Station for Exploratory Analysis and Research Center for ...pbishay/PDFs/SEARCH_AIAA_Presentation.pdfStation for Exploratory Analysis and Research Center for Humanity (SEARCH) Authors:

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

SEARCH: 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

SEARCH: Proposed Design

• Mission Architecture

• Mission Timeline

• Budget

• Spacecraft Design and Mission

Specifications

• Technology Readiness

• Suggested Secondary Missions

3

SEARCH: Presentation Content

• Mission Architecture

• Mission Timeline

• Budget

• Spacecraft Design and Mission

Specifications ▪ 1G Method

▪ Structural Design

▪ Propulsion

▪ Orbit Selection

▪ Power

4

SEARCH: Presentation Content

• Spacecraft Design and Mission

Specifications - Continued ▪ Thermal

▪ Radiation

▪ Life Support

▪ Communications

▪ Robotic Maintenance

5

SEARCH: Mission and Timeline

• Artificial 1G Space Station ▪ 16-24 people

▪ 30 year Earth-Resupply Independent

Experiment

6 First Baby Born in Space

R&D

Mfg. & Assy.

Verification at 1G

Independence

First Launch to LEO

Transfer to Lunar Orbit

SEARCH: Budget

7

• Derived from

NASA FY 2016

budget ▪ Assumptions and

exceptions

• Launch schedule

and design

drive budget

allocation

SEARCH: Artificial Gravity

8

• Rotation chosen

for creating 1G

environment ▪ Speed: 4 rpm

▪ Radius: 56 m

SEARCH: Structure Design

9

• 24 Linear

Structural Modules

• 6 Inflatable

Habitats

• Central Hub

• Truss

• Stabilization

Cables

• Robotic Arm Track

SEARCH: Structure Design

• Structural Modules ▪ 3 Layer Wall

▪ Flexible Coupling

• Stabilization Cables ▪ Restrain Radial

motion

▪ 6x25 IWRC Filler

Cable

10

• Inflatable HABs ▪ 5 Layer Wall

– Nextel

– Polyurethane

open cell foam

– Kevlar

– Combitherm

– Nomex

▪ 180° Rotation – HAB Motor

SEARCH: Structure Design

11

SEARCH: LEO Assembly

• International Space Station ▪ Assembly Platform

• Friction-Stir Welding

• Launch Vehicles ▪ SLS Block 2B, Falcon Heavy, and Falcon 9

12

SEARCH: Orbit Selection

13

• Stable Polar Lunar

Orbit ▪ 56.2° Inclination

▪ Highly elliptical

▪ “Dark time”

▪ Daily interaction

with planned

NASA Lunar

outpost

SEARCH: 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

SEARCH: Hohmann Transfer

15

• Two impulse orbital

transfer maneuver

• Total ΔV = 3.42

km/s ▪ ΔVEarth = 3.18 km/s

▪ ΔVMoon = 0.24 km/s

• TOF = 183 days

SEARCH: Engine Selection

16

• RL-10 Engines ▪ 5.8:1 oxidizer to

fuel ratio

▪ 465s Specific

Impulse

▪ LOX/LH2

• Tsiolkovsky

Rocket Equation

SEARCH: Power

17

• Power Generation ▪ Solar Arrays

– Life Support

System

– Recharge Energy

Storage Devices

SEARCH: Power

18

• Energy Storage ▪ Flywheel System

– Dark Time Power

– Fused Silica Fiber

Composite

▪ Structural Battery

Walls – HAB Motor and

Robotic

Maintenance

System

– Lithium-Ion

Polymer

SEARCH: Power

• Power Distribution

19

HAB Motor

Life Support

Battery Walls

Flywheels Solar Arrays

Day Time Nominal Day Time with Motor Running Dark Time Nominal

SEARCH: Power

• Power Transmission ▪ Wired Transmission for Nominal Functions

▪ Laser Transmission – For Robotic Maintenance and Repair System

20

SEARCH: Thermal Management

• Dual loop cooling

system

• Carbon Fiber

Radiators

• Micrometeoroid /

Orbital Debris

Integrated Multilayer

Insulation

21

SEARCH: Radiation

• Passive Protection ▪ Hydrogen heavy composite layer

• Active Protection ▪ External Magnets

• Medical Protection ▪ Regiment of drugs

22

SEARCH: 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

SEARCH: Human Systems

• CO2 Removal ▪ Carbon Dioxide and Moisture Removal

Amine Swing-Bed (CAMRAS) System

▪ Series-Bosch system turns CO2 into Water

and Carbon

• Atmosphere monitored in real time by

Spacecraft Atmosphere Monitoring (SAM)

system

24

SEARCH: 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

SEARCH: Communications

26

• 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

SEARCH: Robotics

27

• Provides maintenance

for solar arrays,

antennas, HAB motors,

• Composition ▪ AL 7075-T6

• Mass ▪ 2023 kg

• Length ▪ 16 m

• Power ▪ Peak Power: 8 kW

SEARCH: Continued Work

28

• Power, Fuel, and

Consumables

• Fuel Tank

Configuration

• Solar Array Area

SEARCH: Conclusion

• Artificial 1G Space Station ▪ 16-24 people

▪ 30 year Earth-Resupply Independent

Experiment

▪ Lunar Orbit

29