Fregat
Sign in to saveFregat () is an upper stage developed by NPO Lavochkin for universal compatibility with a wide range of medium- and heavy-lift launch vehicles. Fregat has been used primarily with Soyuz and on a few occasions with Zenit rockets, and entered operational service in February 2000.
Key facts
- Rocket stage.name
- Fregat
- Rocket stage.image
- MAKS Airshow 2013 (Ramenskoye Airport, Russia) (525-13).jpg
- Rocket stage.caption
- Model of Fregat at MAKS Airshow, 2013
- Rocket stage.manufacturer
- NPO Lavochkin
- Rocket stage.country
- Russia
- Rocket stage.rockets
- Current: Retired: , , ,
- Rocket stage.status
- Active
- Rocket stage.launches
- 114
- Rocket stage.success
- 111
- Rocket stage.fail
- 2
- Rocket stage.other_outcome
- 1 (partial failure)
- Rocket stage.first
- 2 February 2000
- Rocket/stage.name
- General characteristics
- Rocket/stage.engines
- 1×S5.92
- Rocket/stage.thrust
- High: Low:
- Rocket/stage.SI
- High: Low:
- Rocket/stage.burntime
- Up to 1,350 seconds (up to 7 starts)
- Rocket/stage.fuel
- /UDMH
via Wikipedia infobox
Wikidata facts
- Image
- Phobos Grunt base section model.jpg
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- Commons category
- Fregat
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Article
13 sectionsContents
- Description
- Fregat upper stage launches
- Failures
- August 2014 failure
- July 2017 partial failure
- November 2017 failure
- Orbital debris
- Versions
- Fregat-M/Fregat-MT
- Fregat-SB
- All versions data
- References
- External links
Fregat () is an upper stage developed by NPO Lavochkin for universal compatibility with a wide range of medium- and heavy-lift launch vehicles. Fregat has been used primarily with Soyuz and on a few occasions with Zenit rockets, and entered operational service in February 2000.
Fregat uses a liquid-propellant engine burning unsymmetrical dimethylhydrazine (UDMH) fuel and dinitrogen tetroxide () oxidizer, a pair of hypergolic propellants that ignite on contact. With a success rate of 97.3%, including two failures and one partial failure, Fregat is among the most reliable upper stages in operation. It has deployed more than 300 payloads into a variety of orbits and is capable of placing three or more spacecraft into distinct orbits during a single mission, owing to its ability to restart up to seven times and operate for a total burn duration of up to 1,350 seconds.