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RD-869 (РД-869) Country of origin Soviet Union Date 1983-1985 First flight March 1986 Designer Yuzhnoye Design Bureau Manufacturer Yuzhmash Application Upper Stage Associated LV R-36M2 Predecessor RD-864 Status In service Propellant N 2 O 4 UDMH Mixture ratio 1.8 Cycle Gas generator Chamber 4 Thrust
High thrust mode: 20.47 kN (4,600 lbf)
Low thrust mode: 8.58 kN (1,930 lbf)
Chamber pressure
High thrust mode: 4.1 MPa (590 psi)
Low thrust mode: 1.7 MPa (250 psi)
Specific impulse
High thrust mode: 313 seconds
Low thrust mode: 302.3 seconds
Burn time Up to 700 s Restarts 50 Gimbal range ±55° Length 4,020 mm (158 in ) Diameter 1,420 mm (56 in ) Dry weight 196 kg (432 lb ) R-36M2 third stageReferences [1] [5] [6] [10]
The RD-864 (GRAU : 15D177 ) is a Soviet liquid propellant rocket engine burning UDMH and nitrogen tetroxide in a gas generator combustion cycle .[1] thrust vector control by gimbaling each nozzle in a single axis ±55°. It is used on the third stage of the R-36M UTTKh (GRAU : 15A18 ) and Dnepr .[5] R-36M2 (GRAU : 15A18M ), an improved version, the RD-869 (GRAU : 15D300 ) was developed.[1] [6] [10] [11]
History [ edit ]
When the Soviet military developed an improved version of the R-36M ICBM , Yangel 's OKB-586 developed a new engine for the third stage, the RD-864 . Developed between 1976 and 1978 it flew for the first time on October 31, 1977. With the START I and START II the some 150 R-36M and R-36M UTTKh were retired and to be destroyed by 2007.[1] [4] Yuzhnoe Design Bureau (the R-36M designer) successfully developed the Dnepr launch vehicle .[3] [12] [12] [13]
The RD-869 was an improved version for the most powerful Soviet ICBM ever, the R-36M2 (15A18M). It had improved efficiency, restart capability and burn life over the RD-864.[1] [10] [13]
Versions [ edit ]
There are two versions of this engine:
RD-864 (GRAU Index: 15D177 ): First developed as the third stage engine for the R-36M UTTKh (15A18) ICBM and, by extension, on the Dnepr launch vehicle .[1] [5]
RD-869 (GRAU Index: 15D300 ): An improved version of the RD-864. It has improved efficiency, restart capability and burn life. It is used on the R-36M2 (15A18M).[1] [6]
See also [ edit ]
R-36M UTTKh - The most powerful ever Soviet ICBM for which the RD-864/869 engines were created.
Dnepr - A Ukrainian small rocket project that uses the RD-864.
Yuzhnoe Design Bureau - The RD-864/869 designer bureau.
Yuzhmash - A multi-product machine-building company that's closely related to Yuzhnoe and manufactures the RD-RD-864/869.
References [ edit ]
^ Brügge, Norbert. "Dnepr Propulsion" . B14643.de. Retrieved 2015-08-06 .
^ a b Wade, Mark. "Dnepr" . Encyclopedia Astronautica . Archived from the original on October 15, 2002. Retrieved 2016-07-07 .
^ a b Wade, Mark. "R-36MU 15A18" . Encyclopedia Astronautica . Archived from the original on November 29, 2010. Retrieved 2016-07-07 .
^ a b c d Wade, Mark. "RD-864" . Encyclopedia Astronautica . Archived from the original on June 26, 2002. Retrieved 2016-07-07 .
^ a b c d Wade, Mark. "RD-869" . Encyclopedia Astronautica . Archived from the original on May 6, 2002. Retrieved 2016-07-07 .
^ Pillet, Nicolas. "Le troisième étage de Dniepr" [The Dnepr third stage] (in French). Kosmonavtika.com. Retrieved 2016-07-07 .
^ "Dnepr" . Yuzhnoye. Archived from the original on 28 October 2014.
^ "Dnepr Launch Vehicle" . Yuzhmash. Archived from the original on 15 December 2012.
^ a b c Wade, Mark. "R-36M2 15A18M" . Encyclopedia Astronautica . Archived from the original on September 10, 2010. Retrieved 2016-07-07 .
^ Pal'kov, V. A.; Timchenko, A. Ju.; Stecenko, A. Ja. (2014). Tkachenko, V. D. (ed.). Шестьдесят лет в ракетостроении и космонавтике. 1954-2014 [Sixty years in rocketry and astronautics. 1954-2014 ] (in Russian). Yuzhnoye SDO. pp. 183–185. ISBN 978-966-348-349-8
^ a b Krebs, Gunter Dirk (2016-06-13). "Dnepr" . Gunter's Space Page . Retrieved 2016-07-07 .
^ a b "Strategic Rocket Forces" . January 2016. Retrieved 2016-07-07 .
External links [ edit ]
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* Different versions of the engine use different propellant combinations
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R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=RD-864&oldid=1181052073 " C a t e g o r i e s : ● R o c k e t e n g i n e s u s i n g h y p e r g o l i c p r o p e l l a n t ● R o c k e t e n g i n e s u s i n g t h e g a s - g e n e r a t o r c y c l e ● R o c k e t e n g i n e s o f t h e S o v i e t U n i o n ● Y u z h n o y e r o c k e t e n g i n e s ● Y u z h m a s h r o c k e t e n g i n e s ● R o c k e t e n g i n e s o f U k r a i n e ● R o c k e t r y s t u b s H i d d e n c a t e g o r i e s : ● C S 1 R u s s i a n - l a n g u a g e s o u r c e s ( ru ) ● C S 1 F r e n c h - l a n g u a g e s o u r c e s ( fr ) ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● W e b a r c h i v e t e m p l a t e w a y b a c k l i n k s ● A l l s t u b a r t i c l e s
● T h i s p a g e w a s l a s t e d i t e d o n 2 0 O c t o b e r 2 0 2 3 , a t 1 5 : 1 8 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
