DF-5

he Dong Feng 5 or DF-5 (also known as CSS-4) is a 3 stage Chinese intercontinental ballistic missile (ICBM). The DF-5 had its first flight in 1971 and was in operational service 10 years later. Initially the DF-5 ICBMs were stored in a horizontal position in tunnels under high mountains and were to be launched immediately outside the mouth of the tunnel. These missiles must be moved into the open and fueled prior to firing, with the fueling requiring from 30 minutes to two hours. The deployment of a pair of DF-5 ICBMs in silos in central China was completed in 1981. That portion of the DF-5 force that is deployed in silos can be maintained in a ready-to-fire status. In order to enhance the survivability of these missiles, China has constructed a large number of decoy silos which consist of shallow holes excavations with headworks that resemble operational silos.When the DF-5 was first tested in September 1971, it had a range of 10,000 to 12,000 km which allowed it to threaten the western portions of the United States. Beginning in 1983 the Chinese developed the improved DF-5A, with range increased to over 13,000 km and a more accurate guidance system. The DF-5A upgrade increased the throw-weight of the system from 3,000 kg to 3,200 kg.

DF-5
Class Missile
Type Surface to Surface
Manufacturer Wan Yuan Industry Corporation (Beijing)
Production Period 1971 - 1981
Origin China
Country Name Origin Year
China 1981
Country Name Operational Year Retirement Year
China 1981 1986 View
ManufacturerName Production From Production To Quantity
Wan Yuan Industry Corporation (Beijing) 1971 1981 View
The DF-5 was designed under the leadership of Tu Shou'e at the China Academy of Launch Technology (CALT); Li Xu'e) served as deputy chief designer. The missile was produced at the China's Factory 211 (Capital Astronautics Co., also known as the Capital Machine Shop.
The DF-5 was first flight tested in 1971, with final tests into the Pacific Ocean in May 1980. Two silo-based missiles were put into 'trial operational deployment' in 1981. It had a range of 10,000 to 12,000 km which allowed it to threaten the western portions of the United States. Beginning in 1986 the Chinese started developing the improved DF-5A, with range increased to over 15,000 km and a more accurate guidance system. The DF-5A upgrade increased the throw-weight of the system from 3,000 kg to 3,200 kg.

As with the DF-4, initially the DF-5 was stored in a horizontal position in tunnels under high mountains, and are launched immediately outside the mouth of the tunnel. The missiles must be moved into the open and fueled prior to firing, an operational mode dubbed chu men fang pao (firing a cannon outdoors), with the fueling operation apparently requiring about two hours. The initial deployment of a pair of DF-5s in silos in Central China was completed in 1981. That portion of the DF-5A force that is deployed in silos could be maintained in a ready-to-fire status. In order to enhance the survivability of these missiles, China has constructed a large number of decoy silos which consist of shallow holes excavations with headworks that resemble operational silos.

According to the National Air and Space Intelligence Center, as of 1998 the deployed DF-5 force consisted of "fewer than 25" missiles. From early 1999 to 2008 the total deployed DF-5 force was generally estimated at about 20 missiles.

General Information
Developed by China
Deployed by China
Development Year 1965
Deployment Year 1981(DF-5), 1986(DF-5A)
Retirement Year 2000(DF-5)
Platform hardened underground silos
Number manufactured 20-50(including space launcher CZ-2Cs)
Number deployed 4-10 silos, 10-15 (DF-5A)
Contractor The Wan Yuan Industry Corporation (Beijing)
Design First Academy of the Ministry of Aerospace Industries

Dimensions and Performance
Length 32.6m (1st-stage: 20.5m, 2nd-stage: 7.6m, warhead and reentry section: 4.5m)
Body Diameter 3.35m
Launch Weight 183,000kg
Range 13,000km(DF-5A), 12,000km(DF-5)
Accuracy 500m CEP(DF-5A), 3,000m CEP(DF-5)

Components
Propulsion 2-stage liquid-fuel rocket motor
Engine 1st. stage: a cluster of 4 YF-20 engines (280T thrust), 2nd. stage: a YF-22 engine (70T thrust)
Payload single warhead: 3,000kg(DF-5), 3,200kg(DF-5A)
Warhead 3-5MT nuclear warhead
Guidance inertial

End notes