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RD-58

RD-58M
Country of originUSSR
First flight1967
DesignerOKB-1, V. M. Melnikov
ManufacturerVoronezh Mechanical Plant
ApplicationUpper Stage
Associated LVN-1, Proton-K, Proton-M, Zenit
PredecessorS1.5400
StatusIn Production
Liquid-fuel engine
PropellantLOX / RP-1
CycleOxidizer Rich Staged Combustion
Configuration
Chamber1
Performance
Thrust, vacuum79.46 kilonewtons (17,860 lbf)
Specific impulse, vacuum353 s
Burn timeup to 600 s
Dimensions
Dry weight300 kilograms (660 lb)
Used in
Block D
References
References[1][2][3][4]

The RD-58 (manufacturer designation 11D58) is a rocket engine, developed in the 1960s by OKB-1, now RKK Energia. The project was managed by Mikhail Melnikov, and it was based on the previous S1.5400 which was the first staged combustion engine in the world.[1] The engine was initially created to power the Block D stage of the Soviet Union's abortive N-1 rocket.[5] Derivatives of this stage are now used as upper stages on some Proton and Zenit rockets.[6] An alternative version of the RD-58 chamber, featuring a shorter nozzle, was used as the N-1's roll-control engine.

The RD-58 uses LOX as the oxidizer and RG-1 as fuel in an oxidizer rich staged combustion cycle. It features a single gimbaled chamber, radial centrifugal pumps with auxiliary booster pumps, and an oxygen-rich preburner.[7] Recent modifications include a lightweight carbon-composite nozzle extender developed by NPO Iskra.[8][9][10]

The Buran spacecraft used two of an evolution of the RD-58M, called 17D12, as its main orbital correction engines. Instead of RG-1, it burned Syntin, and could be ignited 15 times.[11][12] It is assumed that it was the base for the RD-58S, which had practically the same specifications and powered the Blok DM-2M.[13] But the manufacturer states that the engine is compatible with both propellants.[1]

The current version of the engine is the RD-58M (manufacturer designation 11D58M), which has slightly reduced thrust, but increased isp. An even newer version is under development and is known as the RD-58MF (manufacturer designation 11D58MF). It will reduce thrust to 49.03 kilonewtons (11,020 lbf) to keep the same length but increase expansion ratio to 500:1. This will enable it to gain 20s of isp (to an expected 372s). It will eventually fly on the Blok DM-03.[14] This new version of the engine will be built in the Krasnoyarsk Machine-Building Plant.[15][16] During a November 2014 interview, Vladimir Kolmykov, the Deputy General Director of the Chemical Division of Krasnoyarsk Machine-Building Plant, stated that the production of Block-DM was suspended during that year, but work on the stage and development of the RD-58MF will resume during 2015.[17]

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  17. ^ Cite error: The named reference krasm-sineva201478 was invoked but never defined (see the help page).

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