Model of RD-0146
Country of originRussia
DesignerKBKhA Design Bureau
ManufacturerTsSKB Progress
Applicationengine for KVTK upper stage
Liquid-fuel engine
PropellantLOX / LH2
CycleExpander cycle
Thrust (vac.)68.6 kN (15,400 lbf)
Chamber pressure5.9 megapascals (860 psi)
Isp (vac.)470 seconds (4.6 km/s)
Length3.558 metres (11.67 ft)
Diameter1.95 metres (6 ft 5 in)

The RD-0146 is a Russian cryogenic rocket engine. The RD-0146 engine was developed by KBKhA design bureau in Voronezh, Russia, in cooperation with the American Pratt & Whitney Rocketdyne company. In 2009, it came into prominence, as Russian space agency chose it for the second-stage of the proposed Rus-M launch vehicle designed to carry the future Russian PPTS crewed spacecraft.[1][full citation needed] After the cancellation of Rus-M rocket, the RD-0146D variant was selected as the powerplant for the KVTK upper stage.


In 1999, Khrunichev requested KBKhA to develop RD-0146U version of the engine for Proton and Angara rockets. The development of the engine was partially financed by Pratt & Whitney Rocketdyne. Pratt & Whitney signed a preliminary marketing agreement on April 7, 2000 with Russia's Chemical Automatics Design Bureau giving Pratt & Whitney exclusive international marketing rights to the RD-0146.[1]


The RD-0146 is the first Russian rocket engine not to feature a gas generator and to be equipped with extendable nozzle extension without a cooling system. The engine is capable of five firings and thrust control in two planes. According to the developer, the lack of a gas generator system ensures higher reliability of the engine for multiple firings, by removing the potential of an ignition failure in the engine power cycle.[citation needed]

See also

Comparable engines


  1. ^ a b "RD-0146 rocket engine".

External links

  • KBKhA RD-0146
  • RD-0146 Specifications
  • RD-0146 description from Pratt & Whitney Rocketdyne [1]