Lunar Orbit 29