After final lunar orbit manoeuvre for Chandrayaan-2, ISRO readies for separation of lander
Bengaluru, Sep 1: ISRO on Sunday said it has successfully performed the fifth and final lunar bound orbit manoeuvre for the Chandrayaan-2 spacecraft and was gearing up for separation of the lander from the orbiter on September 2.
All spacecraft parameters are normal, the Bengaluru headquartered space agency said after Sunday's manoeuvre on the spacecraft, that is currently in the lunar orbit for its rendezvous with the Moon.
"The final and fifth Lunar bound orbit manoeuvre for Chandrayaan-2 spacecraft was performed successfully today (September 01, 2019) beginning at 1821 hrs IST as planned, using the onboard propulsion system.
The duration of the manoeuvre was 52 seconds. The orbit achieved is 119 km x 127 km," the Indian Space Research Organisation said in an update.
It said the next operation is the separation of lander 'Vikram' from Chandrayaan-2 Orbiter, which is scheduled on September 2, 2019, between 1245 hrs and 1345 hrs (IST).
Following this, there would be two deorbit manoeuvres of lander 'Vikram' to prepare for its landing in the south polar region of the moon.
Vikram (with rover 'Pragyan' housed inside) is expected to touch down on the lunar surface on September 7, between 1.30 AM and 2.30 am.
ISRO said that after the lander's separation on Monday, two deorbit manoeuvres are scheduled for September 3 (9:00-10:00) and September 4 (3:00-4:00) respectively, before the powered decent on September 7.
ISRO Chairman K Sivan has said the proposed soft-landing on the Moon would be a "terrifying" moment as it is something ISRO has not done before, whereas the Lunar Orbit Insertion manoeuvre was successfully carried out during the Chandrayaan-1 mission.
In a major milestone for India's second Moon mission, the Chandrayaan-2 spacecraft had successfully entered the lunar orbit on August 20 by performing the LOI maneuver.
Chandrayaan-2 satellite began its journey towards the moon,leaving the earth's orbit in the dark hours on August 14, after a crucial manoeuvre called Trans Lunar Insertion (TLI) carried out by ISRO to place the spacecraft on "Lunar Transfer Trajectory".
India's Geosynchronous Satellite Launch Vehicle, GSLV MkIII-M1 had successfully launched the 3,840-kg Chandrayaan-2 spacecraft into the earth's orbit on July 22.
The spacecraft's health is being continuously monitored from the Mission Operations Complex at ISRO Telemetry,Tracking and Command Network in Bengaluru with support from Indian Deep Space Network antennas at Byalalu, near Bengaluru, the space agency has said.
Following the landing, the rover 'Pragyan' will roll out from lander 'Vikram' between 5:30-6:30 am on September 7 and carry out experiments on the lunar surface for a period of one lunar day, which is equal to 14 earth days.
The mission life of the lander is also one lunar day, while the orbiter will continue its mission for a year.
The orbiter carries eight scientific payloads for mapping the lunar surface and study the exosphere (outer atmosphere) of the Moon while the lander carries three scientific payloads to conduct surface and subsurface science experiments.
The rover carries two payloads to enhance the understanding of the lunar surface.
India's second lunar expedition would shed light on a completely unexplored section of the Moon, its South Polar region.
ISRO has said that the mission objective of Chandrayaan-2 is to develop and demonstrate the key technologies for end-to-end lunar mission capability, including soft-landing and roving on the lunar surface.
On the science front, the mission aims to further expand the knowledge about the moon through a detailed study of its topography, mineralogy, surface chemical composition, thermo-physical characteristics and atmosphere, leading to a better understanding of the origin and evolution of the moon, the space agency had said.
#ISRO
— ISRO (@isro) September 1, 2019
The final and fifth Lunar bound orbit maneuver for Chandrayaan-2 spacecraft was performed successfully today (September 01, 2019) at 1821 hrs IST.
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Speaker rules out discussion on Guv''s conduct amid K''taka Assembly standoff
Bengaluru (PTI): In an effort to end the logjam over the Governor's address that has stalled proceedings for the past week, Karnataka Assembly Speaker U T Khader on Wednesday ruled that legislators should not discuss Thaawarchand Gehlot or his conduct in the house, saying such debates send the wrong message to the public.
The House has witnessed repeated disruptions and adjournments since the session began on January 22 over the issue of the governor's conduct.
During his address to the joint sitting of the Karnataka legislature on January 22, Gehlot read out only three sentences from the 122-paragraph speech prepared by the state government.
The speech included criticism of the Centre for replacing the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA) with the Viksit Bharat–Guarantee for Rozgar and Ajivika Mission (Gramin) (VB-G RAM G), portions of which the governor declined to read.
Concluding his address in about two minutes, the governor left the house, triggering a commotion as Congress legislators attempted to gherao him and raised slogans.
While the opposition BJP accused the ruling Congress and its ministers of "insulting" the governor and demanded action, the treasury benches countered by claiming the governor had "insulted the National Anthem by leaving before it was played."
The house again witnessed heated arguments on the issue earlier in the day, leading to adjournment.
During the interruption, Khader held a meeting with ministers and opposition members to resolve the impasse.
When proceedings resumed, the speaker delivered his ruling.
Referring to the events of January 22 and the subsequent debate, Khader said the conduct and discussions had conveyed the wrong message to the public.
"Our conduct as members of this House and the opinions expressed must be in good taste and in accordance with constitutional provisions. They must uphold the dignity of the House and its members. We must introspect in this direction," he said.
He stressed the need for caution to ensure that such incidents are not repeated in the future.
"Let us end this matter here, continue the discussion on the motion of thanks to the governor, and refrain from discussing the governor or his conduct in this house," the speaker said.
Leader of the Opposition R Ashoka said the house should express regret over what he termed an "insult" to the governor.
Responding, Chief Minister Siddaramaiah said the situation would not have arisen had the governor read out the entire address.
"Asking the house to express regret is not appropriate. Why did the governor leave even before the National Anthem was played," Siddaramaiah asked.
BJP MLA S Suresh Kumar reminded Siddaramaiah that as Leader of the Opposition in 2011, he had asked then Governor Hansraj Bhardwaj to curtail his address.
Bhardwaj had subsequently placed the address on the table of the house, requesting members to treat it as read.
Siddaramaiah said the situation in January 2011 was different from the present one.
The debate grew intense, leading to another adjournment of the house.
