Tag: India

NASA to fly Indian astronaut to ISS next year

During meetings in India between NASA and ISRO officials, instigated by administrator Bill Nelson’s visit this week, the mission details for the flight of an Indian astronaut to ISS in 2024 are now being worked out.

A Nasa delegation led by Nelson held a meeting with minister of state for science & technology Jitendra Singh on Tuesday. “I had a discussion with the minister on what the Indian astronaut would do on the space station. And the two of us talked about the fact that things that are important to India in scientific research, the Indian astronaut ought to have that as a choice to do. If there is a particular part of research that he or she would be interested in, then I want to encourage that,” Nelson later said at a media interaction. “Nasa will help train the Indian astronaut to fly to ISS by end of 2024. Those details are being worked out. Indian Space Research Organisation (Isro) will announce that,” Nelson said.

Though this plan for NASA to fly Indian astronaut to ISS next year was first announced in June, it was overshadowed by India’s decision at that time to sign the Artemis Accords.

It is also important to recognize that the real arrangements are all being done by others, that Nelson and the India government officials are merely there to get their faces on television.

If this flight happens as planned, next year could be very exciting for India’s manned space program, since it also hopes to fly its own manned mission at that time.

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Eutelsat-OneWeb gets license approval in India

Less than two weeks after SpaceX obtained regulatory approval to offer its Starlink system in India, Eutelsat-OneWeb (newly merged) has now gotten its own approval.

Eutelsat-OneWeb is half owned by an Indian investment firm, so it is no surprise it obtained this approval soon after SpaceX. The two companies will now be competing aggressively for business in this giant country, whose technological capabilities has been renewed in recent years by the abandonment of a socialist/communist government for a leadership focused on encouraging freedom, capitalism, and competition.

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India now plans robotic lunar sample return mission

Following the successful landing of Vikram on the Moon, officials of India’s space agency ISRO have announced it is considering a much more ambitious follow-up, Chandrayaan-4, that will not only land on the lunar surface with a much larger rover, it will also dig up some samples and return them to Earth.

The spacecraft will travel to the moon, land, collect samples, and then connect to another module in space. The module will then return to Earth orbit. As the two modules approach Earth, they will separate, with one part returning to Earth and the other will keep orbiting the planet. Desai described the mission as ambitious, stating, “Hopefully, in the next five to seven years, we will meet the challenge of bringing samples from the moon.”

For return to Earth, Desai said that the mission would need two launch vehicles containing four modules (Transfer module, Lander Module, Ascender Module and Re-entry module). RM and TM would be Parked in the lunar orbit and two will go down from which Ascender Module will get separated from lander module and would collect the sample.

If India does this mission, while also completing its first manned mission during that time frame, it will place itself in direct competition with China and the U.S., and in fact will be getting close to matching both in capabilities.

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November 16, 2023 Quick space links

Courtesy of BtB’s stringer Jay, who notes it has been “a slow news day. I guess everyone is waiting to see SpaceX launch.” For me this has been good, as the day has mostly been tied up with doctors (nothing serious).

 

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India releases on-board camera views during its Gaganyaan launch abort test

India’s space agency ISRO today released the on-board camera views taken during its Gaganyaan launch abort test on October 21, 2023.

The test was a complete success, and the footage shows each step clearly, from launch to stage separation to deployment of parachutes.

ISRO is still targeting 2024 for the first manned Gaganyaan mission, which will carry two to three astronauts into orbit for three to seven days. To meet that target however will require a lot of fast work, as the agency intends to fly three separate unmanned orbital missions of the Gaganyaan capsule prior to putting humans in it. More likely the manned mission will happen in 2025.

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Gaganyaan abort test flight flies successfully after short delay

When I went to bed last night India’s Gaganyaan abort test flight had been cancelled due to a launch abort at T-0, with the live stream ending and an expectation that engineers would need at least another day to fly.

When I woke up it turned out that ISRO behaved more like SpaceX than a government agency. It quickly figured out what was wrong, recycled the countdown, and two hours later successfully flew the test of its launch abort rescue system for its manned Gaganyaan capsule.

Indian Space Research Organisation (ISRO) successfully executed the Test Flight Abort Mission, for the Gaganyaan mission on Saturday after the first test flight was aborted at 8:45 am due to a problem in the engine ignition. ISRO Chief S Somanth said the planned lift off the TV-D1 rocket could not happen following an anomaly that will be analysed. He said that the engine ignition of the TV-D1 rocket did not happen over time.

The space agency then said that the errors have been identified and corrected and the second launch was scheduled for 10:00 Hrs today.

And at 10 am, ISRO successfully launched the test vehicle from Sriharikota today. Chairman Somanath expressed happiness and said, “I am very happy to announce the successful accomplishment of Gaganyaan TV-D1 mission”.

The test rocket launched, the abort system separated from the rocket as planned, the capsule was released from the abort system, its parachutes then opened, and the capsule then safely splashed down in the Bay of Bengal about ten miles off the coast, where it was recovered successfully.

ISRO plans a second launch abort test prior to flying the actual manned mission, but at this moment it appears very close to being ready for a manned mission in 2024, its present goal.

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India’s Gaganyaan launch abort test aborts at T-0

India’s attempt today to test the launch abort system to be used to safely propel its manned Gaganyaan capsule away from a failing rocket aborted at T-0.

They need to take the spacecraft back to the assembly building in order to figure out what went wrong, so the next attempt will likely be delayed at mininum several weeks. UPDATE: That’s what the head of ISRO said at the end of this live stream, but that is not what happened. See new post above.

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India rocket startup Agnikul raises $26.7 million in new private investment capital

The new colonial movement: The Indian rocket startup Agnikul has now raised an additional $26.7 million in private investment capital, bringing its total cash on hand now to about $40 million.

The company hopes to complete the first suborbital launch of its Vikram-S rocket in mid-November. If successful, it will be the second private rocket startup in India to do it, joining Skyroot, which did its first suborbital test flight last year. Both companies plan orbital versions of these rockets, and are also likely bidding to take over the SSLV (Small Satellite Launch Vehicle) rocket from India’s space agency ISRO. The Modi government is offering to literally give it to a private company to operate for profit.

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India schedules Gaganyaan launch abort test for October 21st

India’s space agency ISRO has now scheduled the first unmanned launch abort test of its Gaganyaan manned capsule for October 21, 2023.

The test Crew Module (CM), according to the statement, will be akin to the pressurized module that’ll hold crew members during their ascent to space — this version, however, will be unpressurized. It will be launched via a single-stage liquid rocket specifically developed for this mission that will simulate an abort scenario; the true CM, by contrast, will ride atop a 143-foot-tall (43.5-meter) Launch Vehicle Mark-3 (LVM3) rocket with a solid stage, liquid stage and cryogenic stage. The latter recently received human safety certifications, R. Hutton, project director of the Gaganyaan mission, said during a conference last month.

At present ISRO is targeting 2024 for the first manned mission, but that target date remains very uncertain.

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India’s government confirms its policy to transition to private enterprise in space

Capitalism in space: In a presentation at the International Astronautical Congress in Baku yesterday, one high official from India confirmed the Modi’s government’s new policy to shift is space industry from government-controlled to privately-run.

“A transition is happening in India. We are moving from ISRO [India’s space agency] being the sole player in the space sector to the private sector taking on a more meaningful role,” Pawan Goenka, chairman of the Indian National Space Promotion Authorization Center (IN-SPACe), said at a forum at the 74th International Astronautical Congress in Baku, Oct. 5.

The Indian government approved the Indian Space Policy 2023 in April this year, which follows a number of developments in recent years. “What the Indian Space Policy did was take everything to do with space — satellite communication, remote sensing, space operations, transportation, navigation, everything — and put it into one comprehensive document only 12 pages long,” Goenka said. [emphasis mine]

The highlighted words will sound very familiar to regular readers of this webpage. It describes what NASA has been doing for the past decade, and sums up precisely the recommendations put forth in my 2017 policy paper, Capitalism in Space.

IN-SPACe, the agency Goenka heads, has been tasked with fulfilling this task, and is thus in a direct turf war with ISRO, the space agency that has controlled all of India’s space effort for a half century. How that turf war will play out remains uncertain, though at present IN-SPACe and the Modi government appear to be winning.

It would likely help India’s private industry if the Modi government would make public that 12-page policy statement. So far it has either not released the text, or if it has it has made it impossible for me to find it.

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India successfully tests upgraded upper stage engine for manned mission

India’s space agency ISRO has now successfully completed full power static fire engine tests of a more power version of the upper stage engine used by the most powerful version of its GSLV rocket, the LVM3, thus preparing it to launch that nation’s first manned mission, dubbed Gaganyaan.

On September 22, 2023, this test was conducted at the state-of-the-art test facility located at IPRC, Mahendragiri. During this test, the CE20 engine operated at the coveted 22-tonne thrust level for a duration of 670 seconds. Both the engine and the testing facility performed flawlessly, meeting all the performance parameters.

ISRO is still targeting 2024 for the first manned mission, but that target remains somewhat uncertain, though less so as one-by-one the agency completes these performance tests successfully.

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India’s Aditya-L1 solar telescope initiates some science observations

According to India’s space agency ISRO, its Aditya-L1 solar telescope has begun science observations with one instrument, even as it continues its journey to its final position at L1, one million miles from the Earth.

The activation of STEPS occurred on September 10, 2023, at a distance exceeding 50,000 km from Earth. This distance equates to more than eight times the Earth’s radius, placing it significantly beyond the Earth’s radiation belt region. Following the successful completion of essential health checks for the instrument, the data collection process continued until the spacecraft had travelled beyond the 50,000 km mark from Earth.

All units of STEPS are currently operating within normal parameters. A graphical representation illustrates the measurements, showcasing fluctuations in the energetic particle environment within Earth’s magnetosphere, which were collected by one of the instrument’s units.

It is expected Aditya-L1 will reach L1 in January, where it will begin round-the-clock observations of the Sun, in parallel with NASA’s Soho telescope, which has been at L1 since the 1990s.

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23 Indian companies bid for ownership of ISRO’s SSLV rocket

In the Modi government’s push to transition its aerospace industry from one controlled by its space agency ISRO to one that is controlled by no one and is instead a competitive commercial market owned by private companies, it had recently proposed transferring ownership of ISRO’s SSLV rocket to a private company, and requested applications from private companies interested in doing so.

It now appears that twenty-three Indian companies have entered their names in the hat.

Chairman of Indian National Space Promotion and Authorisation Centre (IN-SPACe) Pawan K Goenka said that they are keen to see how the private sector uses the Small Satellite Launch Vehicle (SSLV) technology. “There has been a tremendous response, 23 companies have (so far) shown interest in applying for this technology. Of course only one of them will get it,” he said.

IN-SPACe, an autonomous nodal agency under the Department of Space (DOS), formed in 2020 to promote, enable, authorise and supervise non-government entities (NGEs) to undertake space activities, had in July floated an Expression of Interest (EoI) for transfer of technology (ToT) of SSLV with the last date to respond to it being September 25.

“Technology transfer is something we are working on very aggressively, because we really want to see how ISRO’s technology is leveraged by private sector. A lot is happening in that area and the biggest one is of course SSLV technology transfer, where we are transferring the launch vehicle lock, stock, and barrel completely to the private sector,” Goenka said.

As there is still several weeks left before the deadline, it is possible other companies will submit offers. Whichever company gets the rocket will immediately become a significant player in the global launch market, able to offer a very cost effective rocket for commercial launches. It will certainly be able to match Rocket Lab right off the bat.

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Engineers had Vikram do short flight hop prior to shutting down

Indian engineers revealed today that prior to putting the Vikram lander to sleep for the long lunar night, they had the lander use its rocket engines to do a short up and down flight. From the first link:

“On command it (Vikram lander) fired the engines, elevated itself by about 40 cm as expected and landed safely at a distance of 30 to 40 cm away,” ISRO said in an update on ‘X’.

Before doing the hop engineers stored Vikram’s instruments and rover ramp, then redeployed them afterward to gather a tiny bit of new data before putting everything into hibernation.

The hop test proved that Vikram’s engines could be restarted even after being on the Moon for almost two weeks, and thus could potentially be used on a future sample return mission. It also suggested a future mission could choose to change its landing site periodically by use of its landing engines.

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Engineers place Pragyan into sleep mode

With lunar sunset looming, engineers have completed all work on both the lander Vikram and the rover Pragyan and have prepared Pragyan as best as possible to survive the long 14-Earth-day long lunar night.

Currently, the battery is fully charged. The solar panel is oriented to receive the light at the next sunrise expected on September 22, 2023. The receiver is kept on.

All data from Vikram’s instruments has been transmitted back to Earth, through the rover. It appears that the mission has been using the rover has the main communications relay, not the lander. It also appears there is no expectation of the lander surviving the lunar night.

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Pragyan rover moves more than 300 feet away from Vikram

Map of Pragyan's traverse
Click for original image.

India’s space agency ISRO today released a map, shown to the right, that shows the entire traverse so far completed by its Pragyan rover in the Moon’s high southern latitudes. It has so far traveled more than 100 meters, or 300 feet, and continues to operate as planned.

The part of the traverse just south of the Vikram lander is where the lander filmed the rover doing several quick maneuvers and a 360 degree spin as engineers tested its operation before heading out on a longer journey. The rover’s image of the crater that the rover avoided, though released first, was actually taken afterward, after the rover had moved to the west.

Lunar sunset is in two days. Though engineers are preparing both Vikram and Pragyan for hibernation during that long lunar night, neither was designed to survive that extreme environment.

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India successfully launches its first solar observation satellite

India’s space agency ISRO tonight (September 2, 2023 in India) successfully used its PSLV rocket with six strap-on boosters to place in orbit its first solar observation satellite, Aditya-L1, lifting off from its coastal Sriharikota spaceport.

The spacecraft will eventually maneuver itself to the L1 point about one million miles closer to the Sun, where it will make continuous observations of the star’s visible hemisphere, using seven different instruments. Its observations will supplement those of the SOHO solar observatory (also located at the L1 point), which was launched in 1995 and is long overdue for replacement, or at least some redundancy.

For India, this was the seventh launch in 2023, which ties its previous annual launch high achieved in both 2016 and 2018. The country however has three more launches tentatively scheduled for this year, though none has as yet a specific launch date.

The leaders in the 2023 launch race:

60 SpaceX
38 China
12 Russia
7 Rocket Lab
7 India

In the national rankings, American private enterprise still leads China in successful launches 69 to 38. It also leads the entire world combined, 69 to 62, while SpaceX by itself now trails the rest of the world (excluding American companies) 60 to 62. SpaceX however has launches scheduled for September 2nd and 3rd, so these numbers are likely to change.

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Vikram takes movie of Pragyan rover as it roves

Pragyan as seen by Vikram
Click for movie.

Using one of Vikram’s lander cameras, engineers have produced a short movie of India’s Pragyan rover as it rotated to avoid a small crater about ten feet ahead.

The picture to the right is from that 16-second movie, near its end. It appears that the engineers operating Pragyan were unhappy with almost any route ahead from its present position, as they rotated Pragyan almost 360 degrees, and even attempted forward motion at one point and then resumed rotation.

It is not clear if any of the craters visible in this picture are the crater that caused the detour. The movie however does provide a sense of scale. Pragyan is small, but it is able to maneuver easily using its six wheels.

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Both Vikram and Pragyan functioning as planned on the Moon

Pragyan on the Moon
Click to see full movie.

According to tweets from India’s space agency ISRO, both the Vikram lander and the Pragyan rover are functioning as planned on the lunar surface, with the rover successfully activating its two science instruments.

The image to the right, taken by Vikram, shows the rover as it completed its roll down the ramp onto the lunar surface. This is a screen capture from a movie showing that roll down, which you can see by clicking on the picture. Since then it has moved another 26 feet from the lander.

I must add once again that Vikram did not land “on the south pole”, as too many so-called news organizations have been falsely claiming. It landed at about 69 degrees south latitude, quite a distance from that pole, in a flat region with no permanently shadowed craters. It is not specifically looking for water, though its instruments might help explain the orbital data that suggests there are areas on the surface of the Moon where hydrogen is somehow present.

If so many news outlets can’t seem to get these very basic facts about this mission correct, one must ask what else do they get wrong routinely? I don’t ask, because I always assume their information is wrong, check it constantly, and find repeatedly that they get numerous basic facts incorrect, especially when it comes to reporting on politics.

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India’s Pragyan rover has successfully been deployed on the lunar surface


Click for interactive map.

According to a tweet from India’s space agency ISRO late yesterday, the Pragyan rover has successfully rolled down its ramp and is now deployed on the lunar surface.

No further updates have yet been released. According to ISRO’s mission webpage the instruments on both Vikram and Pragyan are as follows:

Lander payloads: Chandra’s Surface Thermophysical Experiment (ChaSTE) to measure the thermal conductivity and temperature; Instrument for Lunar Seismic Activity (ILSA) for measuring the seismicity around the landing site; Langmuir Probe (LP) to estimate the plasma density and its variations. A passive Laser Retroreflector Array from NASA is accommodated for lunar laser ranging studies.

Rover payloads: Alpha Particle X-ray Spectrometer (APXS) and Laser Induced Breakdown Spectroscope (LIBS) for deriving the elemental composition in the vicinity of landing site.

Pragyan’s two spectroscopes are likely similar to instruments on Curiosity and Perseverance on Mars, and allows some good surface analysis. Without a scoop however there will be no analysis of anything below the ground, unless the rover can upend a rock using its wheels.

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India successfully lands Vikram on the Moon


Click for interactive map.

India this morning successfully placed its Vikram lander, carrying its Pragyan rover, on the surface of the Moon in the high southern latitudes.

I have embedded the live stream below, cued to just before landing.

The next challenge is getting Pragyan to roll off Vikram, and spend the next two weeks exploring the nearby terrain. The mission of both it and Vikram is only planned to last through the daylight portion of the 28-day-long lunar day, so it is not expected for either to survive the lunar night. Both will make observations, but the main purpose of this mission has already been accomplished, demonstrating that India has the technological capability to land an unmanned spacecraft on another planet. That the landing was in the high southern latitudes added one extra challenge to the mission.

» Read more

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Chandrayaan-3 reaches final lunar orbit for landing


Click for interactive map.

India’s Chandrayaan-3 spacecraft completed its final lunar orbital engine burn today, placing it in the correct orbit to release the lander Vikram, carrying the Pragyan rover.

The release is scheduled for tomorrow, with the landing targeting August 23, 2023. This will be India’s second attempt to softland an unmanned probe on the Moon. The Vikram lander of Chandrayaan-2 failed in 2019 during its final engine burn above the surface, crashing thereafter. Engineers at India’s space agency ISRO spent several years upgrading that lander to better insure this new attempt would succeed.

The lander has been given more ability to manoeuvre during the descent, the mission allows for a bigger 4 km x 2.4 km area for landing, more sensors have been added, one of the thrusters has been removed, and the legs of the lander have been made sturdier to allow for landing even at slightly higher velocity. More solar panels have also been added to ensure that the mission can go on even if the lander does not face the sun. More tests to see the capability of the lander in different situations were carried out to make Chandrayaan-3 more resilient.

Both Vikram and Russia’s Luna-25 lander, scheduled for touchdown on August 21, will land in the high southern latitudes of the Moon, at about 70 degrees. They are not going to the Moon’s south pole, as many news reports claim.

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India approves new spaceport for private launches of SSLV rocket

map of India's two spaceports
India’s two spaceports

The Modi government in India has now approved the use of its new spaceport in Kulasekarapattinam by private operators, including the private operator who wins control of the SSLV rocket that was developed by ISRO, India’s space agency.

On the new launch pad that ISRO is building at Kulasekarapattinam in Thoothukudi district along the coast in Tamil Nadu, SIRO Chairman S Somanath said that nearly 99 per cent of the 2,000 acres has been transferred to ISRO by the Tamil Nadu government. “It takes at least two years to become fully functional after the commencement of the construction work. However, we will be able to conduct some sub-orbital launches there,” he added.

In December about 80% of that land had been purchased, so the government is now close to owning everything it needs.

Though the government is accepting bids from private companies to operate SSLV, it is not clear if that will be an exclusive right, or whether ISRO will continue to do its own launches. Either way, this new spaceport is being designed to enable private operators to launch from it.

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ISRO releases first images of the Moon from Chandrayaan-3

The Moon as seen by Chandrayaan-3

India’s space agency ISRO yesterday released the first images taken of the Moon by Chandrayaan-3, soon after entering lunar orbit.

The picture to the right is a screen capture from the short movie the agency compiled from those images, available at the link. The pictures were taken on August 5th, during the engine burn that put the spacecraft into lunar orbit. A solar panel can be seen on the left, with the cratered lunar surface to the right.

Chandrayaan-3 is presently undergoing a series of engine burns to lower its orbit in preparation for a planned August 23rd lunar landing in the high southern latitudes of the Moon.

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Chandrayaan-3 enters lunar orbit


Click for interactive map.

India’s Chandrayaan-3 spacecraft today successfully entered lunar orbit, where it will spend the next week or so slowly lowering its orbit in preparation for a landing attempt by its Vikram lander on August 23rd.

Chandrayaan-3 began a roughly 30-minute burn around 9:30 a.m. Eastern, seeing the spacecraft enter an elliptical lunar orbit, the Indian Space Research Organization (ISRO) stated via social media. “MOX, ISTRAC, this is Chandrayaan-3. I am feeling lunar gravity,” ISRO Tweeted. “A retro-burning at the Perilune was commanded from the Mission Operations Complex (MOX), ISTRAC, Bengaluru.”

The spacecraft will gradually alter its orbit with a burn to reduce apolune Sunday, Aug. 6. It will settle into a 100-kilometer-altitude, circular polar orbit on Aug. 17. From here, the Vikram lander will separate from the mission’s propulsion module and enter a 35 x 100-km orbit in preparation for landing.

If the landing attempt is successful, the Pragyam rover will roll off Vikram to operate for about two weeks on the lunar surface in the high southern latitudes of the Moon.

Meanwhile, the Russian lander Luna-25 will launch on August 10th. Since the rocket that launches it and engines it carries are larger than that used by Chandrayaan-3, it will likely land in Boguslawsky crater, before Vikram touches down nearby.

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Chandrayaan-3 is now on its way to the Moon

Chandrayaan-3's mission profile

According to a tweet from India’s space agency, ISRO, engineers have successfully completed the trans-lunar-injection burn that has now sent its Chandrayaan-3 lunar lander/rover on its way to the Moon.

As shown in mission’s profile graphic to the right, the spacecraft spent the last two weeks in Earth orbit. repeatedly raising its orbit to reduce the amount of fuel necessary to send it to the Moon. It will now take about five days traveling to the Moon, entering its orbit on August 5th. It will then spend about two weeks lowering that orbit slowly, until it is in the proper orbit for the descent to the surface on August 23, 2023.

If all goes well, its Vikram lander will gently place the Pragyan rover in the high southern latitudes, where it will function for about two weeks, or during the daylight portion of one lunar day.

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India officials confirm Australian beach debris comes from an old PSLV rocket

Officials from India’s space agency ISRO have confirmed that the large metal cylinder that washed up on an Australian beach on July 16th came from an old PSLV rocket, which which one remains at present unknown.

“We have concluded the object located on a beach near Jurien Bay in Western Australia is most likely debris from an expended third-stage of a Polar Satellite Launch Vehicle (PSLV). The PSLV is a medium-lift launch vehicle operated by ISRO,” the space agency tweeted.

A day after the object surfaced on July 16, the ISRO had confirmed to HT that the object was a part of PSLV upper stage but an old one. ISRO chairman S Somanath had said, “This is a part of PSLV upper stage but an old one. It is not from a recent mission, it must be older.” PSLV’s third stage is a solid rocket motor that provides upper stages high thrust after the atmospheric phase of launch.

If this came from an upper stage, it means it survived re-entry far better than expected, and then survived floating the the ocean for a long period. Since it does not appear as yet that the agency has determined which launch the object came from, we do not know how long.

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India’s PSLV rocket places seven satellites into orbit

India today (July 30th in India) successfully used its PSLV rocket to put seven satellites into orbit, launching from its coastal Satish Dhawan spaceport. This was the first time since India panicked over COVID and shut down in 2020 that the country has managed two launches within one month.

The leaders in the 2023 launch race:

51 SpaceX
30 China
9 Russia
6 Rocket Lab (with a launch planned for later tonight. Live stream here— Launch aborted at T-0)
6 India

American private enterprise still leads China in successful launches 58 to 30, and the entire world combined 58 to 50, with SpaceX by itself leading the entire world (excluding American companies) 51 to 50.

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Indian company Skyroot conducts rocket engine test

Capitalism in space: The Indian rocket startup Skyroot successfully conducted a ten-second static fire test of a new engine, using a test facility of India’s space agency ISRO.

The Modi government has established a policy that ISRO must provide its facilities for private companies to develop their rockets, and this test was another demonstration that this policy is taking hold. It also indicates that Skyroot is getting closer to launching its first orbital rocket, Vikram-1.

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Chandrayaan-3 completes fourth engine burn in Earth orbit

Chandrayaan-3's mission profile

According to India’s space agency ISRO, engineers have successfully completed the fourth of about six engine burns designed to raise Chandrayaan-3’s Earth orbit in preparation for sending it on its path to the Moon.

As shown in the graphic to the right, these adjustments are relatively small, but each increases the speed of the spacecraft at its orbit’s closest point to the Earth. That extra velocity thus reduces the amount of fuel needed for that trans-lunar-injection burn.

If all the maneuvers continue to go as planned, the landing attempt will occur around August 23, 2023.

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