MASS
5 kg
POWER
50 W
REDUNDANCY
Triple modular redundancy (vote-based)
RAD HARDENED
No — COTS with software fault tolerance
FIRST USE
May 2012
Dragon Flight Computer is a flight computer system manufactured by SpaceX. It features triple modular redundancy (vote-based) redundancy.
ABOUT DRAGON FLIGHT COMPUTER
The SpaceX Dragon flight computer uses a triple-redundant architecture running Linux on x86 processors. Commercial off-the-shelf hardware is combined with software-based fault tolerance to achieve crewed-rated reliability. This approach dramatically reduced cost compared to traditional rad-hardened designs.
OPERATING PRINCIPLE
Three independent x86 processors running Linux; majority-vote logic for all critical commands
VEHICLES USING THIS SYSTEM
Dragon 2 CrewDragon 2 Cargo
SPECIFICATIONS
| CATEGORY | Flight Computer |
| TYPE | Triple-Redundant Linux SBC |
| MANUFACTURER | SpaceX |
| MASS | 5 kg |
| POWER CONSUMPTION | 50 W |
| REDUNDANCY | Triple modular redundancy (vote-based) |
| RADIATION HARDENED | No — COTS with software fault tolerance |
| ACCURACY | N/A |
| FIRST USE | May 22, 2012 |
| STATUS | Active |
DETAILED SPECS
| OS | Linux |
| ARCHITECTURE | x86 |
| REDUNDANCY_MODE | Triple-vote |
| CREW_RATED | Yes |
