Need for Commercial Cargo to ISS William Gerstenmaier NASA Associate Administrator for Space Operations ISS_CM_019 FAA Commercial Space Transportation Advisory Council May 18, 2007 1
ISS Cargo Supply Strategy • NASA is developing an ISS Cargo Supply Strategy that uses a mixed fleet (ATV, HTV, Progresses and US domestic cargo service providers). • Strategy requires purchase of domestic delivery services as soon as available. • International Partner barters will also be used as identified in the original ISS agreements. • Purchase of Russian cargo delivery services will bridge the gap between Shuttle and the new US domestic cargo service providers. • Russian services are currently the only other proven upmass capability. • The Russian services that have been procured are the minimum needed for ISS survival; commercial services are projected to be required in 2010. • Once US commercial services are available, no other Russian cargo delivery services will be procured. ISS_CM_019 2
ISS Cargo Requirements Assessment • Initial Assessment of upmass requirements to support life of ISS has been performed. • Results indicated at least 48. 8 metric ton shortfall beyond capabilities of: • • Shuttle flyout (13+2+1) ATV offset (3. 4 of 5 flights will be US cargo) HTV offset (4. 3 of 7 flights will be US cargo) Russian procurement (4. 2 MT in ‘ 10 and 1. 4 MT in ‘ 11) • Absolute minimum needed to ensure ISS survival in event of COTS delay. • Remaining shortfall to be met by US commercial services: FY 08 Shortfall Requiring COTS: Purchase Mass w/1. 63 Packing Factor: FY 09 FY 10 FY 11 3. 0 4. 9 FY 12 5. 8 9. 5 10. 0 16. 3 FY 14 10. 0 16. 3 FY 15 TOTAL 10. 0 16. 3 48. 8 79. 6 • Refinement of cargo upmass requirements is ongoing. ISS_CM_019 3
ISSP Preparations for Commercial Services • Finalizing generic visiting vehicle interface requirements • Developing them for use during the COTS Phase I process • More than typical launch vehicle requirements—proximity operations, berthing, Station arm requirements, hatches, environment, etc • Continuing to evaluate future cargo requirements • Monitoring system performance (system hardware driver). • Monitoring crew usage (crew supplies driver). • Analyzing post Shuttle consumable requirements (water, gas, and propellant consumption). • Working with other government agencies who could use ISS as a national laboratory (e. g. , NIH). • Initiated planning for commercial cargo services procurement • Evaluating when’s the right time to begin formal procurement activities • Weighing different contract structures and configurations • Assessing demonstration criteria for launch services and ISS proximity operations ISS_CM_019 4
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