Long March 1D

Long March 1D is the improved version of Long March 1 rocket stage for Chinese space agency craft, mainly for the thrustor of stage 1, from 1020 kilonewtons to 1101.2 kilonewtons, also improved the performance for stage 2 and stage 3. The improved Long March 1D can launch variant of LEO satellite; the orientation of the satellite can be rotating or non-rotating. The first flight in November 1997 was successful.

Technical specifications

The rocket	Stage 1	Stage 2	Stage 3
*Stages: 3 Length 28.220 m Wingspan 3.810 m Liftoff mass 81,075 kg Liftoff thrust 1101.2 kN Thrust-to-mass 13.6 N/kg Payload 930 kg (rotating) 750 kg(non-rotating) (300 km circular, inclination 57 deg) Orbit insertion accuracy diff of ecc 0.001 to 0.005 diff of inc < 0.3 degrees (300～1000 km circular orbit)	Length 19.735 m Diameter 2.250 m Mass of the stage 65,040 kg Mass of the structure 4,080 kg Mass of the fuel 60,860 kg Booster YF-2A Fuel HNO3-27S/UDMH Liftoff thrust (sealevel) 1101.2 kN Specific impulse: 2378 N·s/kg Burn time ~132 s	Length 6.037 m Diameter 2.250 m Stage mass 13,490 kg Structure mass 1,100 kg Fuel mass 12,380 kg Booster YF-40 (two boosters) Fuel N2O4/UDMH Thrust in vacuum 100.86 kN Specific impulse 2981.2 N·s/kg Burn time 360 s	Length: 1.696 m Diameter: 2.054 m Stage mass 1,315 kg Structure mass 523 kg Fuel mass 792 kg liquid 147 kg solid 645 kg Solid rocket booster: FG-36

References

• Data from Aerospace China magazine

External links

• China Academy of Launch Vehicle Technology