LM-3B LAUNCH VEHICLE

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The LM-3B launch vehicle is developed by China Academy of Launch Vehicle Technology (CALT), a subsidiary of China Aerospace Science and 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 at present, 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 35th flight of LM-3B, and the 71th flight of LM-3A series launch vehicle.

LM-3B CONFIGURATION

1. Fairing
2. SC
3. Payload Adapter
4. Vehicle Equipment Bay
5. LH2 Tank
6. LOX Tank
7. Inter-stage Section
8. Third Stage Engine
9. Second Stage Oxidizer Tank
10. Inter-tank Section
11. Second Stage Fuel Tank
12. Second Stage Vernier Engine
13. Second Stage Main Engine
14. Inter-stage Section
15. First Stage Oxidizer Tank
16. Inter-tank Section
17. First Stage Fuel Tank
18. First Stage Engine
19. Booster's Nose
20. Booster's Oxidizer Tank
21. Booster's Fuel Tank
22. Stabilizer
23. Booster's Engine
LM-3B

LM-3B LAUNCH VEHICLE FLIGHT SEQUENCE

No. Flight Events Time(s)
1 Lift-off 0.0000
2 Pitch-over 11.0000
3 Boosters Separation 141.0363
4 Stage-1/Stage-2 Separation 159.3670
5 Fairing Jettison 234.9670
6 Stage-2/Stage-3 Separation 344.1670
7 First Shut-off of Stage-3 616.5848
8 Restart of Stage-3 1,260.0848
9 Second Shut-off of Stage-3 1,442.8991
10 Attitude Adjustment 1,462. 8991
11 SC/LV Separation 1,542. 8991

LAUNCH COUNTDOWN PROCEDURE

No. Time Events
1 L-7hrs LV Stage-3 LOX/ LH2 Fueling
2 L-80min LV Control System Power on & Functional Checkout; Gas Pipe Connectors for Stage-1, Stage-2 & Boosters Drop-off
3 L-60min LV Telemetry System Power on & Functional Checkout
4 L-40min Stopping & Disconnecting of Fairing Air-conditioning Accurate Aiming; Flight Data Presetting & Checking
5 L-22min Stage-3 Engines Pre-cooling
6 L-15min LV Third Stage Propellants Topping
7 L-15~10min SC Umbilical Disconnection
8 L-4min Telemetry & Tracking Systems Power Switch-over Fueling Pipes Disconnection of LV Stage-3
9 L-2min Gas Pipes Disconnection of LV Stage-3
10 L-100sec Control System Power Switch-over
11 L-60sec Umbilical Disconnections of Control System & TT&C Swing off of Supporting Arms of Umbilical Tower
12 L-30sec TT&C Systems Starting
13 L-5sec Camera on
14 0 sec Ignition