One Platform.
Three Sizes.
Sentinel is a single satellite bus architecture that scales from a 180kg technology demonstrator to a 2,400kg national-security-class GEO platform, all built on the same production line in Denver.
Sentinel-S
~180 kgSentinel-M
~650 kgSentinel-L
~2,400 kgSentinel-S
| Mass | ~180 kg |
| Power (Deployed) | 1.2 kW |
| Design Life | 3–5 yrs |
| Primary Use | Tech Demo, Tactical |
Sentinel-M
| Mass | ~650 kg |
| Power (Deployed) | 4.5 kW |
| Design Life | 7–10 yrs |
| Primary Use | Earth Observation, Comms |
Sentinel-L
| Mass | ~2,400 kg |
| Power (Deployed) | 18 kW |
| Design Life | 12–15 yrs |
| Primary Use | GEO Comms, Missile Warning |
Manufacturing Capability
All four disciplines under one roof at the Denver Satellite Works.
Structures
Composite and machined-metal bus structures, built and load-tested in-house.
Avionics & Flight Software
Flight computers, power systems, and software written and validated on the same bench they fly on.
Propulsion Integration
Electric and chemical propulsion module integration for station-keeping and orbit-raising.
Environmental Test
Thermal vacuum, vibration, and acoustic test chambers covering the full Sentinel mass range.
Applications
Earth Observation
High-revisit optical and multispectral imaging for agriculture, infrastructure, and environmental monitoring.
Secure Comms
Encrypted, anti-jam communications payloads for government and defense customers.
Space Domain Awareness
Tracking and characterization sensors for monitoring the orbital environment.
Missile Warning & Tracking
Wide-field infrared sensing for early detection and tracking of ballistic and hypersonic threats.
Scientific Missions
Custom instrument hosting for research institutions and civil space agencies.
Built On Your Timeline,
Not Ours
Tell us your mission requirements and we'll tell you which Sentinel platform — and which launch vehicle — fits.