The RD-253 (Russian: Ракетный Двигатель-253 (РД-253), romanized: Raketnyy Dvigatel-253, lit. 'Rocket Engine-253') and its later variants, the RD-275 and...

protection. Rocket engine Staged combustion cycle RD-253 engine for "Universal Rocket" family. RD-170 comparable Russian RP-1/LOX engine with four combustion...

for the unsuccessful Lunar N1 rocket. The non-cryogenic N2O4/UDMH engine RD-253 using staged combustion was developed by Valentin Glushko circa 1963 for...

of development later led to the highly successful UDMH/N2O4 engines RD-253 and RD-275 used on the Proton launch vehicles – these were the most powerful...

were designed to use the RD-253 as their main engine. In late 1962 it was suggested that the rocket switch to the more powerful RD-270. While this was never...

integrity until separation. The first stage used six RD-253 engines, designed by Valentin Glushko. The RD-253 is a single-chamber engine and uses a staged combustion...

R-12 and Kosmos-2. RD-253 a liquid rocket engine, burning UDMH/N2O4 that powers the Proton first stage. RD-275 an improved RD-253. Ural-2500 gas-turbine...

2017. "RD-270 (8D420)". NPO Energomash. Retrieved February 6, 2023. "RD-253 and RD-275". NPO Energomash. Archived from the original on April 5, 2015. Retrieved...

thrust-to-weight ratio of any Earth-launchable rocket engine; only the NPO Energomash RD-253, SpaceX Merlin 1D, and SpaceX Raptor engines achieve a higher ratio. The...

The RD-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...