RD-107A in the context of "Soyuz-FG"

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⭐ Core Definition: RD-107A

The RD-107 (Russian: Ракетный Двигатель-107, romanized: Raketnyy Dvigatel-107, lit. 'Rocket Engine 107') and its sibling, the RD-108, are a type of rocket engine used on the R-7 rocket family. RD-107 engines are used in each booster and the RD-108 is used in the central core. The engines have four main combustion chambers (each with a nozzle) and either two (RD-107) or four (RD-108) vernier chambers.

The engines were first developed in the mid-1950s to launch the R-7 Semyorka, the first intercontinental ballistic missile. The R-7 was later adapted into space launch vehicles and the engines have been improved over several generations. The most recent versions are the RD-107A and RD-108A engines are used to launch the Soyuz-2, which is in active service as of 2024.

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👉 RD-107A in the context of Soyuz-FG

The Soyuz-FG was an improved variant of the Soyuz-U launch vehicle from the R-7 rocket family, developed by the Progress Rocket Space Centre in Samara, Russia. It featured upgraded first and second stage engines, RD-107A and RD-108A, respectively, with enhanced injector heads that improved combustion efficiency and specific impulse. The designation "FG" refers to forsunochnaya golovka (injector head) in Russian.

Soyuz-FG made its maiden flight on 20 May 2001, delivering a Progress cargo spacecraft to the International Space Station (ISS). It became the primary vehicle for launching crewed Soyuz TMA, Soyuz TMA-M, and Soyuz MS spacecraft from 2002 until its retirement in 2019.

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In this Dossier
LINKED FROM (PARENTS)
← Soyuz-FG
LINKS TO (CHILDREN)
Russian language → Romanization of Russian → Literal translation → Rocket engine → R-7 (rocket family) → Combustion chambers → Propelling nozzle → Vernier thruster → R-7 Semyorka → Intercontinental ballistic missile → Launch vehicle → Soyuz-2 →