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Everything about Prithvi Missile totally explained

Prithvi (Sanskrit: पृथ्वी, [[prithvi|]] "Earth") is a tactical surface-to-surface, short-range ballistic missile (SRBM) developed by DRDO of India under the Integrated Guided Missile Development Program.

Development and History

The Government of India launched the Integrated Guided Missile Development Program in 1983 for achieving self sufficiency in the development and production of wide range of Ballistic Missiles, Surface to Air Missiles etc.
   Prithvi was the first missile to be developed under the Program. DRDO earlier attempted to reverse engineer SA-2 Surface-to-air Missile under Project Devil. The Prithvi is said to have its propulsion technology derived from the SA-2 surface-to-air missile. The dual liquid engine of Prithvi I might have been derived from scaling down of 30 ton Valiant Engine and scaling up of V-755 engine used by SA-2 surface-to-air missile.
   Variants make use of either liquid or both liquid and solid fuels. Developed as a battlefield missile, it could carry a nuclear warhead in its role as a tactical nuclear weapon.

Variants

The Prithvi missile project encompassed developing three variants for use by the Indian Army, Indian Air Force and the Indian Navy. The initial project framework of the Integrated Guided Missile Development Program outlines the variants in the following manner.
  • Prithvi I - Army Version (150 km range with a payload of 1,000kg)
  • Prithvi II - Air Force Version (250 km range with a payload of 500kg)
  • Prithvi III - Naval Version (350 km range with a payload of 500kg)
  • Dhanush- Dhanush is reportedly a naval version of Prithvi which can be launched from Ships.. Some sources claim that Dhanush is a System consisting of stabilization platform and missiles, which has the capability to launch both Prithvi II and Prithvi III from Ships is a two-stage surface-to-surface missile in the developmental stages. The first stage is solid fuelled with a 16 metric ton force (157 kN) thrust motor. The second stage is liquid fuelled. The missile can carry a 1000 kg warhead to a distance of 350 km and a 500 kg warhead to a distance of 600 kilometres and a 250 kilogram warhead up to a distance of 750 kilometres. The design is developed while keeping the navy in mind. Sagarika will be a nuclear-capable, cruise missile, capable of being mounted in ships or submarines. Considering the upward capability developments, Prithvi class of missiles could be reclassified from short-range ballistic missile to a medium range ballistic missile. The current codename of the operational variant Dhanush could pave way for the new codename Sagarika as Sagarika becomes operational. Dhanush was successfully tested on March 30, 2007. Sagarika will be inducted into the Advanced Technology Vessel being developed for Indian Navy.
       There were a number of shortcoming in the initial version of Prithvi missiles namely, High circular error probability (CEP) of around 500 meters and volatility of the liquid-fuelled propulsion system requiring fuelling only just before launching. These shortcomings are being overcome in the latest developmental versions by incorporating of global positioning system (GPS) into the missiles to reduce the CEP to as low as 10 to 15 meters and use of solid fuel in the propulsion system.

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