Tyvak / Terran Orbital Excelsior
Tyvak (part of Terran Orbital/Lockheed)
Entry-level ESPA-class microsatellite bus enabling two spacecraft per single 15-inch ESPA port for efficient constellation build-out.
Technical specifications
- Configuration
- Half-ESPA
- Applications
- LEO
- Native Orbits
- 400km - 1200km
- Launch Mass (Wet, max)
- Up to 125kg
- Available Payload Mass
- 50kg
- Max Solar Array Power
- 500W (3rd-party solar array included)
- Redundancy
- Single-string
- Power System
- 66V system power; 28V, 12V, and 9V rails available
- Communication Data Rate
- S-band: 125 Kbps uplink, 2 Mbps downlink; X-band: 650 Mbps downlink
- Propulsion
- 400s ISP standard
- Pointing Accuracy
- 10 to 50 arcseconds, higher accuracy available
About
Excelsior shares a common EPS architecture with the larger spacecraft in the product line while providing redundancy in key components. The Excelsior allows maximum payload volume and a large solar array while providing low launch costs, giving it a power advantage over the nano platforms. It includes a propulsion bay accommodating electric propulsion, hydrazine, or a mix of propulsion systems.
Key benefits: build out constellations faster with the ability to launch two satellites per ESPA port; delivers a higher power-to-payload ratio than nano-class platforms; based on hardware with significant flight heritage.
Baseline modules included: Watchdog Backplane, Flight Computers (2), 66V Battery Modules (2-4), 66V MPPT (1-2), 66V Load Controller, 28V Low-power Point-of-Load (varies), 28V High-power Point-of-Load (varies), Coarse Sensors (2), Gyro Assembly, Star Trackers (3), GPS (2), Magnetorquers (3), Reaction Wheels (3), LDRR (2), MDR (2).
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
