Encyclopedia Astronautica
CZ-2C/SD



cz2csd.jpg
CZ-2
On April 28, 1993, the Chinese Great Wall Industrial Corporation and Motorola signed a launch services contract for multiple launch of Iridium communications satellites using CZ-2C/SD launch vehicles. The main differences between the CZ-2C and the CZ-2C/SD were: a modified fairing with a diameter of 3.35m; a newly developed Smart Dispenser; improved second stage fuel and oxidizer tanks; and second stage engines with higher expansion ratio nozzles.

The Smart Dispenser included a solid rocket kick motor for insertion of the Iridium satellites into a 780 km circular orbit. Each CZ-2C/SD had the capacity of delivering two Iridium system satellites. A successful CZ-2C/SD demonstration launch was conducted from Taiyuan on September 1, 1997. The first three deployment launches for the Iridium program were successfully conducted on December 8, 1997, March 26, 1998 and May 2, 1998. Another variant of the vehicle was announced in May 2001 when it was announced that the DoubleStar and KOMPSAT-2 satellites would be launched by a CZ-2C with a CTS upper stage. This was apparently a further development of the SD and was a three-axis stabilised upper stage consisting of a Spacecraft Adapter and an Orbital Maneuver System. It was capable of putting 1400 kg of payload into a 900 km sun-synchronous orbit.

LEO Payload: 2,800 kg (6,100 lb). Payload: 1,400 kg (3,000 lb) to a 780 km 86 deg orbit. Launch Price $: 25.000 million in 1999 dollars.

Stage Data - CZ-2C/SD

  • Stage 1. 1 x CZ-2C-1. Gross Mass: 153,000 kg (337,000 lb). Empty Mass: 10,000 kg (22,000 lb). Thrust (vac): 3,295.000 kN (740,745 lbf). Isp: 291 sec. Burn time: 122 sec. Isp(sl): 261 sec. Diameter: 3.35 m (10.99 ft). Span: 6.00 m (19.60 ft). Length: 20.52 m (67.32 ft). Propellants: N2O4/UDMH. No Engines: 4. Engine: YF-20A. Other designations: L-140. Status: In Production.
  • Stage 2. 1 x CZ-2C/SD-2. Gross Mass: 55,000 kg (121,000 lb). Empty Mass: 5,000 kg (11,000 lb). Thrust (vac): 761.900 kN (171,282 lbf). Isp: 298 sec. Burn time: 190 sec. Isp(sl): 270 sec. Diameter: 3.35 m (10.99 ft). Span: 3.35 m (10.99 ft). Length: 10.00 m (32.00 ft). Propellants: N2O4/UDMH. No Engines: 1. Engine: YF-22A/23A. Other designations: L-35. Status: In Production. Comments: Stretched version of CZ-2C second stage. Empty mass estimated.

AKA: Chang Zheng 2C-III/SD; Long March 2C; Chang Zheng-2C/SD; CZ-2C/CTS.
Status: Active.
Gross mass: 213,000 kg (469,000 lb).
Payload: 2,800 kg (6,100 lb).
Height: 40.40 m (132.50 ft).
Diameter: 3.35 m (10.99 ft).
Thrust: 2,960.00 kN (665,430 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1997.09.01.
Last Launch: 1999.06.11.
Number: 7 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • LM 700 American communications satellite. 98 launches, 1997.05.05 (Iridium 8) to 2002.06.20 (Iridium SV98 ). The LM 700 had its first use in the Iridium system, a commercial communications network comprised of a minimum of 66 LEO spacecraft. More...

Associated Engines
  • SpaB-54 Fourth Academy solid rocket engine. In Production. Kick stage for orbital insertion of Iridium satellites Used on CZ-2C/SD launch vehicle. First flight 1997. More...

See also
  • CZ China's first ICBM, the DF-5, first flew in 1971. It was a two-stage storable-propellant rocket in the same class as the American Titan, the Russian R-36, or the European Ariane. The DF-5 spawned a long series of Long March ("Chang Zheng") CZ-2, CZ-3, and CZ-4 launch vehicles. These used cryogenic engines for upper stages and liquid-propellant strap-on motors to create a family of 12 Long-March rocket configurations capable of placing up to 9,200 kg into orbit. In 2000 China began development of a new generation of expendable launch vehicles using non-toxic, high-performance propellants with supposedly lower operating costs. However these encountered development delays, and it seemed the reliable Long March series of rockets would continue in operational use for nearly fifty years before being replaced. More...

Associated Manufacturers and Agencies
  • CALT Chinese manufacturer of rockets, spacecraft, and rocket engines. China Academy of Launch Vehicle Technology, Beijing, China. More...

Associated Programs
  • Iridium The Iridium system is a commercial communications network comprised of a constellation of 66 LEO spacecraft. The system uses L-Band to provide global communications services through portable handsets. More...

Associated Launch Sites
  • Taiyuan China's launch site for launch of polar orbiting satellites, also known as Wuzhai. Taiyuan Satellite Launch Center (TSLC) is situated in Kelan County, the northwest part of Shanxi Province, 280 km by road from Taiyuan City. More...

Associated Stages
  • CZ-2C/SD-2 N2O4/UDMH propellant rocket stage. Loaded/empty mass 55,000/5,000 kg. Thrust 761.90 kN. Vacuum specific impulse 298 seconds. Stretched version of CZ-2C second stage. Empty mass estimated. More...
  • CZ-2C-1 N2O4/UDMH propellant rocket stage. Loaded/empty mass 153,000/10,000 kg. Thrust 3,295.00 kN. Vacuum specific impulse 291 seconds. More...

CZ-2C/SD Chronology


1997 September 1 - . 14:00 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-15 (47).
  • Iridium - . Payload: Iridium s/n MFS 1. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 24925 . COSPAR: 1997-048A. Apogee: 633 km (393 mi). Perigee: 620 km (380 mi). Inclination: 86.3400 deg. Period: 97.25 min. Summary: Plane 5. Ascending node 271.9 degrees. Dummy satellite..
  • Iridium - . Payload: Iridium s/n MFS 2. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 24926 . COSPAR: 1997-048B. Apogee: 634 km (393 mi). Perigee: 620 km (380 mi). Inclination: 86.3400 deg. Period: 97.26 min. Summary: Plane 5. Ascending node 272 degrees. Dummy satellite..

1997 December 8 - . 07:16 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-16 (49).
  • Iridium 42 - . Payload: Iridium s/n SV042. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25077 . COSPAR: 1997-077A. Apogee: 780 km (480 mi). Perigee: 776 km (482 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 6. Ascending node 325.8 degrees..
  • Iridium 44 - . Payload: Iridium s/n SV044. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25078 . COSPAR: 1997-077B. Apogee: 780 km (480 mi). Perigee: 774 km (480 mi). Inclination: 86.3900 deg. Period: 100.40 min. Summary: Plane 6. Ascending node 325.8 degrees. Not in service..

1998 March 25 - . 17:01 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-17 (50).
  • Iridium 51 - . Payload: Iridium s/n SV051. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25262 . COSPAR: 1998-018A. Apogee: 756 km (469 mi). Perigee: 751 km (466 mi). Inclination: 86.4500 deg. Period: 99.90 min. Summary: Plane 4. Ascending node 262.5 degrees. Not in service..
  • Iridium 61 - . Payload: Iridium s/n SV061. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25263 . COSPAR: 1998-018B. Apogee: 780 km (480 mi). Perigee: 776 km (482 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 4. Ascending node 262.5 degrees..

1998 May 2 - . 09:16 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-18 (51).
  • Iridium 69 - . Payload: Iridium s/n SV069. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25319 . COSPAR: 1998-026A. Apogee: 783 km (486 mi). Perigee: 777 km (482 mi). Inclination: 86.4000 deg. Period: 100.46 min. Summary: Plane 2. Ascending node 199.4 degrees. Not in service..
  • Iridium 71 - . Payload: Iridium s/n SV071. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25320 . COSPAR: 1998-026B. Apogee: 778 km (483 mi). Perigee: 775 km (481 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 2. Ascending node 199.3 degrees. Not in service..

1998 August 19 - . 23:01 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-19 (54).
  • Iridium 3 - . Payload: Iridium s/n SV078. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25431 . COSPAR: 1998-048A. Apogee: 779 km (484 mi). Perigee: 776 km (482 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 2. Ascending node 199.4 degrees..
  • Iridium 76 - . Payload: Iridium s/n SV076. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25432 . COSPAR: 1998-048B. Apogee: 780 km (480 mi). Perigee: 776 km (482 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 2. Ascending node 199.4 degrees..

1998 December 19 - . 11:39 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-20 (55).
  • Iridium 11 - . Payload: Iridium s/n SV088?. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25577 . COSPAR: 1998-074A. Apogee: 780 km (480 mi). Perigee: 776 km (482 mi). Inclination: 86.4000 deg. Period: 100.40 min. Summary: Plane 2. Ascending node 197 degrees. Parking orbit..
  • Iridium 20 - . Payload: Iridium s/n SV089?. Mass: 689 kg (1,518 lb). Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25578 . COSPAR: 1998-074B. Apogee: 710 km (440 mi). Perigee: 709 km (440 mi). Inclination: 86.5000 deg. Period: 99.00 min. Summary: Plane 2. Ascending node 197.2 degrees. Parking orbit..

1999 June 11 - . 17:15 GMT - . Launch Site: Taiyuan. Launch Complex: Taiyuan LC1. LV Family: CZ. Launch Vehicle: CZ-2C/SD. LV Configuration: Chang Zheng 2C-III/SD CZ2C-21 (57).
  • Iridium 14A - . Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25777 . COSPAR: 1999-032A. Apogee: 711 km (441 mi). Perigee: 708 km (439 mi). Inclination: 86.5000 deg. Period: 99.00 min.
  • Iridium 21A - . Nation: USA. Agency: Iridium. Manufacturer: Lockheed; Motorola. Program: Iridium. Class: Communications. Type: Civilian communications satellite. Spacecraft: LM 700. USAF Sat Cat: 25778 . COSPAR: 1999-032B. Apogee: 711 km (441 mi). Perigee: 708 km (439 mi). Inclination: 86.5000 deg. Period: 99.00 min.

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