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The Prometheus rocket engine is an ongoing European Space Agency (ESA) development effort begun in 2017 to create a reusable methane-fueled rocket engine for use on the Themis reusable rocket demonstrator and Ariane Next, the successor to Ariane 6, and possibly a version of Ariane 6 itself.
Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio
The first ship of the class, Etna, measures 146.6 metres (481 ft 0 in) long overall with a beam of 21 m (68 ft 11 in) and a draught of 7.25 m (23 ft 9 in). The ship has a standard displacement of 5,980 tonnes (5,890 long tons) and a full load displacement of 13,400 t (13,200 long tons).
Methods of ignition include pyrotechnic, electrical (spark or hot wire), and chemical. Hypergolic propellants have the advantage of self igniting, reliably and with less chance of hard starts. In the 1940s, the Russians began to start engines with hypergols, to then switch over to the primary propellants after ignition.
Starting fluid is not recommended for regular use with some two-stroke engines because it does not possess lubricating qualities by itself. Lubrication for two-stroke engines is achieved using oil that is either mixed into the fuel by the user or injected automatically into the fuel supply; engines requiring premixed fuel that are run solely on starting fluid do not receive an adequate supply ...
[1] [non-primary source needed] Themis will be powered by the ESA's Prometheus rocket engine. [1] Two possible landing sites have been mentioned in discussions surrounding the project: [2] The former Diamant launch complex, which will be used for the flight testing phase; [3]
RS-68 being tested at NASA's Stennis Space Center Viking 5C rocket engine used on Ariane 1 through Ariane 4. A rocket engine is a reaction engine, producing thrust in accordance with Newton's third law by ejecting reaction mass rearward, usually a high-speed jet of high-temperature gas produced by the combustion of rocket propellants stored inside the rocket.
On January 2, 1959, as part of the Luna 8K72's Block-E stage, the engine RD-0105 finally performed its first successful mission, the launch of Luna 1. It was also the first deep space engine ignition, the first spacecraft to reach escape velocity and, while the spacecraft missed the Moon with which it was supposed to crash, it became the first ...