Calculateur de Rapport Poussée/Poids — Formule
## Thrust-to-Weight Ratio
The TWR determines whether a vehicle can lift off and how quickly it accelerates.
### Formula
**TWR = F / (m * g)**
- *F* = engine thrust in newtons
- *m* = total vehicle mass
- *g* = local gravitational acceleration
TWR must exceed 1.0 for liftoff. Most launch vehicles aim for 1.2 to 1.8 at ignition.
The TWR determines whether a vehicle can lift off and how quickly it accelerates.
### Formula
**TWR = F / (m * g)**
- *F* = engine thrust in newtons
- *m* = total vehicle mass
- *g* = local gravitational acceleration
TWR must exceed 1.0 for liftoff. Most launch vehicles aim for 1.2 to 1.8 at ignition.
Exemple Résolu
Saturn V first stage: 7 607 000 N thrust, 549 054 kg.
- TWR = F / (m * g)
- Weight = 549054 * 9.80665 = 5 384 000 N
- TWR = 7607000 / 5384000
- TWR = 1.413