RD-843

Last updated
RD-843 (РД-843)
Country of origin Ukraine
First flight2012-02-13
Designer Yuzhnoye Design Bureau
Manufacturer Yuzhmash
ApplicationUpper stage
Associated LV Vega
Predecessor RD-869
StatusIn production
Liquid-fuel engine
PropellantN2O4 / UDMH
Configuration
Chamber1
Performance
Thrust, vacuum2,452 newtons (551 lbf)
Chamber pressure 2.04 MPa (296 psi)
Specific impulse, vacuum315.5 seconds
Burn timeUp to 667s
Dimensions
Dry weight15.93 kilograms (35.1 lb)
Used in
AVUM
References
References [1] [2] [3] [4]

The RD-843 is a Ukrainian single nozzle liquid propellant rocket engine burning pressure-fed UDMH and nitrogen tetroxide. It is rated for up to 5 restarts, and can gimbal up to 10 degrees in each direction. [2]

Contents

It was developed by Yuzhnoye Design Bureau for Avio and is manufactured by Yuzhmash. It uses the RD-869 thrust chamber, the old Soviet ICBM SS-18 Satan 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 of Vega's AVUM upper stage.

See also

Related Research Articles

<span class="mw-page-title-main">Vega (rocket)</span> European Space Agency launch system

Vega is an expendable launch system in use by Arianespace jointly developed by the Italian Space Agency (ASI) and the European Space Agency (ESA). Development began in 1998 and the first launch took place from the Centre Spatial Guyanais on 13 February 2012.

<span class="mw-page-title-main">Zenit (rocket family)</span> Soviet (now Ukrainian) RP-1/LOX fueled rocket, for satellite launch

Zenit is a family of space launch vehicles designed by the Yuzhnoye Design Bureau in Dnipro, Ukraine, which was then part of the Soviet Union. Zenit was originally built in the 1980s for two purposes: as a liquid rocket booster for the Energia rocket and, equipped with a second stage, as a stand-alone middle-weight launcher with a payload greater than the 7 tonnes of the Soyuz but smaller than the 20 tonnes payload of the Proton. The last rocket family developed in the USSR, the Zenit was intended as an eventual replacement for the dated Soyuz and Proton families, and it would employ propellants which were safer and less toxic than the Proton's nitrogen tetroxide/UDMH mix. Zenit was planned to take over crewed spaceship launches from Soyuz, but these plans were abandoned after the dissolution of the Soviet Union in 1991.

<span class="mw-page-title-main">Angara (rocket family)</span> Russian family of space launch vehicles

The Angara rocket family is a family of launch vehicles being developed by the Moscow-based Khrunichev State Research and Production Space Center. The launch vehicles are to put between 3,800 kg (8,400 lb) and 24,500 kg (54,000 lb) into low Earth orbit and are intended, along with Soyuz-2 variants, to replace several existing launch vehicles.

<span class="mw-page-title-main">State Space Agency of Ukraine</span> Ukrainian government agency

The State Space Agency of Ukraine is the Ukrainian government agency responsible for space policy and programs. Along with the Ukrainian Defense Industry and the Antonov Aeronautical Scientific-Technical Complex, it is a major state complex of the national defense industry of Ukraine.The agency was formed in 1992 based on the Soviet space program infrastructure remaining in Ukraine following the dissolution of the Soviet Union.

<span class="mw-page-title-main">PA Pivdenmash</span> Ukrainian rocket manufacturer

Pivdenmash, formerly known as Yuzhmash, meaning Southern Engineering, is a Ukrainian state-owned aerospace manufacturer. It was formerly a Soviet state-owned factory prior to 1991.

<span class="mw-page-title-main">NK-33</span> Soviet rocket engine

The NK-33 and NK-43 are rocket engines designed and built in the late 1960s and early 1970s by the Kuznetsov Design Bureau. The NK designation is derived from the initials of chief designer Nikolay Kuznetsov. The NK-33 was among the most powerful LOX/RP-1 rocket engines when it was built, with a high specific impulse and low structural mass. They were intended for the ill-fated Soviet N1F Moon rocket, which was an upgraded version of the N1. The NK-33A rocket engine is now used on the first stage of the Soyuz-2-1v launch vehicle. When the supply of the NK-33 engines are exhausted, Russia will supply the new RD-193 rocket engine. It used to be the first stage engines of the Antares 100 rocket series, although those engines are rebranded the AJ-26 and the newer Antares 200 and Antares 200+ rocket series uses the RD-181 for the first stage engines, which is a modified RD-191, but shares some properties like a single combustion chamber unlike the two combustion chambers used in the RD-180 of the Atlas V and the four combustion chambers used in the RD-170 of the Energia and Zenit rocket families, and the RD-107, RD-108, RD-117, and RD-118 rocket engines used on all of the variants of the Soyuz rocket.

The RD-8 is a Soviet / Ukrainian liquid propellant rocket engine burning LOX and RG-1 in an oxidizer rich staged combustion cycle. It has a four combustion chambers that provide thrust vector control by gimbaling each of the nozzles in a single axis ±33°. It was designed in Dnipropetrovsk by the Yuzhnoye Design Bureau as the vernier thruster of the Zenit second stage. As such, it has always been paired with the RD-120 engine for main propulsion.

The RD-120 is a liquid upper stage rocket engine burning RG-1 and LOX in an oxidizer rich staged combustion cycle with an O/F ratio of 2.6. It is used in the second stage of the Zenit family of launch vehicles. It has a single, fixed combustion chamber and thus on the Zenit it is paired with the RD-8 vernier engine. The engine was developed from 1976 to 1985 by NPO Energomash with V.P. Radovsky leading the development. It is manufactured by, among others, Yuzhmash in Ukraine.

This page is an incomplete list of orbital rocket engine data and specifications.

<span class="mw-page-title-main">SCE-200</span> Indian semi-cryogenic rocket engine

The SCE-200 is a 2 MN thrust class liquid rocket engine, being developed to power ISRO's existing LVM3 and upcoming heavy and super heavy-lift launch vehicles. It is being developed by Liquid Propulsion Systems Centre (LPSC) of ISRO and is expected to have first flight in 2020s.

The RD-810 (РД-810) is a Ukrainian liquid propellant rocket engine burning LOX and Kerosene (RG-1) in a staged combustion cycle. It has a single combustion chamber that provides thrust vector control by gimbaling of the nozzle in two axis by +/- 8°. It is being designed in Ukraine by Yuzhnoye Design Bureau for the prospective first stage propulsion of the Mayak rocket family.

The Soyuz-7 or Amur is a partially-reusable, methane–fueled, orbital launch vehicle currently in the design concept stage of development by the Roscosmos State Corporation in Russia. Design began by 2020, with operational flights planned for no earlier than 2028. Amur is intended to substitute for the existing Soyuz-2, at a much lower per launch cost.

The RD-861 is a Soviet liquid propellant rocket engine burning UDMH and nitrogen tetroxide in a gas generator combustion cycle. It has a main combustion chamber, with four vernier nozzles fed by the gas generator output. It can be reignited a single time.

The RD-855 (GRAU Index 8D68M]), also known as the RD-68M, is a liquid-fueled rocket engine with four nozzles. As a vernier engine, it provides fine steering adjustments for rockets. It is powered by a combination of N2O4, an oxidizer, and UDMH, a propellant. This combination is hypergolic, meaning the two substances ignite on contact, eliminating the need for an external ignition source.

The RD-856 (GRAU Index 8D69M), also known as the RD-69M, is a four-nozzle liquid-fuel rocket vernier engine, burning N2O4 and UDMH in a gas generator cycle. It was used on the R-36, Tsyklon-2 and Tsyklon-3 second stage as thrust vector control by gimbaling of its nozzle. The engine is distributed through a cylindrical structure that is integrated around the main engine RD-252 module. The structure includes aerodynamic protection for the nozzles. The engine was started by a pyrotechnic ignitor.

The RD-864 is a Soviet liquid propellant rocket engine burning UDMH and nitrogen tetroxide in a gas generator combustion cycle. It has a four combustion chambers that provide thrust vector control by gimbaling each nozzle in a single axis ±55°. It is used on the third stage of the R-36M UTTKh and Dnepr. For the R-36M2, an improved version, the RD-869 was developed.

The RD-801 is a Ukrainian liquid propellant rocket engine burning LOX and Kerosene (RG-1) in a staged combustion cycle. It has a single combustion chamber that provides thrust vector control by gimbaling of the nozzle in two axis by +/- 6°. It is being designed in Ukraine by Yuzhnoye Design Bureau for the prospective first stage propulsion of the Mayak rocket family.

<span class="mw-page-title-main">Cyclone-4M</span> Ukrainian small-lift rocket

The Cyclone-4M is a Ukrainian carrier rocket which is being developed for commercial satellite launches.

<span class="mw-page-title-main">Blok E</span>

Blok E is the propulsion unit of Soviet lunar module LK, developed in the 1960s by Yuzhnoye Design Bureau as a part of the human lunar landing program.

<span class="mw-page-title-main">M10 (rocket engine)</span>

M10 is a liquid-fuel upper-stage rocket engine in development by Avio on behalf of European Space Agency for use on Vega E. The engine, initially known as LM10-MIRA, was a derivation of the existing Russian RD-0146 engine and result of a past collaboration between Avio and Chemical Automatics Design Bureau (KBKhA) ended in 2014 after the escalation of the Russo-Ukrainian conflict and consequent economic sanctions. On May 6, 2022 engine testing campaign started at Salto di Quirra, Sardinia, with consequent maiden flight on a Vega-E launcher expected by 2026 from Guiana Space Centre.

References

  1. "Liquid rocket engine RD-843". Yuzhmash. Retrieved 2015-05-29.
  2. 1 2 "RD-843". Yuzhnoye. Archived from the original on 2020-12-02. Retrieved 2015-05-29.
  3. 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.
  4. "RD-843". Defense Industry Of Ukraine Products And Services. Retrieved 2016-07-11.
  5. "Vega". 4 June 2020.