1. AAE450 Senior Spacecraft Design Crystal Wilcox Week 3: February 1st, 2007 Structures Group Mars Habitat, Transfer Vehicle (Crew Hab)

2. AAE450 Senior Spacecraft Design Mars Habitat Specifications Mass, Volume, Thickness of Radiation Shielding and Material Living Quarters:Surface Area (m 2 )Volume (m 3 ) 69.11543.9823 Thickness (m)Volume (m 3 )Mass (kg) Polyethylene0.1611.058411058.4 Aluminum0.053.455759606.99 Total LQ Shielding0.2114.5141520665.39 Common Area:Surface Area (m 2 )Volume (m 3 ) 175.929150.796 Thickness (m)Volume (m 3 )Mass (kg) Polyethylene0.023.518583518.58 Aluminum0.011.759294890.83 Total CA Shielding0.035.277878409.41 MaterialThickness (m)Volume (m 3 )Mass AL (kg) Aluminum 70750.13966910.346929074.8 Structure + Shielding0.16966915.6247737484.21 Systems Section: Thickness (m)Volume (m 3 )Mass (kg) Polyethylene0.023.518583518.58 Aluminum0.011.759294890.83 Aluminum 70750.13966910.346929074.8 Total SS Shielding0.16966915.6247737484.21 Mitchell's Numbers from Human Factors For Radiation Shielding MassConsumablesShieldingMaterialSystems (kg)21793.529074.8 5639.25 VolumeConsumablesShieldingMaterialSystems (m^3)149.13619.79210.34699.086 Total Mass (kg)85582.35 Total Volume (m^3)188.3609 Total Volume of Shell (m^3)30.1389

3. AAE450 Senior Spacecraft Design Height (m)Diameter (m)Surface Area (m2) Living Quarters:3.5469.115 Common Area:38175.929 Systems Section:38175.929

4. AAE450 Senior Spacecraft Design Backup – Schematic Living Quarters –Center of Habitat. –Taller Than the Common Area surrounding it. –More Radiation Shielding. –Separated in 4 Sections for Private Quarters. –One Bed on Floor. –One Bed that Comes out of the inner wall Closest to the center.

5. AAE450 Senior Spacecraft Design Backup – Schematic Common Area –Kitchen Area –Bathroom Area –Small Food Storage Area –Rest is Split up into 4 common rooms Supply Area –Below the Common Area/Living Quarters –Atmosphere Supply –Water Supply –Mass Food Storage

6. AAE450 Senior Spacecraft Design Backup – Material Properties Elastic Modulus (Pa)Poisson's RatioDensity (kg/m^3) Yield Strength (Pa) Ultimate Tensile Strength (Pa) Shear Modulus (Pa) Aluminum 7075724000000000.33278044000000057200000028000000000 Density (kg/m^3)Volume (m^3) for thickness in living quartersVolume (m^3) for thickness in Common Area Polyethylene100011.05843.51858 Aluminum27803.455751.75929 Volume = Surface Area x Thickness

7. AAE450 Senior Spacecraft Design Backup – Forces and Stress Common Area MarsEarth Forces (N)216696570253 Stress (Pa)159647420123 System Area MarsEarth Forces297910783974 Stress219479577576 These Stresses pass the Yield Strength of the Aluminum 7075

8. AAE450 Senior Spacecraft Design Backup – Calculations Surface Area of a Cylinder = 2*pi*r^2 +2*pi*r*h Mass = Density x Volume Volume = M AL7075 / Density AL7075 Volume = pi*h*t AL7075 *(D – t AL7075 ) Stress = Force / (Base*thickness) F mars = (M rs + M AL7075 )x(0.38g) F Earth = (M rs + M AL7075 )x(1g)

9. AAE450 Senior Spacecraft Design Backup – Kate Mitchell’s Totals Total Mass and Volume for Habitat 2 Water total and Food Total ComponentMass (kg)Volume (m 3 ) Consumables*57730.57126.84 Crew Accommodations4994.9027.07 Water Recycling System200.000.80 Atmospheric Supply System5440.858.37 Private Quarters-60.00 Crew Common Area-60.00 Radiation Shielding26638.00- Totals95004.32283.08 Conservative (120%) Totals114005.18339.70

10. AAE450 Senior Spacecraft Design Backup – Kate Mitchell’s ComponentsMass (kg/p)Mass (kg)Volume (m3/p) Volume (m3) Sabatier Reactor (2x) [5] 763040.140.56 O2 Tankage [1] -1128.15-2.15 N2 Tankage [1] -3888.7-4.86 Contaminant Control System [5] 20800.150.6 Redundant Parts (10% system hardware)-38.4 0.116 Totals 5439.25 8.286 Water Recycling System CO 2 Removal/Oxygen Generation System Water Recycling SystemMassUnitsMass (kg)VolumeUnitsVolume (m3) Vapor Compression Distillation (VCD) (2x) [5] 50kg/p2000.2m3/p0.8

11. AAE450 Senior Spacecraft Design Backup – Kate Mitchell’s MassMass UnitsSubtotal (kg)VolumeVolume UnitsSubtotal (m 3 ) Galley and Food Systems Cooking/eating supplies (pans, plastic dishes, plates, etc.)5kg/p300.0014m3/p0.0084 Freezers0.75kg/kg food14572.80.00393m3/kg food76.361472 Conventional Oven50kg500.25m30.25 Microwave oven35kg350.15m30.15 Sink, spigot for hydration of food and drinking water15kg150.00135m30.00135 Dishwasher40kg400.56m30.56 Waste Collection System Waste Collection System (1 toilet)45kg452.18m32.18 Personal Hygiene Shower75kg751.41m31.41 Handwash/mouthwash faucet8kg80.01m30.01 Personal hygiene kit1.8kg/p10.80.005m3/p0.03 Clothing Washing machine100kg1000.75m30.75 Clothes dryer60kg600.75m30.75 Recreational Equipment and Personal Stowage Personal stowage/closet space50kg/p3000.75m3/p4.5 Housekeeping Vacuum (prime + 1 spare)8.7kg8.70.05m30.05 Trash compactor/trash lock150kg1500.3m30.3 Crew Health Care Exercise equipment145kg1450.19m30.19 Medical/Surgical/Dental suite1000kg10004m34 Medical/Surgical/Dental consumables500kg5002.5m32.5

12. AAE450 Senior Spacecraft Design Backup – Mitchell’s Consumables ConsumableMassMass UnitsHAB1 (kg)HAB2 (kg) Kitchen/oven cleaning supplies (fluids, sponges, etc)0.25kg/d391528 WCS supplies (toilet paper, cleaning solutions, filters, etc.)0.05kg/p/d312.8422.4 Contingency fecal and urine collection mittens/bags0.23kg/p/d (15 days)13.8 Hygiene supplies0.075kg/p/d469.2633.6 Clothing99kg/p396 Trash bags0.05kg/p/d312.8422.4 Total Mass 1895.62416.2 ConsumableVolumeVolume UnitsHAB1 (m3)HAB2 (m3) Kitchen/oven cleaning supplies (fluids, sponges, etc)0.0018m3/d2.81523.8016 WCS supplies (toilet paper, cleaning solutions, filters, etc.)0.0013m3/p/d8.132810.9824 Contingency fecal and urine collection mittens/bags0.0008m3/p/d (15 days)0.048 Hygiene supplies0.0015m3/p/d9.38412.672 Clothing0.336m3/p1.344 Trash bags0.002m3/p/d12.51216.896 Total Volume 34.23645.744

13. AAE450 Senior Spacecraft Design Backup – References Specifications From Breanne and Kirk Kate Mitchell’s Mass and Volume Numbers From Human Factors www.braeunig.us/space/specs/ares.htm AAE 454 Webct Detailed notes