Sierra Space · In Development · us · Cargo Spacecraft
Dream Chaser (Tenacity)
Reusable lifting-body spaceplane for ISS cargo; debut mission restructured to free-flyer demo in late 2026.
Verified 2026-09-24
Subsystems
propulsion↗
Sierra Space internally developed pressure-fed three-mode thrusters for orbital maneuvering.
avionics↗
Autonomous rendezvous GNC; designed for ISS proximity operations and free-flyer operations.
thermal↗
Lifting-body TPS designed for runway landing with up to 1.5 g reentry loads.
power↗
Solar arrays on Shooting Star cargo module wings; cargo module panels can supply up to 6 kW.
Specs & Metrics
- Cargo Upmass ↑ better
- 3,629 kg
- ~8,000 lb launch config; up to 5,216 kg (~11,500 lb) with Shooting Star module for full system
- Maximum pressurized + unpressurized cargo delivered to station orbit (upmass), in kg.
- Pressurized Volume ↑ better
- 33 m³
- Total pressurized volume including spaceplane + Shooting Star cargo module
- Total internal pressurized volume of the spacecraft in cubic metres.