Suited for Spacewalking pdf - Virtual Astronaut

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crew, an additional portable heat shield was erectedover the first.The Skylab EMU was a simplified version ofthe Apollo Moon suits. There was no need for thep o rtable life - s u p p o rt system because the crewmember was attached to the station by an umbilicaltether that supplied oxygen and cooling water. Ana s t ronaut life - s u p p o rt assembly, c onsisting of apressure-control unit and an attachment for thetether, was worn on the chest, and an emergencyoxygen package containing two supply bottles wasattached to the right upper leg. A simplified visorassembly was worn over the pressure helmet. Lunarprotective boots were not needed.Skylab astronautslogged 17.5 hours of planned EVA for film andexperiment retrieval and 65 hours of unplannedEVA for station repairs.1 6 • Suited for Spacewalking An Activity Guide for Technology Education, Mathematics, and Science, EG- 1 9 9 8 - 0 3 - 1 1 2 - H Q
The Space Shuttle Extravehicular Mobility Unit (EMU)As NASA changed from launching astronautson expendable rockets to the Space Shuttle systemwith its reusable orbiter and solid rocket boosters,spacesuit engineers began deve l o pment of areusable EMU. Previously, all spacesuits were onetimegarments. Spacesuits were custom-built toeach astronaut’s body size. In the Apollo program,for example, e a ch astronaut had three customsuits—one for flight, one for training, and one forflight backup. Shuttle suits, however, are tailoredfrom a stock of standard-size parts to fit astronautswith a wide range of measurements.In con s t ructing the Shuttle spacesuit, d eve l o p-ers were able to con c e n t rate all their designs tow a rda single function — going EVA . Suits from earl i e rmanned spaceflight pro g rams had to serve mu l t i p l ef u n c t i on s . T h ey had to provide backup pre s s u re incase of cabin pre s s u re failure and, on Geminim i s s i on s , p ro t e c t i on if ejection became necessaryd u ring launch .T h ey also had to provide an env i ronmentfor EVA in micro g ra v i ty and in low gra v i tywhile walking on the Moon (Ap o llo mission s ) .Su i t sw e re worn during lift off and re e n t ry and had to bec om f o rtable under the high-g forces experi e n c e dd u ring accelera t i on and decelera t i on . Shuttle suitsa re worn on ly when it is time to ve n t u re outside theo rbiter ca b i n . At other times, c rew members wearc om f o rtable shirts and slack s , or short s . For launchSuited for Spacewalking An Activity Guide for Technology Education, Mathematics, and Science, EG-1998-03-112-HQ • 1 7
Page 1: National Aeronauticsand Space Admin
Page 6 and 7: National Education StandardsThe act
Page 8 and 9: National Mathematics StandardsNatio
Page 10 and 11: M e a s u r e m e n tThis activity
Page 12 and 13: need to be able to move arms, hands
Page 14 and 15: out in the vacuum of space.Dissolve
Page 16 and 17: Project MercuryEarly spacesuit desi
Page 18 and 19: to occur for the first time. As wit
Page 22 and 23: and reentry, special orange-colored
Page 24 and 25: The SCU contains lines for power, c
Page 26 and 27: 17.Communications Carrier Assembly
Page 28 and 29: settings to be read. Setting number
Page 30 and 31: digital display on the chest-mounte
Page 32 and 33: Astronaut Joe Tanner works on the H
Page 34 and 35: humidity when oxygen is flowing fro
Page 36 and 37: The problem of picking up rocks and
Page 38 and 39: Bruce McCandless II pilots the MMU
Page 40 and 41: Mark C.Lee test flies the Simplifie
Page 42 and 43: STS-76 astronaut Michael R. Cliffor
Page 44 and 45: Spacesuit technicians test the mobi
Page 46 and 47: Future spacewalkers will roam the s
Page 48 and 49: Introduction:The steps spacesuit en
Page 50 and 51: Design BriefC o n t ex t :Spacesuit
Page 52 and 53: Interface Control DocumentPage 1 Of
Page 54 and 55: Pulley close-upviewthe buck e t . T
Page 56 and 57: to them. Use a metric ruler for mea
Page 58 and 59: steel would make an excellent micro
Page 60 and 61: d ay or tw o, Ap o llo spacesuit ma
Page 63 and 64: Sleeve and Leg TesterInflated segme
Page 65 and 66: ity alone.If a scale were present,
Page 67 and 68: Exploration BriefMicrometeoroids an
Page 69 and 70: InvestigationPotato Astronaut—Par
Page 71 and 72:
Exploration BriefKeeping Your CoolC
Page 73 and 74:
AssessmentHave students design a gr
Page 75 and 76:
InvestigationInsulating LayersIn th
Page 77 and 78:
e nv i ronment experienced in Earth
Page 79 and 80:
Arm Range of Movement Data SheetSub
Page 81 and 82:
Body Size Range MeasurementsBased o
Page 83 and 84:
ProcedureStep 1. Obtain the materia
Page 85 and 86:
Magnified view oftire valve and cla
Page 87 and 88:
Extensions• Compare the stiffness
Page 89 and 90:
2. Tethers4. Connector Seal TestPla
Page 91 and 92:
9. Vacuum Experiment - 1Obtain an e
Page 93 and 94:
You can investigate neutral buoyanc
Page 95 and 96:
MMUMercuryORUPLSSRegolithRMSSCUSkyl
Page 97 and 98:
NA S A’s Central Ope ra tion of R
Page 99:
Suited for Spacew a l k i n gA Te a
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