长征三号乙运载火箭由中国航天科技集团公司所属中国运载火箭技术研究院研制，它充分继承了长征系列运载火箭所采用的经飞行验证的成熟技术。长征三号乙火箭是长征系列运载火箭中地球同步转移轨道 (GTO) 运载能力最大的运载火箭，它以长征三号甲火箭为芯级并在其第一级捆绑了四个助推器。长征三号乙火箭可将质量为5,500千克的有效载荷送入标准地球同步转移轨道。
本次发射是长征三号乙运载火箭的第19次发射，也是长征三号甲系列运载火箭的第50次发射。
The LM-3B launch vehicle has been developed by China Academy of Launch Vehicle Technology (CALT), a ubsidiary of China Aerospace Science &
Technology Corporation (CASC), upon the extensive heritage of the mature
and flight-proven technology of the Long March family. LM-3B launch vehicle,
the most powerful launch vehicle for GTO mission in Long March fleet, takes
the LM-3A as the core stage with four liquid boosters strapped on the first
stage. LM-3B enhanced version is capable of launching a payload up to 5,500
kg into standard GTO.
This mission is the 19th flight of LM-3B and the 50th flight of LM-3A series
launch vehicles.
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1. 整流罩
Fairing
2. 卫星
SC
3. 卫星支架
Payload Adapter
4. 仪器舱
Vehicle Equipment Bay
5. 液氢箱
LH2 Tank
6. 液氧箱
LOX Tank
7. 二三级级间段
Inter-stage Section
8. 三级发动机
Third Stage Engine
9. 二级氧化剂箱
Second Stage Oxidizer Tank
10. 箱间段
Inter-tank Section
11. 二级燃料箱
Second Stage Fuel Tank
12. 二级游动发动机
Second Stage Vernier Engine
13. 二级主发动机
Second Stage Main Engine
14. 一二级级间杆系
Inter-stage Section
15. 一级氧化剂箱
First Stage Oxidizer Tank
16. 箱间段
Inter-tank Section
17. 一级燃料箱
First Stage Fuel Tank
18. 一级发动机
First Stage Engine
19. 助推器头锥
Booster's Nose
20. 助推器氧化剂箱
Booster's Oxidizer Tank
21. 助推器燃料箱
Booster's Fuel Tank
22. 稳定翼
Stabilizer
23. 助推器发动机
Booster's Engine |
发射倒计时程序
LAUNCH COUNTDOWN PROCEDURE
| 序号/No. |
时间 TIME |
事 件 |
EVENTS |
| 1 |
L-7.5hr |
三级液氧加注 |
LV Stage-3 LOX fueling |
| 2 |
L-6hr |
三级液氢加注 |
LV Stage-3 LH2 fueling |
| 3 |
L-80min |
控制系统加电、功能检查 |
LV Control System power on & functional checkout |
| 4 |
L-60min |
遥测系统加电、功能检查 |
LV Telemetry System power On & functional checkout |
| 5 |
L-40min |
整流罩空调停止、连接器脱落
精瞄；飞行数据装订、检查
一、二级、助推器气管连接器脱落 |
Stopping & disconnecting of Fairing air-conditioning
Accurate Aiming; Flight data presetting and checking;
Gas pipe connectors for Stage-1, Stage-2 & boosters drop-off |
| 6 |
L-22min |
三级发动机预冷 |
Stage-3 Engines pre-cooling |
| 7 |
L-13min |
三级推进剂射前补加 |
LV Third Stage Propellants Topping |
| 8 |
L-15～10min |
卫星脱落插头脱落 |
SC umbilical disconnection |
| 9 |
L-3min |
遥测、外测系统转电
三级加注连接器脱落 |
Telemetry and Tracking Systems power switch-over
Fueling pipes disconnection of LV Stage-3 |
| 10 |
L-2min |
三级气管连接器脱落 |
Gas pipes disconnection of LV Stage-3 |
| 11 |
L-90sec |
控制系统转电 |
Control System power switch-over |
| 12 |
L-60sec |
控制、遥测、外测系统脱落插头脱落，摆杆摆开 |
Umbilical disconnections of Control System & TT&C
Swing off of supporting arms of Umbilical Tower |
| 13 |
L-30sec |
牵动 |
TT&C Systems Starting |
| 14 |
0 sec |
点火 |
Ignition |
长征三号乙运载火箭飞行时序
LM-3B LAUNCH VEHICLE FLIGHT SEQUENCE
| 序号/No. |
Event |
事件 |
时间
Time from lift-off(s) |
海拔
Altitude(km) |
| 1 |
Lift-off |
起飞 |
0.0 |
1.830 |
| 2 |
Pitch-over |
程序转弯 |
11.0 |
2.042 |
| 3 |
Boosters Separation |
助推器分离 |
141.0 |
56.6 |
| 4 |
Stage-1/Stage-2 Separation |
一二级分离 |
159.4 |
72.3 |
| 5 |
Fairing Jettison |
整流罩分离 |
235.5 |
124.8 |
| 6 |
Stage-2/Stage-3 Separation
and Stage-3 First Start |
二三级分离
三级第一次启动 |
344.2 |
167.6 |
| 7 |
Stage-3 First Shutdown |
三级第一次关机 |
612.9 |
176.5 |
| 8 |
Stage-3 Second Start |
三级第二次启动 |
1,256.4 |
182.5 |
| 9 |
Stage-3 Second Shutdown
Terminal Velocity Adjustment |
三级第二次关机
开始末速修正 |
1,442.4 |
223.1 |
| 10 |
SC/LV Separation |
星箭分离 |
1,542.4 |
316.6 |
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