About: S5.4

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The S5.4 (AKA TDU-1, GRAU Index 8D66), was a Russian liquid rocket engine burning TG-02 and AK20F in the gas generator cycle. It was originally used as the braking (deorbit) engine of the Vostok, Voskhod, and Zenit spacecraft, which later switched to solid engines. The engine produced 15.83 kilonewtons (3,560 lbf) of thrust with a specific impulse of 266 seconds in vacuum, and burned for 45 seconds, enough for the deorbit. It had a main fixed combustion chamber and four small verniers to supply vector control. It was housed in the service module and had two toroidal tanks for pressurization.

Attributes	Values
rdfs:label	S5.4 (en) S5.4 (pt)
rdfs:comment	O S5.4 (designado pelo fabricante como 8D66), também conhecido como TDU-1, foi um motor de foguete a combustível líquido que usava e AK20F num ciclo de geração de gás. Ele foi originalmente usado como motor de frenagem (saída de órbita) das espaçonaves: Vostok, Voskhod e Zenit. (pt) The S5.4 (AKA TDU-1, GRAU Index 8D66), was a Russian liquid rocket engine burning TG-02 and AK20F in the gas generator cycle. It was originally used as the braking (deorbit) engine of the Vostok, Voskhod, and Zenit spacecraft, which later switched to solid engines. The engine produced 15.83 kilonewtons (3,560 lbf) of thrust with a specific impulse of 266 seconds in vacuum, and burned for 45 seconds, enough for the deorbit. It had a main fixed combustion chamber and four small verniers to supply vector control. It was housed in the service module and had two toroidal tanks for pressurization. (en)
foaf:homepage	https://web.archive.org/web/20130423190210/http:/kbhmisaeva.ru/main.php%3Fid=53
name	S5.4 (en)
foaf:depiction
dcterms:subject	Rocket engines of Russia Rocket engines of the Soviet Union Rocket engines using hypergolic propellant
Wikipage page ID	47346791 (xsd:integer)
Wikipage revision ID	1101109665 (xsd:integer)
Link from a Wikipage to another Wikipage	Boris Chertok Aleksei Isaev (engineer) Aleksei Mihailovich Isaev Vostok (spacecraft) KB KhIMMASH Rocket engines of Russia Rocket engines of the Soviet Union Rocket engines using hypergolic propellant Gas-generator cycle GRAU Zenit (satellite) USSR Spacecraft Tonka (fuel) Red fuming nitric acid Sergei Korolev Specific impulse Thrust vectoring Vernier thruster Voskhod (spacecraft) Vostok programme Rocket engine Liquid-fuel rocket S5.35
Link from a Wikipage to an external page	https://web.archive.org/web/20130423190210/http:/kbhmisaeva.ru/main.php%3Fid=53
sameAs	S5.4 S5.4 S5.4 S5.4 S5.4
specific impulse vacuum	266.0 (second)
dbp:wikiPageUsesTemplate	dbt:Citation_needed dbt:Convert dbt:Infobox_rocket_engine dbt:Orbital_spacecraft_rocket_engines dbt:Reflist dbt:Rocket-stub
thumbnail	wiki-commons:Special:FilePath/Vostok_spacecraft_replica.jpg?width=300
caption	Vostok spacecraft replica at the Technik Museum Speyer, Germany. The lower conical section was the service module with the S5.4/TDU-1 engine. (en)
combustion chamber	1 (xsd:integer)
country of origin	USSR
cycle	Gas-generator cycle
date	1959 (xsd:integer)
designer	Aleksei Mihailovich Isaev KB KhIMMASH
first date	1959 (xsd:integer)
fuel	Tonka (fuel)
image size	220 (xsd:integer)
mixture ratio	3.070000 (xsd:double)
oxidiser	Red fuming nitric acid
purpose	Spacecraft breaking engine (en)
status	Retired (en)
successor	S5.35
type	liquid (en)
used in	Vostok, Voskhod and Zenit (en)
has abstract	The S5.4 (AKA TDU-1, GRAU Index 8D66), was a Russian liquid rocket engine burning TG-02 and AK20F in the gas generator cycle. It was originally used as the braking (deorbit) engine of the Vostok, Voskhod, and Zenit spacecraft, which later switched to solid engines. The engine produced 15.83 kilonewtons (3,560 lbf) of thrust with a specific impulse of 266 seconds in vacuum, and burned for 45 seconds, enough for the deorbit. It had a main fixed combustion chamber and four small verniers to supply vector control. It was housed in the service module and had two toroidal tanks for pressurization. It was designed by OKB-2, the Design Bureau led by Aleksei Isaev, for the Vostok program. The braking engine for the first manned spacecraft was a difficult task that no design bureau wanted to take. It was considered critical, as a failure would have left a cosmonaut stranded in space. A solid engine was considered, but the ballistic experts predicted a 500-kilometer (270-nautical-mile) landing error, versus a tenth of that for a liquid engine. It took the coordinated efforts of Boris Chertok and Sergei Korolev to convince Isaev to accept the task. (en) O S5.4 (designado pelo fabricante como 8D66), também conhecido como TDU-1, foi um motor de foguete a combustível líquido que usava e AK20F num ciclo de geração de gás. Ele foi originalmente usado como motor de frenagem (saída de órbita) das espaçonaves: Vostok, Voskhod e Zenit. (pt)
burn time	45.0 (second)
prov:wasDerivedFrom	wikipedia-en:S5.4?oldid=1101109665&ns=0
page length (characters) of wiki page	5886 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:S5.4
is Link from a Wikipage to another Wikipage of	Vostok (spacecraft) A.M. Isayev Chemical Engineering Design Bureau KTDU-35 Tonka (fuel)
is predecessor of	KTDU-35
is foaf:primaryTopic of	wikipedia-en:S5.4

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