|
An overlook
to China's new generation of Rocket Engines
A new generation of engines has been and is being developed for China's new
generation of launch vehicles CZ-5 to CZ-9 and CZ-FH. This includes both engines
that work with Kerosene/LOX and cryogenic engines that work with LH2/LOX.
There are also efforts to develop methane/LOX engines.
|
Combustors
|
|
CZ-5
|
CZ-6
|
CZ-7 & CZ-7A
|
CZ-8
|
CZ-FH
|
CZ-9
|
|
Stages------>
|
B. |
1. |
2. |
- |
- |
1. |
2. |
- |
B |
1. |
2. |
3.
|
B. |
1. |
2. |
- |
B. |
1. |
2. |
3. |
B. |
1. |
2. |
3. |
|
YF-100 /-100F
|
Kerosene/LOX |
2x |
|
|
-
|
|
1x
|
|
|
1x |
2x
|
|
|
1x
|
2x
|
|
-
|
|
|
|
|
|
|
|
|
|
YF-100K
|
|
|
|
|
- |
|
|
|
|
|
|
|
|
|
|
|
7x |
7x |
|
|
|
|
|
|
|
YF-100M
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2x
|
|
|
|
|
|
|
YF-115
|
|
|
|
|
|
1x
|
|
|
|
|
4x
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
YF-130 (2)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2x |
4x |
|
|
|
YF-75
|
LH2/LOX |
|
|
|
|
|
|
|
|
|
|
|
(2x)
|
|
|
2x
|
|
|
|
|
|
|
|
|
|
|
YF-75D
|
|
|
(2x)
|
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3x
|
|
|
|
|
|
YF-77
|
|
4x
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
YF-79
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4x
|
|
YF-90
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2x
|
|
1.) Kerosene/LOX rocket engines
The first engine YF-100 is the starting point for subsequent
variants in this category. They all work in the "staged combustion cycle"
wth preburners. The YF-100 engine is based on the Energomash RD-120 engine.
YF-100 & YF-100F
YF-100
is currently used for booster and first stage of CZ-5, CZ-7 and CZ-8.
The YF-100F engine will be a forced variant.
A special version (YF-100GBI) is used for the first stage of the CZ-6. |
|
Performance:
|
Thrust
s.l. (kN) |
Thrust
vac (kN) |
Isp
s.l. (sec) |
Isp
vac (sec) |
Kerosene/LOX
(mix) |
Flow
rate (kg/sec) |
Chamber
press. (MPa |
Nozzle
area ratio |
| YF-100 |
1,188.6 |
1,329.1 |
300 |
335.5 |
1:2.6 |
404.0 |
17.7 |
48.3 |
| YF-100F |
1,223.5 |
1,368.3 |
302 |
337.5 |
415,9 |
18 |
|
|
|
|
YF-100K & YF-100N
YF-100K
and YF-100N are
changed variants
of the YF-100F and intended for booster and first stage of the CZ-FH
(CZ-5G). |
YF-100M
YF-100M is the vacuum version of the YF-100K with an extended nozzle.
It is intended as pair for the second stage of the CZ-FH (CZ-5G). |
| Performance: |
Thrust s.l. (kN) |
Thrust vac (kN) |
Isp s.i. (sec) |
Isp vac (sec) |
Kerosene/LOX (mix) |
Flow rate (kg/sec) |
Chamber press. (MPa) |
Nozzle area ratio |
| YF-100M |
- |
1,386.8 |
- |
340 |
1:2.6 |
415.9 |
18 |
90 |
|
|
|
|
YF-102 & YF-102V
YF-102 is a changed hypergolic YF-20 engine
with a new turbopump and is intended to be used in a five arrangement
in a launch vehicle (CZ-X) designed by CASC. The engines are also
offered
for sale. The YF-102V (vac) engine is under development. |
| Performance: |
Thrust s.l. (kN) |
Thrust vac (kN) |
Isp s.i. (sec) |
Isp vac (sec) |
Kerosene/LOX (mix) |
Flow rate (kg/sec) |
Chamber press. (MPa) |
Nozzle area ratio |
| YF-102 |
835 (max) |
? |
275 |
? |
? |
309.6 |
8.5 |
|
| YF-102V |
- |
710 |
- |
330 |
? |
219.4 |
|
|
|
YF-130
YF-130
is a
new
powerful
twin-chamber
engine
with a total thrust of
480
t and is currently to be used for boosters and the first stage of the
CZ-9.
This engine is similar to the
Energomash
RD-180. |
| Performance: |
Thrust
s.l. (kN) |
Thrust
vac (kN) |
Isp
s.l. (sec |
Isp
vac (sec |
Kerosene/LOX
(mix) |
Flow
rate (kg/sec) |
Chamber
press. (MPa) |
Nozzle
area ratio |
| YF-130 (2) |
~4,243 |
~4,707 |
306 |
~339.5 |
? |
1,414 |
? |
? |
|
|
|
|
YF-115
YF-115 is a new single-chamber engine for the second stages of the CZ-6,
CZ-7 and CZ-7A. It works in the "staged combustion cycle" and is usually
bundled fourfold. |
2.) Cryogenic rocket engines
All variants are self-developed engines. The forerunner was
the small YF-73 engine, which was used fourfold for the upper stage of the
retired CZ-3. The most powerful so far is the YF-77 engine for the first stage
of the CZ-5.
YF-77
YF-77
is a new development for the LH2/LOX fueled first stage of the CZ-5.
The engine works in an "open gas generator cycle". |
YF-75
YF-75 is the second cryogenic single-chamber engine developed in China
after YF-73. It works in an "open gas generator cycle" and is currently
used in pairs for the CZ-3A, B, C, but also for
the upper stages of the CZ -7A and CZ-8. |
YF-75D
YF-75D is a further development of YF-75, but works in a "closed expander
cycle". It is used in in the upper stages of the CZ-5 (2x) and CZ-FH (3x). |
| Performance: |
Thrust s.l. (kN) |
Thrust vac (kN) |
Isp s.l. (sec) |
Isp vac (sec) |
LH2/LOX (mix) |
Flow rate (kg/sec) |
Chamber press. (MPa) |
Nozzle area ratio |
| YF-75D |
- |
88.36 |
- |
442.6 |
1:6.0 |
20.41 |
4.10 |
80 |
|
|
|
|
YF-90
The powerful YF-90 is under development and will be paired for the second
stage of the CZ-9. It works in the "staged combustion cycle". |
|
