Design of a Piloted Spacecraft to Bridge the Gap between the Space Shuttle and Crew Exploration...
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Transcript of Design of a Piloted Spacecraft to Bridge the Gap between the Space Shuttle and Crew Exploration...
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Design of a Piloted Spacecraft to Bridge the Gap between the Space Shuttle and Crew Exploration VehicleMichael SeibertUniversity of Colorado at Boulder
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Presentation OverviewMotivationVehicle RequirementsConceptual DesignCompatible Launch VehiclesConclusions
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MotivationHiatus in piloted spaceflight capability2010-2014Four OptionsExtend STS operations past 2010Contract with foreign governmentsAccelerate CEV developmentDevelop a new vehicle
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Vehicle Requirement AreasCrew SizeLaunch Vehicle CompatibilityLaunch AbortOrbital ManeuveringRendezvous and DockingOn Orbit LifeRecoveryReusability
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Vehicle Requirement SummaryCrew Size5 person crew
Launch Vehicle CompatibilityAny 2005 existing or final design phase LV
Launch AbortCapability must be provided
Orbital Maneuvering300-400m/s VRotation and translation
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Vehicle Requirements SummaryRendezvous and Docking2 days maximumAutomatedDock with US segment
On Orbit Lifetime100 day minimum
RecoveryReentry75nm cross range500nm down rangeRecovery ContinuedControllable DescentLandingNondestructiveConventional Runway
ReusabilityReturned components only
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Conceptual DesignWinged VehicleProsHighly maneuverableRunway landingConsHigh temperature reentry
CapsuleProsLower temperature reentrySimpler designConsLow maneuverabilityRequires parachute for landing
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Conceptual DesignCrew SizeTwo row arrangementECLSSLiOH scrubbersSeparate ascent and descent air supplies
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Conceptual DesignRendezvousAutomated approachDeployable radar system
DockingAPAS-89 docking adapter[1]
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Conceptual DesignRecoveryLift vector generationOffset center of mass and shaped heat shieldParafoil descent1NM-2NM maneuvering rangeLandingTricycle landing gearControlled rolloutDifferential braking
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Conceptual DesignReaction Control SystemRoll/translation thruster pairsTranslation only pairsOrbital Maneuvering SystemSingle engine on roll axis
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Conceptual DesignMiscellaneousS/C CoolingHeat exchangers (water/ammonia)Crew ingress/egressHatch on port side next to rear seatsWindowsFour2 30cm diameter next to rear seat rows2 next to front seats
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Conceptual Design
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Compatible Launch VehiclesEstimated Spacecraft Mass11,000kg*Delta IV FamilyMedium+ (4,2)$138MMedium+ (5,4)$160MAtlas V Family400 series$138M
*Based upon historical spacecraft densities, see accompanying paper
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ConclusionsIt is possible to develop a new vehicle before 2010The vehicle described will provide unprecedented launch flexibilityThe vehicle describe can be used to complement the resumption of exploration beyond LEO
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Questions?
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ReferencesBackground Image: NASA http://solarsystem.nasa.gov/multimedia/gallery/ Columbia_Moon.jpg[1]Portree, D. Mir Hardware Heritage. NASA RP 1357. NASA, Houston. March 1995
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