National Security

Mission Systems for National Security Space

Sierra Space designs, integrates, and delivers spacecraft and mission systems for increasingly complex, contested, and high-consequence operating environments.

Sierra Space Eclipse™ Horizon spacecraft

Approach

From mission need to mission-ready capability

Space companies now have a profound responsibility to help lead the way in an entirely new era for National Security Space. Sierra Space brings spacecraft platforms, mission integration, enabling technologies, operations experience, and production infrastructure to that responsibility.

Architectures

Mission-tailored architectures

Sierra Space is developing a next-generation product line of small, high-performance satellites designed for on-orbit servicing missions. Missions begin with an operational requirement; platform, payload interfaces, subsystems, and mission support must fit that requirement. The Sierra Space Eclipse™ portfolio includes the Horizon, Velocity and Titan classes.

Configurable platforms
Spacecraft buses configured around the mission environment rather than a fixed product specification
Open payload interfaces
Payload accommodation designed to carry customer sensors and mission equipment
Multi-orbit support
Mission designs that address different orbital regimes and operating conditions
System integration
Spacecraft, subsystem and payload integration handled inside one engineering organization
Qualification
Environmental testing and mission assurance carried through to delivery
Pre-integration satellite structures inside Sierra Space Victory Works
Satellite structures in production, shown before integration.

Integration

Integration across the mission

An integrated approach provides continuity, with fewer handoffs between the spacecraft, the payload, and the operating environment.

  1. Step 1

    Architecture

    Mission need, orbit, payload and concept definition

  2. Step 2

    Configuration

    Platform, subsystem and interface selection

  3. Step 3

    Production

    Manufacturing and assembly of flight hardware

  4. Step 4

    Qualification

    Environmental test, verification and mission assurance

  5. Step 5

    Launch integration

    Vehicle accommodation and pre-flight support

  6. Step 6

    Operations

    Mission operations and on-orbit support

Resilience

Built for resilience

National security missions demand architectures that adapt as threats, timelines, and orbital conditions change.

Sierra Space Eclipse™ Velocity spacecraft configured for on-orbit maneuver

Platforms

Eclipse satellite platforms

Horizon, Velocity, and Titan address distinct mission needs across warning and tracking, space control, orbital mobility, and logistics. The family structure gives customers a configurable foundation that keeps the mission and the spacecraft together.

Enabling technologies

The systems beneath the mission

Spacecraft performance depends on the hardware underneath it. Sierra Space develops power, pointing, motion control, propulsion, thermal, environmental, mechanical, and life-support technologies for demanding applications.

VORTEX® VRM-1500-H engine on an instrumented test stand
VORTEX® VRM-1500-H engine on an instrumented test stand.

Questions

National Security FAQs

What national security space capabilities does Sierra Space provide?
Spacecraft platforms, mission integration, production, testing, mission operations and the enabling space technologies that support high-consequence national security missions.
Does Sierra Space support multi-orbit missions?
Yes. Sierra Space develops configurable spacecraft and supporting systems for missions across multiple orbital environments. The architecture and mission profile follow the customer requirement.
Can Sierra Space integrate customer payloads?
Yes. Payload accommodation and integration are part of mission-tailored spacecraft and mission planning. Program specifics are handled through direct engagement.

Program participation, contract detail, and mission specifics are handled through direct engagement with the Sierra Space national security team.