Back Цягаўзброенасць Byelorussian Ràtio impuls-pes Catalan Schub-Gewicht-Verhältnis German Relación empuje a peso Spanish نسبت نیرو به وزن Persian Rapport poussée sur poids French יחס דחף-משקל HE Tolóerő-tömeg arány Hungarian Rasio dorong-berat ID 推力重量比 Japanese
Thrust-to-weight ratio is a dimensionless ratio of thrust to weight of a rocket, jet engine, propeller engine, or a vehicle propelled by such an engine that is an indicator of the performance of the engine or vehicle.
The instantaneous thrust-to-weight ratio of a vehicle varies continually during operation due to progressive consumption of fuel or propellant and in some cases a gravity gradient. The thrust-to-weight ratio based on initial thrust and weight is often published and used as a figure of merit for quantitative comparison of a vehicle's initial performance.