Author Topic: RD-120 the Basis of New Chinese Engines?  (Read 707 times)

Offline Danderman

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RD-120 the Basis of New Chinese Engines?
« on: 10/04/2017 02:17 PM »
This topic is the place for data on whether the new Chinese rocket engines are derived from the RD-120 engine. I have seen many allegations, but no actual data.

Online SmallKing

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Re: RD-120 the Basis of New Chinese Engines?
« Reply #1 on: 10/04/2017 02:28 PM »
I think you mean YF-100 series?
The answer is yes
« Last Edit: 10/04/2017 02:29 PM by SmallKing »
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Offline Hog

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Re: RD-120 the Basis of New Chinese Engines?
« Reply #2 on: 10/08/2017 03:03 PM »
For clarity, the RD0120 and the RD-120 engines are in fact different engines?  The RD-0120 were the engines used on Energia.
Paul

Offline Kryten

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Re: RD-120 the Basis of New Chinese Engines?
« Reply #3 on: 10/08/2017 04:16 PM »
For clarity, the RD0120 and the RD-120 engines are in fact different engines?  The RD-0120 were the engines used on Energia.
Yes, RD-120 is the Zenit's second stage main engine.

Offline russianhalo117

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Re: RD-120 the Basis of New Chinese Engines?
« Reply #4 on: 10/08/2017 04:41 PM »
This topic is the place for data on whether the new Chinese rocket engines are derived from the RD-120 engine. I have seen many allegations, but no actual data.

For clarity YF-100 is derived from a modified Ukrainian RD-120 with elements from RD-120K engine version and is designated in Ukraine as KRD-120. KRD-120 is also the basis for developing the RD-870 for Tsyklon-4M and RD-872 is the second stage equivalent of the RD-120. The Commercial Agreement for YF-100 is filed in Ukraine and a redacted copy may be obtainable.

http://russianspaceweb.com/rd870.html
Quote
Other modifications to RD-120 to build RD-870
...
To reduce the time necessary for the engine to transition from ignition mode to full-thrust mode, a special hydraulic switch will be replaced with an electric valve. Its design will be based on a similar device developed at KB Yuzhnoe for the KRD-120 engine under a commercial agreement with China. Under the name YF-100, that Ukrainian engine successfully propelled a Chinese launch vehicle for the first time in 2015.
...
« Last Edit: 10/08/2017 04:47 PM by russianhalo117 »

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