सामयिक विषय: Defense/Science Short Notes

Prithvi-II missile successfully test-fired

Prithvi-II missile successfully test-fired

Question: What is the strike range of Prithiv-II missile?
(a) 200 Km
(b) 250 Km
(c) 300 Km
(d) 350 Km
Ans: (d)
Related Fact :

• On June 2, 2017 India successfully test-fired its indigenously developed nuclear-capable Prithvi-II missile from a test range in Odisha as part of a user trial by the Army.
• The trial of the Prithvi-II missile was carried out from a mobile launcher from launch complex-3 of the Integrated Test Range) at Chandipur near Balasore in Odisha.
• Prithvi –II is a surface to surface missile and has a strike range of 350 km.
• The Prithvi-II missile is capable of carrying 500 kg to 1,000 kg of warheads and is thrusted by liquid propulsion twin engines. It uses advanced inertial guidance system with manoeuvring trajectory to hit its target with precision and accuracy.
• Prithvi-II was randomly chosen for test from the production stock. Launch activities were carried out by the specially formed strategic force command and monitored by the scientists of the Defence Research and Development Organisation (DRDO) as part of training exercise.
• The missile trajectory was tracked by the DRDO radars, electro-optical tracking systems and telemetry stations located along the coast of Odisha.

Good to Know:
Prithvi-II missile was developed under the Integrated Guided Missile Development Programme (IGMDP). This programme was conceived by renowned scientist and late former President of India, Dr. APJ Abdul Kalam to enable India attain self sufficiency in the field of missile technology. This programme was approved by the government on July 26, 1983. The missiles developed under IGMDP were:

• Short range surface-to-surface missile (code-named Prithvi)
• Intermediate range surface-to-surface missile (code-named Agni)
• Short range low-level surface-to-air missile (code-named Trishul)
• Medium range surface-to-air missile (code-named Akash)
• Third-generation anti-tank missile (code-named Nag).

The Agni missile was initially conceived in the IGMDP as a technology demonstrator project in the form of a re-entry vehicle, and was later upgraded to a ballistic missile with different ranges. As part of this program, the Interim Test Range at Balasore in Orissa was also developed for missile testing.
Variants of Prithvi Missile: 

Missile Warhead Payload (kg) Range (km) Fuel/Stages Weight (kg) In service
Prithvi-I Nuclear, HE, submunitions, FAE, chemical 1,000 150 Single stage liquid 4,400 1988
Prithvi-II Nuclear, HE, submunitions, FAE, chemical 350–750 350 Single stage liquid 4,600 1996
Prithvi-III Nuclear, HE, submunitions, FAE, chemical 500–1,000 350–600 Single stage solid 5,600 2004


SIMBEX-17 maritime bilateral exercise


Question: SIMBEX-17 is being organized from 18th to 24th May, 2017 between navies of Singapore and India in…
(a) Indian Ocean
(b) South China Sea
(c) Bay of Bengal
(d) Arab Sea
Ans: (b)
Related Fact :

  • Singapore-India Maritime Bilateral Exercises, ‘SIMBEX-17’, is being organized in the South China Sea from 18th to 24th May, 2017.
  • Indian Naval Ships Shivalik, Sahyadri, Jyoti and Kamorta and one P8-I Maritime Patrol and Anti-Submarine Warfare Aircraft are participating in the exercise. Singapore Navy is represented by RSN Ships Supreme, Formidable and Victory and Maritime Patrol Aircraft Fokker F50 in addition to the RSAF F-16 aircraft.
  • The scope of the current exercise includes wide-ranging professional interactions during the Harbor Phase scheduled from 18 May to 20 May and a diverse range of operational activities at sea during the Sea Phase to be held from 21 May to 24 May.
  • Bilateral cooperation between Singapore and India was first formalized when RSN ships began training with the Indian Navy in 1994.
  • This year’s edition of SIMBEX-17 being held in the South China Sea is the 24th in the series and is aimed to increase interoperability between the RSN and IN as well as develop common understanding and procedures for maritime security operations.
  • The two navies share a long standing relationship with regular professional interactions that include exchange programs, staff talks and training courses.


Spyder surface-to-air missile test fired

Spyder surface-to-air missile test fired

Question: India recently test fired a surface-to-air missile ‘Spyder’. What does the word ‘spyder’ stand for?

(a)Surface-to-air PYthon and DERby
(b)Surface-to-air PAnther and DERby
(c)Surface-to-air PYthon and SPyder
(d)None of the above
Ans (a)
Related facts:

  • On May 11, 2017, India successfully test fired a surface-to-air missile ‘Spyder’ from a test range in Odisha as part of missile launch practice of a series of tests of the short-range quick reaction.
  • Spyder was test fired from a mobile launcher at launch complex 3 of the Integrated Test Range (ITR) at Chandipur.
  • It targeted a pilot-less target aircraft.
  • Spyder (Surface-to-air PYthon and DERby) is an acquired missile system from Israel.
  • It is a short-range, quick reaction surface-to-air missile.
  • It can be used to neutralise enemy targets up to a distance of 15 km and at height between of 20-to-9,000 metres.
  • However, it is shorter than India’s indigenously developed surface-to-air ‘Akash’ missile, which has a 25 km strike range.




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