Engineering:Block E (rocket)
From HandWiki
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| Block E internal diagram | |
| Description | |
| Role | Propulsion Unit |
| Engines | RD-858 and RD-859 |
| Height | 1720 mm |
| Diameter | 2380 mm |
| Empty Mass | 525 kg |
| Fueled Mass | 2,950 kg |
Block E is the propulsion unit of Soviet lunar module LK, developed in 1960s by Yuzhnoye Design Bureau as a part of the manned lunar landing program. Block E was designed to soft land LK on the surface of the Moon after orbital velocity was cancelled by Block D and later to launch LK to the Moon orbit for the rendezvous with Soyuz 7K-LOK.[1][2]
Block E used RD-858, which has one nozzle and is deeply throttleable (from 2050 kg to 858 kg of thrust),[3] as the primary engine. The backup engine was RD-859, which has two nozzles. Engines were equipped with clam-shell doors to prevent damaging it while staying on the surface of the Moon. There were four additional vernier engines placed between main and backup engine nozzles.
References
- ↑ "LK spacecraft and Block E". Russianspaceweb.com. Archived from the original on 2013-12-30. https://web.archive.org/web/20131230033358/http://www.russianspaceweb.com/lk.html. Retrieved 2013-12-15.
- ↑ "Liquid propellant propulsion systems, Yuzhnoe Design Bureau". yuzhnoe.com. http://www.yuzhnoye.com/media/video/technique/Liquid-propellant-propulsion-systems.html. Retrieved 2014-07-10.
- ↑ "RD-858". Astronautix.com. Archived from the original on 2016-03-26. https://web.archive.org/web/20160326002726/http://astronautix.com/engines/rd858.htm. Retrieved 2016-03-18.
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