Long March 1D is the improved version of Long March 1

Long March 1

Long March 1 is 1st member of China's Long March 1 .The study of Long March 1 began in 1965. Long March 1's first flight put China's first satellite Dong Fang Hong 1 to space on April 24, 1970.* Stages: 3...

 rocket

Rocket

A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction...

 stage for Chinese

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 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

External links

• China Academy of Launch Vehicle Technology