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{{for|the Greek island|Leros}}
{{for|the Greek island|Leros}}
'''LEROS''' is a family of chemical [[rocket engine]]s manufactured by [[Moog Inc.#Space and defense|Moog-ISP]] at [[RAF Westcott|Westcott, Buckinghamshire]], United Kingdom. LEROS engines have been used as primary [[Liquid Apogee Engine|apogee engines]] for telecommunications satellites such as the [[Lockheed Martin]] [[A2100]] <ref>[http://spaceflightnow.com/news/n0006/27arcengine/ Spaceflight Now - LEROS 1c First Firing]</ref> as well as deep space missions such as [[Juno (spacecraft)|Juno]].<ref>{{cite web|last1=Amos|first1=Jonathan|title=Juno Jupiter probe gets British boost|url=https://www.bbc.co.uk/news/science-environment-19477618|publisher=[[BBC News]]|accessdate=5 July 2016|date=4 September 2012}}</ref>
'''LEROS''' is a family of chemical [[rocket engine]]s manufactured by [[Nammo]]<ref>{{Cite web|url=http://www.mynewsdesk.com/no/nammo/pressreleases/nammo-acquires-moogs-european-in-space-propulsion-businesses-2010740|title=|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref> at [[RAF Westcott|Westcott, Buckinghamshire]], United Kingdom. LEROS engines have been used as primary [[Liquid Apogee Engine|apogee engines]] for telecommunications satellites such as the [[Lockheed Martin]] [[A2100]] <ref>[http://spaceflightnow.com/news/n0006/27arcengine/ Spaceflight Now - LEROS 1c First Firing]</ref> as well as deep space missions such as [[Juno (spacecraft)|Juno]].<ref>{{cite web|last1=Amos|first1=Jonathan|title=Juno Jupiter probe gets British boost|url=https://www.bbc.co.uk/news/science-environment-19477618|publisher=[[BBC News]]|accessdate=5 July 2016|date=4 September 2012}}</ref>


The family of engines derives from the LEROS 1 which was developed and qualified in the 1990s by [[Royal Ordnance]], later part of [[British Aerospace]]. The LEROS engines are made of [[niobium alloy]], which is traditionally used for [[liquid rocket]] engines such as the main engine of the [[Apollo Lunar Module]]. More than 70 LEROS 1 series engines have been delivered and have flown successfully.<ref>[http://www.prnewswire.com/news-releases/leros-engine-propels-the-juno-spacecraft-on-its-historic-voyage-to-jupiter-133466283.html PRNewswire LEROS History]</ref>
The family of engines derives from the LEROS 1 which was developed and qualified in the 1990s by [[Royal Ordnance]], later part of [[British Aerospace]]. The LEROS engines are made of [[niobium alloy]], which is traditionally used for [[liquid rocket]] engines such as the main engine of the [[Apollo Lunar Module]]. More than 70 LEROS 1 series engines have been delivered and have flown successfully.<ref>[http://www.prnewswire.com/news-releases/leros-engine-propels-the-juno-spacecraft-on-its-historic-voyage-to-jupiter-133466283.html PRNewswire LEROS History]</ref>

Revision as of 16:50, 26 June 2018

For the Greek island, see Leros.

LEROS is a family of chemical rocket engines manufactured by Nammo[1] at Westcott, Buckinghamshire, United Kingdom. LEROS engines have been used as primary apogee engines for telecommunications satellites such as the Lockheed Martin A2100 [2] as well as deep space missions such as Juno.[3]

The family of engines derives from the LEROS 1 which was developed and qualified in the 1990s by Royal Ordnance, later part of British Aerospace. The LEROS engines are made of niobium alloy, which is traditionally used for liquid rocket engines such as the main engine of the Apollo Lunar Module. More than 70 LEROS 1 series engines have been delivered and have flown successfully.[4]

Engine Propellant Thrust Isp Comments
LEROS 1c [5] Hydrazine / MON 460 N 325
LEROS 1b Hydrazine / MON 635 N 318
LEROS 2b MMH / MON 407 N 318
LEROS 4 (High Thrust Apogee Engine) MMH / MON 1100 N Under development for European Space Agency’s (ESA) Mars Robotic Exploration Program[6]

Uses

NASA's Juno spacecraft firing its LEROS 1b engine (computer-generated image)

LEROS engines have been used on a number of NASA and other space agency missions:

There have been helium check valves problems on Juno leading to postponed maneuvers, and a failure after the first burn on Intelsat 33e requiring backup low-thrust jets to be used to bring the satellite to its intended orbit.[13]

References

  1. ^ http://www.mynewsdesk.com/no/nammo/pressreleases/nammo-acquires-moogs-european-in-space-propulsion-businesses-2010740. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help); Missing or empty |title= (help)
  2. ^ Spaceflight Now - LEROS 1c First Firing
  3. ^ Amos, Jonathan (4 September 2012). "Juno Jupiter probe gets British boost". BBC News. Retrieved 5 July 2016.
  4. ^ PRNewswire LEROS History
  5. ^ Moog ISP Apogee/Upper Stage Thrusters Archived 2014-11-29 at the Wayback Machine
  6. ^ Werner, Debra (15 July 2013). "Moog Sees Higher-thrust Liquid Propellant Engine as Right Fit for Mars Missions". SpaceNews. Retrieved 5 July 2016.
  7. ^ Astronautix - Mars Global Surveyor Archived 2009-08-10 at the Wayback Machine
  8. ^ Spacenewsfeed - NASA Mercury Messenger Orbit Insertion
  9. ^ Spaceflight101 - Ariane 5 Flight VA206 Archived 2013-02-12 at the Wayback Machine
  10. ^ Astronautix - A2100 Platform Archived 2013-07-19 at the Wayback Machine
  11. ^ Skyrocket - SBIRS Geo 1
  12. ^ Spaceflight101 - Atlas V SBIRS Geo 2 Launch Archived 2014-09-13 at the Wayback Machine
  13. ^ a b Stephen Clark (30 January 2017). "Intelsat satellite in service after overcoming engine trouble". Spaceflight Now. Retrieved 31 January 2017.
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