RD-843
| Country of origin | Ukraine |
|---|---|
| First flight | 2012-02-13 |
| Designer | Yuzhnoye Design Bureau |
| Manufacturer | Yuzhmash |
| Application | Upper stage |
| AssociatedLV | Vega |
| Predecessor | RD-869 |
| Status | In production |
| Liquid-fuel engine | |
| Propellant | N2O4/UDMH |
| Mixture ratio | 2.0 |
| Cycle | Pressure fed |
| Configuration | |
| Chamber | 1 |
| Performance | |
| Thrust, vacuum | 2,452 newtons (551 lbf) |
| Chamberpressure | 2.04 MPa (296 psi) |
| Specific impulse,vacuum | 315.5 seconds |
| Burn time | Up to 667s |
| Dimensions | |
| Dry mass | 15.93 kilograms (35.1 lb) |
| Used in | |
| AVUM | |
| References | |
| References | [1][2][3][4] |
TheRD-843is aUkrainiansingle nozzleliquid propellant rocket engineburningpressure-fedUDMHandnitrogen tetroxide.It is rated for up to 5 restarts, and can gimbal up to 10 degrees in each direction.[2]
It was developed byYuzhnoye Design BureauforAvioand is manufactured byYuzhmash.It uses theRD-869thrust chamber, the old SovietICBMSS-18Satan final stage engine from which it is evolved, and which was also designed by Yuzhnoye. The RD-843 ground test campaign included 74 tests, 140 ignitions, reaching a total of 8201 s, which is approximately 12 service lives on 4 engines. As of June 2020 it has been successfully used on 14 orbital launches.[5]
It is currently used as the main engine ofVega'sAVUMupper stage.
See also[edit]
- AVUM- The upper stage of the Vega rocket that uses the RD-843 as its main engine.
- Vega- The ESA small rocket that uses AVUM.
- Yuzhnoe Design Bureau- The RD-843 designer bureau.
- Yuzhmash- A multi-product machine-building company that's closely related to Yuzhnoe and manufactures the RD-843.
References[edit]
- ^"Liquid rocket engine RD-843".Yuzhmash.Retrieved2015-05-29.
- ^ab"RD-843".Yuzhnoye. Archived fromthe originalon 2020-12-02.Retrieved2015-05-29.
- ^Degtyarev, Alexander; Kushnaryov, Alexander; Shulga, Vladimir; Ventskovsky, Oleg (2016-10-01). "Yuzhnoye's new liquid rocket engines as enablers for space exploration".Acta Astronautica.127:693–698.Bibcode:2016AcAau.127..693D.doi:10.1016/j.actaastro.2016.04.006.
- ^"RD-843".Defense Industry Of Ukraine Products And Services.Retrieved2016-07-11.
- ^"Vega".4 June 2020.
External links[edit]
- Yuzhnoye Design Bureau English-language home pageArchived2021-06-29 at theWayback Machine
- Yuzhmash Home Page
- Vega's User Manual
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