Complete specifications for the Falcon 9 v1.2 Full Thrust (Block 5).
Vehicle Overview¶
| Property | Value |
|---|---|
| Manufacturer | SpaceX |
| Variant | v1.2 Full Thrust |
| First Flight | 2015-12-22 |
| Height | 70 m |
| Diameter | 3.7 m |
| Mass (at liftoff) | 549,054 kg |
Stage 1¶
| Property | Value |
|---|---|
| Engines | 9× Merlin 1D |
| Thrust (sea level) | 7,686 kN |
| Thrust (vacuum) | 8,227 kN |
| Specific Impulse (SL) | 282 s |
| Specific Impulse (vac) | 311 s |
| Burn Time | ~162 s |
| Propellant | RP-1 / LOX |
| Dry Mass | 22,000 kg |
| Propellant Mass | ~411,000 kg |
Stage 2¶
| Property | Value |
|---|---|
| Engines | 1× Merlin 1D Vacuum |
| Thrust | 981 kN |
| Specific Impulse | 348 s |
| Burn Time | 397 s (max) |
| Propellant | RP-1 / LOX |
| Dry Mass | 4,000 kg |
| Propellant Mass | ~107,000 kg |
Other Components¶
| Component | Mass |
|---|---|
| Interstage | 2,000 kg |
| Payload Fairing | ~2,000 kg |
Payload Capacity¶
| Orbit | Capacity |
|---|---|
| LEO (185 km) | 22,800 kg |
| GTO | 8,300 kg |
| Mars | 4,020 kg |
Aerodynamics¶
| Property | Value |
|---|---|
| Diameter | 3.7 m |
| Reference Area | 10.75 m² |
| \(C_D\) (subsonic) | ~0.3 |
| \(C_D\) (supersonic) | ~0.35 |
Implementation¶
@dataclass(frozen=True)
class Falcon9Params:
m0: float = 549_054.0 # Gross liftoff mass [kg]
thrust1: float = 7_686_000.0 # Stage 1 thrust [N]
thrust2: float = 981_000.0 # Stage 2 thrust [N]
isp1: float = 282.0 # Stage 1 Isp [s]
isp2: float = 348.0 # Stage 2 Isp [s]
t2_burn: float = 397.0 # Stage 2 burn time [s]
m1_dry: float = 22_000.0 # Stage 1 dry mass [kg]
m2_dry: float = 4_000.0 # Stage 2 dry mass [kg]
interstage: float = 2_000.0 # Interstage mass [kg]
diameter: float = 3.7 # Vehicle diameter [m]References¶
- SpaceX Falcon 9 User's Guide (2021)
- Spaceflight101: Falcon 9 Vehicle Overview
- NASA Space Launch Report: Falcon 9 Data Sheet