November 2023

Suborbital rockets are designed to reach altitudes above the Earth’s atmosphere but not to achieve orbital velocity. They are typically used for scientific research, testing, or commercial purposes such as space tourism. The efficiency of a specific suborbital rocket can be influenced by design parameters, operating conditions, and other factors. The propulsive efficiency is a […]

Liquid Fly-back Booster (LFBB) was a German Aerospace Center’s (DLR’s) project concept to develop a liquid rocket booster capable of reusing for Ariane 1 in order to significantly reduce the high cost of space transportation and increase environmental friendliness.  The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy into useful thrust.

A single-stage-to-orbit (SSTO) vehicle reaches orbit from the surface of a body using only propellants and fluids and without expending tanks, engines, or other major hardware. The term usually, but not exclusively, refers to reusable vehicles. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy into useful

The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is a type of electric propulsion system for spacecraft. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy into useful thrust. Practical rocket engines often have propulsive efficiencies less than 100% due to factors like

The propulsive efficiency of a rocket engine is a measure of how effectively the engine converts the chemical energy stored in the propellants into kinetic energy of the exhaust gases, which produces thrust. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy

A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel and oxidizer; that is, both its fuel and oxidizer are gases which have been liquefied and are stored at very low temperatures. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy into useful thrust. Practical rocket engines often have propulsive efficiencies

The Raptor is a family of full-flow staged-combustion-cycle rocket engines developed and manufactured by SpaceX for use on the SpaceX Starship. The engine is powered by cryogenic liquid methane and liquid oxygen (“methalox”), as opposed to the RP-1 and liquid oxygen (“kerolox”) combination used in SpaceX’s earlier Merlin and Kestrel rocket engines. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy

A pulse detonation engine (PDE) is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. The engine is pulsed because the mixture must be renewed in the combustion chamber between each detonation wave and the next. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy into useful thrust.

The propulsive efficiency of a rocket engine is a measure of how effectively the engine converts the chemical energy stored in the propellants into kinetic energy of the exhaust gases, which produces thrust. The propulsive efficiency is a crucial parameter in evaluating the performance of a rocket engine, indicating how well it converts propellant energy

The AJ10 rocket engine is a liquid rocket engine that has been used on various launch vehicles, including upper stages of rockets. It’s important to note that specific details such as the heating value of the propellant, mass flow rates, and specific impulse values would need to be obtained from engine performance data or technical