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S5.92

{{Short description|Russian upper stage rocket engine}}

{{Infobox rocket engine

|name = S5.92

|image = Russian thruster3.jpg

|image_size =

|caption =

|country_of_origin=USSR

|date =

|first_date =1988-07-07

|last_date =

|designer =KB KhIMMASH

|manufacturer =

|purpose =Upper Stage

|associated =Soyuz, Zenit

|predecessor =

|successor =

|status =In Production

|type =liquid

|fuel =UDMH

|oxidiser ={{N2O4}}

|mixture_ratio =2.0

|cycle =Gas Generator

|pumps =

|description =

|combustion_chamber=1

|nozzle_ratio =

|thrust =

|thrust_at_altitude=

|thrust(Vac) ={{convert|19.61|kN|lbf}}

|thrust(SL) =

|thrust_to_weight=

|chamber_pressure={{convert|9.61|MPa|psi}}

|specific_impulse=

|specific_impulse_vacuum=327 seconds

|specific_impulse_sea_level=

|total_impulse =

|burn_time =2,000 seconds

|capacity =

|dimensions =

|length ={{convert|1028|mm|in}}

|diameter ={{convert|838|mm|in}}(max)

|dry_weight ={{convert|75|kg|lb}}

|used_in =Fregat and Phobos program

|references =

|notes =

}}

The S5.92 is a Russian rocket engine, currently used on the Fregat upper stage. It burns a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer in the gas-generator cycle.

Design

The S5.92 has two throttle settings. The highest produces {{convert|19.61|kN|lbf}} of thrust, a specific impulse of 327 seconds, and a 3-second ignition transient. The lower throttle level produces {{convert|13.73|kN|lbf}} of thrust, specific impulse of 316 seconds, and a 2.5 second ignition transient. It is rated for 50 ignitions, and 300 days between ignitions.

History

It was originally designed by the famous A.M. Isayev Chemical Engineering Design Bureau, for the two spacecraft of the Phobos program. While the Mars missions were unsuccessful, the spacecraft manufacturer, NPO Lavochkin, found a market niche for the technology. Thus, the engine was adapted for use on the optional Fregat upper stage of the Soyuz and Zenit launch vehicles.

See also

  • Fregat - The upper stage that is powered by the S5.92.
  • Soyuz - A medium lift rocket that uses the Fregat stage.
  • Zenit-3F - A heavy lift rocket that uses the Fregat stage.

References

{{Reflist|30em|refs=

{{cite web |url=http://www.b14643.de/Spacerockets/Diverse/KB-Isayev_KDUs/index.htm |title=Spacecraft-propulsion blocks (KDU) from Isayev's design bureau (now Khimmash) |first=Norbert |last=Brügge |publisher=B14643.de |access-date=2015-06-02 |url-status=dead |archive-url=https://web.archive.org/web/20150602231608/http://www.b14643.de/Spacerockets/Diverse/KB-Isayev_KDUs/index.htm |archive-date=2015-06-02 }}

{{cite web |url=http://kbhmisaeva.ru/main.php?id=53 |publisher=KB Khimmash |title=Engines S5.221 and S5.92. The upper stage Fregat |language=ru

|url-status=dead |archive-url=https://web.archive.org/web/20130423190210/http://kbhmisaeva.ru/main.php?id=53 |archive-date=23 April 2013}}

{{cite web |url=http://www.k204.ru/books/vrd/wiki2/PDF/Himmash.pdf |title=KVD-1 & S5.92 Brochure |publisher=KB KhIMMASH |date=1998-10-13 |access-date=2015-08-03}}

{{cite web | url=http://www.russianspaceweb.com/fregat.html |title=Fregat space tug |publisher=RussianSpaceWeb |first=Anatoly |last=Zak |access-date=2015-06-02 }}

}}

External links

  • [http://kbhmisaeva.ru/main.php?id=53 KB KhIMMASH Official Page (in Russian)] {{Webarchive|url=https://web.archive.org/web/20160320132115/http://kbhmisaeva.ru/main.php?id=53 |date=2016-03-20 }}
  • [http://www.laspace.ru/rus/fregat.php NPO Lavochkin Fregat Page (in Russian)]

{{Rocket engines}}

{{Orbital spacecraft rocket engines}}

Category:Rocket engines of Russia

Category:Rocket engines of the Soviet Union

Category:Rocket engines using hypergolic propellant

Category:Rocket engines using the gas-generator cycle

Category:KB KhimMash rocket engines

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