22 July 2019 Current Affairs: Indian Space Research Organisation (ISRO)planned to launch India's second mission Chandrayaan -2 to the Moon at 2.43 pm today on July 22 

About Chandrayaan - 2

Chandrayaan-2 planned to go the Moon's south polar region. The main aim is to explore its main surface for the signs of water and to find out the new form of energy. The 978-crore cost spent while the launch process 
The second launchpad at the Satish Dhawan Space Center, Sriharikota, in Andhra Pradesh. The countdown announced on Sunday. It is a 20-hour countdown. The launch began at 6.43 pm.
India's second Moon odyssey launched 11 years after ISRO's successful first lunar mission Chandrayaan 1

About Pragyan Rover

Chandrayaan 2's Rover is a 6-wheeled robotic vehicle named Pragyan. The meaning of Pragyan 'wisdom' in Sanskrit. They can travel up to 500 m (half-a-km) They leverage solar energy for its functioning. 

Vikram lander

The Lander of Chandrayaan 2 is named after Dr Vikram A Sarabhai. It is designed in such a manner to function for one lunar day.It is equivalent to about 14 Earth days. The lander has a capability to communicate with Indian Deep Space Network at Byalalu near Bangalore. The Lander is designed to execute a soft landing on the lunar surface.

Technological challenges of the mission 

  • The propulsion system consists of throttle engines to ensure landing.
  • The landing is carried at low touch down the velocity
  • The Mission management includes propellant management at various stages engine burns orbit and trajectory design
  • The Lander Development consists of Navigation, guidance, and control, sensors for navigation and hazard avoidance, communication systems and lander leg mechanism for a soft landing. The Roll down mechanism, roving mechanism development and testing of power systems, thermal systems, communication and mobility systems.

Plan of Chandrayaan 2 Launch

Chandrayaan-2 planned to be launched on the 15th of this month. 
A technical snag detected less than an hour before its scheduled lift-off, forcing the mission. The loss of seven days due to the delay in the launch and the flight duration of Chandrayaan-2 from the earth to the moon has been reduced from 54 days to 48 days by tweaking the flight path. 
Its lander will descend on the moon by September 7.
The scientists perform fifteen crucial maneuvers to navigate the probe from an earth-bound elliptical orbit to the surface of the moon.