China's small operative engines and their using
 

These three small operative engines used for China's lunar and martian exploration projects, Beidou satellites etc. as well for Space Tugs, and in Shenzhou, CMS and Tiangong space modules.
 

  
Comparison YF-50 and YF-50D
 "The YF-50D engine was  used as orbit control engine of Shenzhou manned spacecraft"

   
YF-150
 


4 x YF-50D (Shenzhou)


2 x YF-50D (Tiangong)



YF-150 (Chang'e 3)



YF-150 (Huoxing 1)

 

Design

 Thrust (vac) Spez. Impule (vac)

Propellant

  Use

YF-50

 490 N ? MMH/ N2O4  Satellites, Space Tugs

YF-50D

 2500 N 219.2 sec  Shenzou, Tiangong, Tianzhou, CMS

YF-150

 1500 .... 7500 N

315.3 sec

 UDMH/ N2O4  Chang'e 3, 4, 5T, 5, Huoxing-1

 

Space Tugs

 

  Small A.U.S.

..........for the KZ-11 ?

           

 

  TY-1 space tug


The TY-1 space tug is presented as an additional upper stage for the CZ-2D and CZ-4 in SSO missions. Further details are not known.

                

 

  YZ-1 (A) space tug


The Yuanzheng-1 (YZ-1) space tug is armed with an YF-50 engine of 490 N thrust, burning MMH/N2O4. The stage should be able to do 2 burns and has a 6.5 hour  lifetime. It will be adapted for use on the CZ-3A/B/C series mainly for direct GEO or HEO insertion missions.

       


      
YZ-1 bus

 

  YZ-1S space tug


Another space tug (YZ-1S) is announced for use in the CZ-2. It could be the revised former TY-1 space tug.

 

  YZ-2 space tug


The Yuanzheng-2 (YZ-2) space tug is armed with two YF-50 engines of about 1000 N thrust, burning MMH/N2O4. The stage should be able to do 2 burns and has a 6.5 hour  lifetime. It will be adapted for use mainly for direct GEO insertion missions.


YZ-2 bus (with two YF-50 engines)