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個人宇宙アクセス Wiki
個人の宇宙アクセスを、月アクセスのコスト構造、小型衛星の信号経路、軌道投入、宇宙機の最小条件、運用安全、回復境界のノードで整理します。
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CosmosExplore のマップとコストモデルで使う中心概念です。
Personal boundaryPersonal, not commercial boundaryThe personal boundary states that the mission is for learning and hobby exploration, not communications, remote-sensing, or launch service provision.Review ledgerMission review ledgerA mission review ledger preserves sources, boundaries, authorizations, tests, and post-mission lessons in one auditable record.Payload recoveryPayload recoveryPayload recovery first means data and state recovery; physical recovery of LEO hardware is usually not a personal first objective.Attitude boundaryAttitude control boundaryThe attitude control boundary separates understanding pointing needs from publishing operational control procedures.Antenna deploymentAntenna deploymentAntenna deployment is a common communications failure point and must be treated as a review item, not an assumption.Safe modeSafe modeSafe mode is a low-risk, low-power, low-function state that preserves identification and recovery chances.WatchdogWatchdog resetA watchdog reset is a recovery mechanism that returns a stalled or abnormal system to a known state.OBCOnboard computerAn onboard computer runs limited mission logic, records telemetry, and manages conservative behavior after faults.Thermal budgetThermal budgetA thermal budget checks heat absorbed, generated, stored, and rejected against component survival and operation limits.Battery safetyBattery safetyBattery safety asks whether stored energy can remain safe during launch, orbit, anomaly, and end of mission.Power budgetPower budgetA power budget separates generation, storage, and loads so power-on is not confused with mission capability.Remote sensing boundaryRemote sensing boundaryThe remote sensing boundary flags that Earth imaging or Earth-data collection may require a dedicated licensing determination.
アクセスコスト
Transfer modelCislunar transport modelThe cislunar transport model represents the extra cost and logistics between low Earth orbit and lunar staging.Crew fixedCrew-system fixed costCrew-system fixed cost captures vehicle, service module, ground system, and other human-flight assumptions that do not shrink with passenger count in a simple way.Launch costEarth launch costEarth launch cost is the first line item: mission mass multiplied by a launch-price assumption or replaced by a fixed launcher baseline.AffordabilityHousehold price targetA personal-access target is a boundary condition for asking what would have to change, not a promise that a route exists.$/kgLaunch price per kgPublic launch price per kilogram can anchor one part of the model, but it does not price a human lunar mission by itself.Cost stackLunar access cost stackThe cost stack separates Earth launch, cislunar transfer, landing, crew support, risk, and operations instead of collapsing them into one ticket-like number.MassMission massMission mass is the movable payload and system mass that cost models multiply through launch and transfer assumptions.DistanceMoon distanceMoon distance is the physical baseline that keeps lunar access outside ordinary travel economics.Ops marginOperations marginOperations margin keeps model uncertainty visible instead of treating subtotal arithmetic as an executable mission plan.SLS/OrionSLS/Orion cost baselineThe public SLS/Orion baseline shows how national-scale crew launch remains far from personal-scale affordability.
軌道アクセス
Hosted payloadHosted payloadA hosted payload places a personal experiment on another compliant space platform instead of making the hobbyist the full satellite operator.Launch environmentLaunch environmentLaunch environment covers vibration, shock, vacuum, temperature, and interface constraints that determine whether a payload can ride safely.Orbit selectionOrbit selectionOrbit selection affects contact windows, mission lifetime, debris risk, and disposal responsibility.Payload definitionPayload definitionPayload definition states what will fly, why it will fly, who is responsible, and what it must not do.Integration reviewPayload integration reviewPayload integration review checks that a payload will not harm the primary mission, launch system, personnel, or other spacecraft.Rideshare deployerRideshare deployerA rideshare deployer is the compliant interface context for releasing a small spacecraft as a secondary payload.
地月ロジスティクス
TransferCislunar transferCislunar transfer is the mission phase that turns Earth-launch assumptions into lunar staging requirements.BoiloffCryogenic boiloffCryogenic boiloff is a loss and thermal-management context that can weaken depot or refueling assumptions.NRHONRHO stagingNear-rectilinear halo orbit staging appears in Artemis lunar-lander sequencing and changes where refueling and transfer assumptions meet.RefuelingOrbital refuelingOrbital refueling moves part of the bottleneck from launch vehicle size to tanker flights, storage, transfer, and sequencing.DepotPropellant depotA propellant depot is a storage and sequencing node; it can enable architectures while adding infrastructure and loss mechanisms.TankersTanker launchesTanker launches make refueling a campaign problem rather than a single-launch arithmetic problem.EfficiencyTransfer efficiencyTransfer efficiency expresses how much delivered propellant remains usable after handling, timing, and loss assumptions.
制御 / 回復
Attitude boundaryAttitude control boundaryThe attitude control boundary separates understanding pointing needs from publishing operational control procedures.Uplink boundaryCommand uplink boundaryThe command uplink boundary defines which command capabilities must be authorized, limited, logged, and stoppable.Payload recoveryPayload recoveryPayload recovery first means data and state recovery; physical recovery of LEO hardware is usually not a personal first objective.
打上げ輸送
CadenceLaunch cadenceLaunch cadence matters because reusable systems only change the cost floor when operations can absorb repeated flights.ReuseReusable first stageReusable first stages can change launch economics, while upper stages, integration, cadence, and assurance still remain in the stack.RideshareRideshare launch anchorSmall-satellite rideshare pricing is a public commercial anchor for low Earth orbit, not a human lunar transport quote.Upper stageUpper-stage expendablesReusable boosters do not automatically remove expendable upper-stage or mission-integration costs.
生命維持 / 乗員
ReserveConsumables reserveConsumables reserve is the buffer for water, oxygen, food, and contingency needs that grows with crew-days and mission risk.Crew daysCrew daysCrew days turn life support from equipment inventory into a time-dependent mass, maintenance, and reliability problem.ECLSSECLSSEnvironmental Control and Life Support Systems connect water recovery, air revitalization, oxygen generation, and crew-duration assumptions.O2 gen.Oxygen generationOxygen generation is part of the life-support loop; it moves crew-days from stored consumables toward system reliability.Water rec.Water recoveryWater recovery reduces resupply pressure only under reliability, power, maintenance, and crew-duration constraints.
月面運用
ISRU propISRU propellant chainAn ISRU propellant chain requires water access, energy, processing, storage, quality control, and transport before it can change imported mass.ISRU waterISRU waterLunar water is a resource signal; it does not become a cost reducer until extraction, processing, storage, and reliability are modeled.AscentLunar ascentLunar ascent keeps return capability visible; a surface visit is not complete until ascent and rendezvous assumptions are closed.DustLunar dustLunar dust is a surface operations risk context that can affect mechanisms, seals, maintenance, and assurance assumptions.LandingLunar landingLunar landing is a separate mission phase with vehicle, propellant, site, and assurance assumptions beyond cislunar transfer.Surface opsLunar surface operationsSurface operations connect landing, crew time, power, dust, maintenance, and return assumptions.PowerSurface powerSurface power is a prerequisite for many surface operations and for any resource-processing chain.
運用安全
Amateur satelliteAmateur-radio satellite serviceThe amateur-radio satellite service is a non-commercial educational radio context with its own eligibility and operating limits.Disposal planDeorbit / disposal planA deorbit or disposal plan explains how the mission avoids leaving the spacecraft as a long-lived orbital hazard.Frequency authorizationFrequency authorizationFrequency authorization is the regulatory boundary that must be resolved before any space-to-ground radio operation.Debris mitigationOrbital debris mitigationOrbital debris mitigation requires a mission to limit long-lived risk after deployment, anomaly, or end of mission.Remote sensing boundaryRemote sensing boundaryThe remote sensing boundary flags that Earth imaging or Earth-data collection may require a dedicated licensing determination.TLE trackingTLE trackingTLE tracking uses public orbital element sets to support pass prediction and object identification.
個人衛星ミッション
Verified messageLEO verified messageA minimal orbital objective: a small spacecraft in low Earth orbit sends an authenticated message that can be received and verified from the ground.Review ledgerMission review ledgerA mission review ledger preserves sources, boundaries, authorizations, tests, and post-mission lessons in one auditable record.Personal boundaryPersonal, not commercial boundaryThe personal boundary states that the mission is for learning and hobby exploration, not communications, remote-sensing, or launch service provision.
リスク / 政策
Human ratingHuman ratingHuman rating is a boundary label for crewed-system assurance expectations, not a general safety promise.InsuranceInsuranceInsurance is a risk-pricing layer; it can respond to mission assurance, regulation, and operational maturity.AssuranceMission assuranceMission assurance keeps reliability, review, testing, operations, and contingency work visible in the cost model.RegulationRegulationRegulation defines permissions, oversight, and operating boundaries that must be separated from engineering feasibility.ReturnReturn chainReturn chain closes the access problem by tying ascent, rendezvous, transit, recovery, and assurance assumptions together.
信号経路
Integrity checkData integrity checkA data integrity check verifies that a received message matches the spacecraft record and has not been confused with another signal.Pass windowGround pass windowA ground pass window is the short interval when an orbiting spacecraft is visible from a ground location.Ground stationGround stationA ground station is the authorized Earth-side system that receives, records, and may communicate with a spacecraft.Link budgetLink budgetA link budget checks whether a communication path has enough margin, but this entry does not publish actionable radio parameters.Network handoffNetwork handoffNetwork handoff moves received ground-station data into a controlled network, file store, or application interface.Store-forwardStore and forwardStore and forward lets a spacecraft keep data while out of view and deliver it during an authorized contact window.BeaconTelemetry beaconA telemetry beacon is a low-rate health and identity signal that proves the spacecraft can still be recognized and heard.
宇宙機の最小条件
Antenna deploymentAntenna deploymentAntenna deployment is a common communications failure point and must be treated as a review item, not an assumption.Battery safetyBattery safetyBattery safety asks whether stored energy can remain safe during launch, orbit, anomaly, and end of mission.OBCOnboard computerAn onboard computer runs limited mission logic, records telemetry, and manages conservative behavior after faults.Small form factorPocketQube / CubeSat form factorPocketQube and CubeSat language gives a scale reference for small spacecraft constraints without treating the form factor as a flight plan.Power budgetPower budgetA power budget separates generation, storage, and loads so power-on is not confused with mission capability.Safe modeSafe modeSafe mode is a low-risk, low-power, low-function state that preserves identification and recovery chances.Thermal budgetThermal budgetA thermal budget checks heat absorbed, generated, stored, and rejected against component survival and operation limits.WatchdogWatchdog resetA watchdog reset is a recovery mechanism that returns a stalled or abnormal system to a known state.