RD-8: Difference between revisions

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|image_size = 225
|image_size = 225
|caption = Photo of rocket engine ''RD-8''.
|caption = Photo of rocket engine ''RD-8''.
|country_of_origin = [[USSR]]/[[Russia]]
|country_of_origin = [[USSR]]/[[Ukraine]]
|date =
|date =
|manufacturer = [[Yuzhnoye Design Bureau]]
|manufacturer = [[Yuzhnoye Design Bureau]]

Revision as of 18:15, 10 May 2015

RD-8 (РД-8)
Country of originUSSR/Ukraine
ManufacturerYuzhnoye Design Bureau
ApplicationUpper stage vernier
StatusOperational
Liquid-fuel engine
PropellantLOX / rocket grade kerosene
Performance
Thrust, vacuum78.5 kilonewtons (17,600 lbf)[1]
Chamber pressure7.8 megapascals (1,130 psi)[1]
Specific impulse, vacuum342 seconds (3.35 km/s)
Dimensions
Dry weight380 kilograms (840 lb)
Used in
Zenit-2, Zenit-3SL upper stage

The RD-8 engine was developed by Yuzhnoye Design Bureau for the second stage of the Zenit rocket. It has four hinged chambers and a single turbopump unit. The fuel pair is LOX/kerosene. Vacuum thrust is 78.5 kN and its specific impulse in vacuum is 342 seconds (3.35 km/s).[2]

The engine was designed for long service life (up to 4000 seconds), high reliability, and is the first smaller upper stage engine to use the staged combustion cycle.[2]

References