Encyclopedia Astronautica
DF-4



df4m.jpg
DF-4
Chinese intermediate range ballistic missile. Development of the DF-4 began in 1964 with the objective of fielding a ballistic missile capable of hitting Guam. The technical solution was to add a second stage to the DF-3 IRBM.

The two stage vehicle consisting of 1 x DF3-YF2A + 1 x DF4-YF3. It would form the basis of the CZ-1 satellite launch vehicle.

Launch data is: incomplete. Standard warhead: 2,190 kg (4,820 lb). Maximum range: 4,760 km (2,950 mi). Number Standard Warheads: 1. Warhead yield: 3,300 KT. CEP: 1.19 km (0.73 mi). Boost Propulsion: Storable liquid rocket, Nitric acid/UDMH. Initial Operational Capability: 1981. Total Number Built: 10.

AKA: CSS-3; Dong-Feng 4.
Status: Retired 2005?.
Gross mass: 82,000 kg (180,000 lb).
Payload: 2,190 kg (4,820 lb).
Height: 28.05 m (92.02 ft).
Diameter: 2.25 m (7.38 ft).
Span: 2.74 m (8.98 ft).
Thrust: 1,224.00 kN (275,166 lbf).
Apogee: 500 km (310 mi).
First Launch: 1969.11.16.
Last Launch: 1992.01.01.
Number: 12 .

More... - Chronology...


Associated Countries
See also
  • missile Guided self-propelled military weapon (as opposed to rocket, an unguided self-propelled weapon). More...

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

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • Chang, Iris, Thread of the Silkworm, Basic Books, New York, 1995.
  • Natural Resources Defense Council, Nuclear Weapons Databook 5: British, French and Chinese Nuclear Weapons, Ballinger Publishing, 1990.

Associated Launch Sites
  • Jiuquan China's first launch center, also known as Shuang Cheng Tzu. Jiuquan Satellite Launch Centre, situated at 100 degrees East, 41 degrees North, is located in the Jiuquan Region, Gansu province, north-western China. It was China's first ballistic missile and satellite launch centre. More...

Associated Stages
  • CZ-1-2 Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 15,000/2,700 kg. Thrust 306.14 kN. Vacuum specific impulse 275 seconds. Masses, engine performance estimated based on successor improved stage and YF-2 engines in first stage. More...
  • CZ-YF-2 Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 64,100/4,100 kg. Thrust 1,224.58 kN. Vacuum specific impulse 268 seconds. More...

DF-4 Chronology


Early 1962 - . Launch Vehicle: DF-4.
  • Chinese project management - . Nation: China. Related Persons: Tsien. Summary: Tsien introduced a computer tool for management of Chinese aerospace development projects analogous to the American PERT program..

1964 September 12 - . LV Family: CZ; DF-2; DF-3. Launch Vehicle: DF-1; DF-3 Tsien; DF-4.
  • Chinese missiles redesignated and new development plan adopted. - . Nation: China. Related Persons: Tsien. Program: Long March. Tsien had conducted a series of meetings with the Chinese leadership during the year to redefine China's missile development plans. There are clashes between Tsien, who favours an American engineering approach, and his staff, who were trained in Russian and favour the Soviet approach. Finally the missiles were defined by their target objectives, and a new development plan was adopted, with definite goals. The 1059 missile (copy of Russian R-2) was redesignated DF-1. The DF-2 was to be improved to carry an atomic bomb to a range sufficient to hit Japan. The DF-3 ICBM was cancelled, and the new DF-3 project would involve development of a nuclear-tipped missile capable of reaching the Philippines (earlier referred to as the DF-1). The DF-4 was to be capable of hitting Guam, and the DF-5 would be an ICBM capable of reaching the United States. The DF-2, DF-3 and DF-4 would use strap-down accelerometer guidance packages, while the DF-5 was to be equipped with a full-fledged inertial guidance unit.

1966 January 4 - . Launch Vehicle: DF-4.
  • Chinese ICBM plans - . Nation: China. Related Persons: Tsien. Summary: Tsien proposes to add electronic countermeasures and other penetration aids to the DF-5 ICBM in order to defeat the planned American ABM system..

1969 November 16 - . Launch Site: Jiuquan. Launch Vehicle: DF-4. LV Configuration: DF-4 601902.
  • R&D (Destruct) - . Nation: China. Agency: MAI. Apogee: 500 km (310 mi).

1970 January 30 - . Launch Site: Jiuquan. Launch Complex: Jiuquan LA2A. Launch Vehicle: DF-4.
  • R&D (Minfeng target) - . Nation: China. Agency: MAI. Apogee: 500 km (310 mi). Summary: First test of prototype DF-3 (perhaps same configuration as CZ-1); not deployed..

1970 November 23 - . Launch Site: Jingyu. Launch Vehicle: DF-4. LV Configuration: DF-4 601906.
  • Long range test - . Nation: China. Agency: MAI. Apogee: 500 km (310 mi).

1976 May 14 - . 21:55 GMT - . Launch Site: Jiuquan. Launch Vehicle: DF-4. LV Configuration: DF-4 702601.
  • Performance test - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1976 June 1 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Date uncertain. First test of DF-4. - . Nation: China. Program: Long March.

1976 August 24 - . 22:00 GMT - . Launch Site: Jiuquan. Launch Vehicle: DF-4. LV Configuration: DF-4 702602.
  • Performance test - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1977 September 30 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Full range test - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1977 November 22 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Full range test - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1980 February 9 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Test - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1980 August 2 - . 15:01 GMT - . Launch Site: Jiuquan. Launch Vehicle: DF-4. LV Configuration: DF-4 802013.
  • - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1980 August 15 - . Launch Site: Jingyu. Launch Vehicle: DF-4.
  • First DF-4 test from Jingyu. - . Nation: China. Program: Long March. Summary: First launch from Jingyu test site..

1980 October 15 - . Launch Site: Jingyu. Launch Vehicle: DF-4.
1980 October 31 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • - . Nation: China. Agency: MAI. Apogee: 1,000 km (600 mi).

1986 Oct - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Op test - . Nation: China. Agency: MAI. Apogee: 500 km (310 mi).

1992 - . Launch Site: Jiuquan. Launch Vehicle: DF-4.
  • Training - . Nation: China. Agency: MAI. Apogee: 500 km (310 mi).

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