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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LPG supply to be cut off if households refuse PNG switch where available: Govt order
New Delhi (PTI): The government has mandated that cooking gas LPG supply to households will be discontinued if consumers fail to switch to piped natural gas where such connectivity is available, under a new order aimed at accelerating gas network expansion and reducing reliance on a single fuel.
As India grapples with an LPG shortage due to the war in West Asia disrupting supplies from key sources, the government is pushing households and commercial users to switch to piped natural gas (PNG) -- a more convenient alternative that is both domestically produced and sourced through diversified supply.
PNG is continuously supplied to kitchen burners through pipelines, eliminating the need to book refills.
The Ministry of Petroleum and Natural Gas has notified the Natural Gas and Petroleum Products Distribution (Through Laying, Building, Operation and Expansion of Pipelines and Other Facilities) Order, 2026, aimed at accelerating pipeline infrastructure, easing approvals and promoting a shift from LPG to PNG to strengthen energy security.
The order issued on March 24 states that LPG supply "shall cease after three months" if a household does not opt for PNG despite availability. The provision, however, allows continuation where it is "technically infeasible" to provide a piped connection, subject to a no-objection certificate.
The move is aimed at freeing up LPG supplies from areas with pipeline connectivity and diverting them to regions lacking such infrastructure, while promoting "fuel diversification" amid global supply disruptions, including damage to liquefaction facilities in the Gulf and the continued blockage of the Strait of Hormuz.
Commenting on the order, Oil Secretary Neeraj Mittal in the post on X said "a crisis (has been) turned into an opportunity" through the ease of doing business reforms.
The order, issued under the Essential Commodities Act, seeks to fast-track pipeline infrastructure by easing approvals, standardising charges and ensuring time-bound permissions.
To facilitate rapid rollout, public authorities must grant right of way or permissions within prescribed timelines, failing which approvals will be deemed granted. The order also bars authorities from imposing charges beyond those specified.
In housing areas, entities controlling access must grant permissions within three working days, and last-mile PNG connectivity is to be provided within 48 hours. Applications for pipeline connectivity in such areas cannot be rejected.
The order further provides for intervention by designated officers with powers akin to a civil court to resolve disputes over land access and grant right of way where necessary.
Authorised entities must begin laying pipelines within four months of approval or face penalties, including possible loss of exclusivity.
The Petroleum and Natural Gas Regulatory Board (PNGRB) has been designated as the nodal agency to monitor implementation, including tracking approvals, rejections and compliance.
In case the right of way or right of use permission to lay pipeline to residences for supply of PNG is not granted by the entities that control access to the housing complex, a notice will be issued and three months thereafter oil marketing companies will stop supply of LPG.
Listing out "consequences of households not applying for and obtaining PNG connection when notified by authorised entity" that has laid a pipeline to supply such fuel, it said, "The LPG supply to such an address shall cease after three months from the date of the communication."
"The supply of LPG to a household shall not cease, if the authorised entity issues a no-objection certificate (NOC) on the ground that it is technically infeasible to provide a piped natural gas connection or gas supply to such household," it said.
The authorised entity shall maintain records of the reasons for such technical infeasibility and withdraw the NOC as and when it is able to provide and operationalise the piped gas connectivity to such households.
