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SPRSA Excess Capacity Panel Carol P. Welsch Orbital Sciences Corporation June 10, 2014. Over 800 Space Missions Since 1982*. 77 Commercial Satellites. 72 Government Satellites. 40 Space Payloads . 77 Space Launch Vehicles. 201 Interceptor & Target Vehicles . 340 Sounding Rockets .
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SPRSAExcess Capacity PanelCarol P. WelschOrbital Sciences CorporationJune 10, 2014 Welsch June2014
Over 800 Space Missions Since 1982* 77 Commercial Satellites 72 Government Satellites 40 Space Payloads 77 Space Launch Vehicles 201 Interceptor & Target Vehicles 340 Sounding Rockets *April 1982-March 2014
Rendezvous with ISS • Hosted payload inactive • Survival heater power provided Depart from ISS • Hosted Payload Mission • Up to1 year duration • Data downlink via USN • +X pointed at Sun, excursions supported • Data delivered to science team USN Ground Stations Payload Ops Center Launchfrom Wallops Controlled Deorbit Orbital MCC Hosted Payloads on ISS Resupply Missions • Complete End-to-end Mission Service: I&T, Flight Operations, Data Delivery • Hosted on Cygnus spacecraft • Three Successful Cygnus Flights to Date • Up to 1 Year Lifetime • 18-24 Month ATP-to-Launch Schedules • Payload Mass up to 100 kg • Payload Power up to 500 W (OAP) • Payload Volume up to 1 m3 • Downlink Data Rates up to 3.5 mbps • Pointing Control 0.1° • 51.6º Orbit Between 200 and 400 km 4
Addressing the Challenges • “What is the most politically acceptable, efficient, and cost effective approach to accessing excess launch capacity?” • No single approach meets every user needs • Steps could be taken to improve efficiency and cost effectiveness of rideshare • Need to reconcile lengthy gov’t launch planning timelines with smallsat timelines • Develop flexible, standardized interfaces and adapters (eg. EAGLE) • Fully utilize DoD Space Test Program to identify rideshare opportunities for all users • Should be on a regular and recurring basis • Make community aware of opportunities • Develop policy to enable commercial payloads to rideshare on gov’t launches • Implement contracting mechanism to procure commercial rideshare services Welsch June2014