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S5.142

{{Infobox rocket engine

|name =S5.142

|image =

|image_size =

|caption =

|country_of_origin=Russia

|date =1990-1996

|first_date =1996-02-21 (Soyuz TM-23)

|last_date =

|designer =KB KhIMMASH

|manufacturer =

|purpose =attitude control thruster

|associated =

|predecessor =11D427M

|successor =

|status =Retired

|type =liquid

|fuel =UDMH

|oxidiser =N2O4

|mixture_ratio =1.85

|cycle =pressure fed

|pumps =

|description =

|combustion_chamber=1

|nozzle_ratio =45

|thrust =

|thrust_at_altitude=

|thrust(Vac) ={{convert|25|N|lbf|abbr=on}}

|thrust(SL) =

|thrust_to_weight=

|chamber_pressure={{convert|0.88|MPa|psi|abbr=on}}

|specific_impulse=

|specific_impulse_vacuum={{convert|285|isp|abbr=on}}

|specific_impulse_sea_level=

|total_impulse =

|burn_time =25,000 seconds

|restarts =300,000

|gimbal =

|capacity =

|dimensions =

|length ={{convert|180|mm|in|abbr=on}}

|diameter ={{convert|136|mm|in|abbr=on}}

|dry_weight ={{convert|0.9|kg|lb|abbr=on}}

|used_in =KTDU-80

|references =

|notes =

}}

The S5.142 (AKA DST-25) is a liquid pressure-fed rocket engine burning N2O4/UDMH with an O/F of 1.85. It is used for crew-rated spacecraft propulsion applications. It was used in KTDU-80 propulsion module from the Soyuz-TM to the Soyuz-TMA-M, as the low thrust thruster (DPO-M). As of the Soyuz MS, KTDU-80 does not use DPO-M anymore.

The S5.142 generates {{convert|25|N|lbf|abbr=on}} of thrust with a chamber pressure of {{convert|0.88|MPa|psi|abbr=on}} and a nozzle expansion of 45 that enables it to achieve a specific impulse of {{convert|285|isp|abbr=on}}. It is rated for 300,000 starts with a total firing time of 25,000 seconds and can do single burns from 0.03 seconds to 4,000 seconds. Each unit weights {{convert|0.9|kg|lb|abbr=on}}.

Versions

This engine has been used in crewed Russian space program since the Soyuz TM-23. There are two versions:

  • S5.142 (AKA DST-25): Version used as DPO-M (attitude control thrusters) on the KTDU-80 unit of the Soyuz-TM up to the Soyuz-TMA-M.
  • S5.142A: A version of the S5.142 adapted for the KVTK upper stage for the Angara rocket.

See also

References

{{Reflist|30em|refs=

{{cite web |url=http://www.k204.ru/books/Aviadvigatel2.pdf |title=Двигатели 1944-2000: Аавиационные, Ракетные, Морские, Промышленные |trans-title=Aviadvigatel 19442-2000: Aviation, rocketry, naval and industry |pages=75–81 |format=PDF |language=Russian |accessdate=2015-07-25}}

{{cite web |url=http://lpre.de/kbhm/index.htm |title=Основные двигатели разработки КБХМ |trans-title=The main engines produced by KbKhA |language=Russian |accessdate=2015-07-25}}

{{cite web |url=http://kbhmisaeva.ru/main.php?id=33 |title=ЖРДМТ от 0,5 кгс до 250 кгс |trans-title=Small thrust jet engine from 0.5 kgf to 250 kgf |publisher=KB KhIMMASH |language=Russian |url-status=dead

|archive-url=https://web.archive.org/web/20130423190227/http://kbhmisaeva.ru/main.php?id=33 |archive-date=23 April 2013}}

{{cite web |url=http://www.kosmonavtika.com/vaisseaux/soyouz/tech/kdu/kdu.html |title=Le système de propulsion du vaisseau Soyouz |trans-title=The propulsion system of the Soyuz spacecraft |first1=Nicolas |last1=Pillet |publisher=Kosmonavtika.com |language=French |accessdate=2015-07-14}}

{{cite book |url=http://forum.nasaspaceflight.com/index.php?topic=6832.msg115484 |title=Soyuz Crew Operations Manual (SoyCOM) (ROP-19) Final |date=June 1999 |chapter=3.17. Комбинированная Двигательная Установка (КДУ) (Combined Propulsion System) |pages=122–129 |author=RKK Energia |author-link=S.P. Korolev Rocket and Space Corporation Energia |name-list-style=amp |via=NASASpaceFlight.com |url-access=subscription }}

{{cite web |url=http://www.russianspaceweb.com/soyuz-ms-kdu.html |title=Propulsion system for the Soyuz MS spacecraft |last=Zak |first=Anatoly |publisher=Russian Space Web |date=2016-07-07 |access-date=2016-07-06}}

}}

External links

  • [http://kbhmisaeva.ru/main.php?id=53 KB KhIMMASH Official Page (in Russian)] {{Webarchive|url=https://web.archive.org/web/20130423190210/http://kbhmisaeva.ru/main.php?id=53 |date=2013-04-23 }}

{{Orbital spacecraft rocket engines}}

Category:Rocket engines of Russia

Category:Rocket engines using hypergolic propellant

Category:Rocket engines using the pressure-fed cycle

Category:KB KhimMash rocket engines

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