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2 March 2017 Question Bank


2nd  MARCH 2017 


(1 Questions)


Answer questions in NOT MORE than 200 words each. Content of the answer is more important than its length.

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GS III : Science and Technology

1.   Recently, Defence Research and Development Organisation (DRDO) successfully carried out a test of an interceptor missile. In this context  discuss India’s Ballistic Missile Defence  System (BMD) and it’s implications on India.

  •  The Indian Ballistic Missile Defence Programme is an initiative to develop and deploy a multi-layered ballistic missile defence system to protect from ballistic missile attacks.
  •  Introduced in light of the ballistic missile threat from mainly Pakistan, it is a double-tiered system consisting of two land and sea-based interceptor missiles, namely the Prithvi Air Defence (PAD) missile for high altitude interception, and the Advanced Air Defence (AAD) Missile for lower altitude interception.
  •  The two-tiered shield should be able to intercept any incoming missile launched 5,000 kilometres away.
  •  The system also includes an overlapping network of early warning and tracking radars, as well as command and control posts.

Prithvi Air Defence (PAD)

  •  The Prithvi Air Defence (PAD) is an anti-ballistic missile developed to intercept incoming ballistic missiles outside the atmosphere (exo-atmospheric). Based on the Prithvi missile, PAD is a two-stage missile with a maximum interception altitude of 80 km (50 mi). The first stage is a Solid fuelled motor while the second stage is Liquid fuelled. It has manoeuvre thrusters which can generate a lateral acceleration of more than 5 gs at 50 km (31 mi) altitude. Guidance is provided by an intertial navigation system with mid-course updates from LRTR and active radar homing in the terminal phase. PAD has capability to engage the 300 to 2,000 km (190 to 1,240 mi) class of ballistic missiles at a speed of Mach 5.
  •  LRTR is the target acquisition and fire control radar for the PAD missile. It is an active phased array radar having capability to track 200 targets at a range of 600 km (370 mi). The PAD missile has also been called Pradyumna.
  •  Further development led to the improvement of the interception range from 50 to 80 km (31 to 50 mi). The improved missile will utilise a gimbaled directional warhead, a technology also used by Israel, the US and Russia. This technology allows for a smaller warhead to destroy the target missile.

Advanced Air Defence (AAD)

  •  Advanced Air Defence (AAD) is an anti-ballistic missile designed to intercept incoming ballistic missiles in the endo-atmosphere at an altitude of 30 km (19 mi). AAD is a single-stage, solid-fuelled missile. Guidance is similar to that of PAD: it has an inertial navigation system, midcourse updates from ground based radar and active radar homing in the terminal phase. It is 7.5 m (25 ft) tall, weighs around 1.2 t (1.2 long tons; 1.3 short tons) and a diameter of less than 0.5 m (1 ft 8 in).

Implications on India

  •  This will help us in Indigenization of Defence equipments further in future.
  •  India became the fourth country to have successfully developed an anti-ballistic missile system, after United States, Russia, and Israel.
  •  It gives India strategic advantage in case of war with our neighbours.
  •  India becomes a major player in the Anti-Ballistic Missile system and may help other countries through technology transfer.
  •  It will increase Investments in the Defence sector.

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