सामयिक विषय: Defense/Science Short Notes

US Navy Tests World’s First Drone-Killing Laser Weapons System

World’s First Drone-Killing Laser Weapons System

Question: Navy of which of the following countries has recently successfully tested World’s First Drone-Killing Laser Weapons System?
(a) China
(b) America
(c) Russia
(d) France
Answer- (b)
Related facts

  • On July 18, 2017, the S. Navy tested the world’s first Drone-Killing Laser Weapons System.
  • During this trial, the laser weapon system deployed on board the USS Ponce amphibious transport ship successfully destroyed a drone(an unnamed aerial vehicle (UAV) and moving surface targets).
  • It is the first fully penetrating capability system to the target at the surface and in the air.
  • This weapon releases photons, elementary particles which transmit light, at the speed of light silently hitting their target and burning it to a temperature of thousands of degrees.
  • This Laser active Weapon System can move at the speed of light, which is 50,000 times the speed of an incoming intercontinental ballistic missile.

Reference:
http://edition.cnn.com/2017/07/17/politics/us-navy-drone-laser-weapon/index.html
http://thediplomat.com/2017/07/us-navy-tests-worlds-first-drone-killing-laser-weapons-system/
http://www.dailymail.co.uk/sciencetech/article-4706228/US-military-begins-live-testing-drone-killing-laser.html

Super-flexible and strong artificial silk developed

Super-flexible and strong artificial silk developed

Question: Scientists from which of the following countries have developed Super-flexible and strong artificial silk?
(a) Harvard University
(b) Cambridge University
(c) Melbourne University
(d) Stanford University
Answer- (b)
Related facts:

  • According to the reports published on July 10, 2017, a team of scientist (architects and chemists) from the University of Cambridge has developed super-stretchy and strong fibers.
  • This fiber is composed of water (98%) and hydrogel (2%) made of silica and cellulose.
  • The fibres are pulled from the hydrogel, forming long, extremely thin threads is a few millionths of a metre in diameter.
  • After the hydrogel is stretched for roughly 30 seconds, the water evaporates, leaving a strong fibre.

Reference:
http://www.cam.ac.uk/research/news/green-method-developed-for-making-artificial-spider-silk
http://www.thehindu.com/sci-tech/technology/super-flexible-and-strong-artificial-silk-developed/article19289967.ece

Pakistan successfully test-fires Hatf-IX Nasr

Nasr Missile

Question: NASR missile is also known by which of the following names?
(a) Hatf-8
(b) Hutf-9
(c) Ababil
(d) Hutf-10
Answer- (b)
Related facts:

  • On July 5, 2017, Pakistan’s Strategic Plans Division (SPD) successfully test-fired an improved version of the Nasr short-range ballistic missile (SRBM).
  • The other name of this missile is ‘Hatf-9’.
  • This is a surface-to-surface missile (SSM).
  • Thismissile has a strike range of 60 to 70 km.
  • The Hatf 9 is also believed to be a nuclear capable missile, but it could potentially carry an HE or sub munitions payload as well.

Reference:
http://quwa.org/2017/07/05/pakistan-test-fires-improved-nasr-short-range-ballistic-missile/
https://missilethreat.csis.org/missile/hatf-9/
https://en.wikipedia.org/wiki/Nasr_(missile)
https://www.siasattimes.com/2017/07/05/pakistan-successfully-test-fires-hatf-ix-nasr/

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