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The thrust-to-Earth-weight ratio of a rocket or rocket-propelled vehicle is an indicator of its acceleration expressed in multiples of earth's gravitational acceleration, g 0. [5] The thrust-to-weight ratio of a rocket improves as the propellant is burned. With constant thrust, the maximum ratio (maximum acceleration of the vehicle) is achieved ...
Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio AJ-10-190 USA: Aerojet: Space Shuttle, Orion, Apollo CSM: Active Upper N 2 O 4 /MMH: Pressure-fed: 316 [1] 26,689 [1] 8.62 [1] 118 [1] 23.08: Archimedes New Zealand USA: Rocket Lab: Neutron: Development 1st, 2nd CH 4 / LOX: Staged, oxidizer-rich ...
Thrust Thrust-to-weight ratio (kg) (lb) (kN) (lbf) RD-0410 nuclear rocket engine [1] [2] 2,000 4,400 ... Merlin 1D rocket engine, full-thrust version 467 1,030 825
Thrust-to-weight ratio: Raptor 1: 88.94 Raptor 2: 141.1 Raptor 3: 183.6: ... but three of those were shut down before the rocket lifted off from the launch mount. The ...
To achieve this, the RS-68 has 80% fewer parts than the multi-launch RS-25 Space Shuttle Main Engine (SSME). [4] The adverse consequences of this simplicity were a significantly lower thrust-to-weight ratio and a 10% lower specific impulse compared to the SSME. The benefit of this simplicity is the RS-68's reduced construction cost. [4]
When selecting the ideal rocket engine to use as an initial stage for a launch vehicle, a useful performance metric to examine is the thrust-to-weight ratio, and is calculated by the equation: = The common thrust-to-weight ratio of a launch vehicle is within the range of 1.3 to 2.0. [3]
The NK-33 engine is renowned for its exceptional thrust-to-weight ratio, one of the highest among Earth-launchable rocket engines. It has been surpassed only in recent years by the RD-253 from NPO Energomash and the Merlin 1D and Raptor engines from SpaceX. The NK-43, a derivative optimized for upper-stage use, features a longer nozzle designed ...
The M-1 traces its history to US Air Force studies from the late 1950s for its launch needs in the 1960s. By 1961 these had evolved into the Space Launcher System design. . The SLS consisted of a series of four rocket designs, all built around a series of solid-fuel boosters and liquid-hydrogen-powered upper stag