Satellites

The SN-50 ESPA class commodity buses are the baseline for purpose-built LEO/GEO Spacecraft using modular mission payloads. Sierra Space offers microsat capability with its SN-50 ESPA class LEO/GEO spacecraft platform. This product is ideal for flying smaller payloads and hosting technical demonstration missions.

Features:

• Fully ESPA – compatible
• Adaptable to all LEO orbits/inclinations
• Reconfigurable payload accommodation interfaces
• Robust multi-tiered fault protection system
• Green propulsion capability
• Optional GEO version supports payloads up to 65 kg with high delta-V choices

The SN-100 ESPA Grande class commodity buses are the baseline for purpose-built LEO/GEO Spacecraft using modular mission payloads. The SN-100 design-for-manufacturing enables large-scale productions and increased flexibility for missions with payloads up to 150 kg.

Features:

• 3-5-year mission life with end of mission (EOM) disposal
• Common bus provides the building blocks for multiple missions and growing adversarial threat solutions
• Support payloads up to 150 kg with optional high-power versions for peak power needs
• Configurable communications packages, OSILs in/cross plane, uplink/downlink, and Link 16 supporting secure mesh networking
• Standard pointing is better than 10 arcsec knowledge, 3σ
• Flexible payload accommodation capability
• 3-axis reaction wheel control
• Optional proximity operations sensor suite and high thrust divert thrusters

The SN-200 ESPA Grande class commodity buses are the baseline for purpose-built LEO/MEO/GEO spacecraft using modular mission payloads.

Features:

• Supports payloads up to 500 kg
• 5-7-year life with EOM disposal
• >1,500 W power generation
• Standard pointing performance better than 10 arcsec knowledge, 3σ
• 3-axis reaction wheel control, optional high thrust divert thrusters
• Partial or full redundancy with optional proximity operations sensor suite
• Very high delta-V capability, >2,000 m/s with 200 kg payload

The SN-1000 LDPE class platform can host six rideshare payloads and adds an auxiliary platform for on-orbit demo payload assets in either MEO or GEO orbits. The SN-1000 spacecraft features support refueling operations, rideshare missions, GTO to GEO transfer, multi-rendezvous and cislunar applications.

Features:

• Integration standardization support the maximum flexibility for late manifest and port allocation decisions
• Advance rideshare capabilities on future LDPE flights
• Simplify payload integration, extend mission life, and add additional integrated payload capability that allow new LDPE missions such as on-orbit test range activities, while preserving the baseline six-port rideshare mission
• Expand core capabilities provide improved propulsion delta-V and provide a new re-docking capability
• Increased redundancy can optionally extend life beyond 5-year requirements
• Design includes command, telemetry, and power services to all six payload ports