Tag: ISRO

Vikram takes movie of Pragyan rover as it roves

9:30 am

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.

5 comments

Both Vikram and Pragyan functioning as planned on the Moon

9:29 am

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.

6 comments

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

9:23 am


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.

2 comments

India successfully lands Vikram on the Moon

9:10 am


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

4 comments

Chandrayaan-3 reaches final lunar orbit for landing

9:12 am


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.

Leave a comment

India approves new spaceport for private launches of SSLV rocket

9:29 am

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.

Leave a comment

ISRO releases first images of the Moon from Chandrayaan-3

10:23 am

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.

Leave a comment

Chandrayaan-3 enters lunar orbit

9:38 am


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.

One comment

Chandrayaan-3 is now on its way to the Moon

9:11 am

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.

Leave a comment

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

9:12 am

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.

2 comments

India’s PSLV rocket places seven satellites into orbit

6:23 pm

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.

Leave a comment

Indian company Skyroot conducts rocket engine test

11:24 am

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.

One comment

Chandrayaan-3 completes fourth engine burn in Earth orbit

9:04 am

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.

9 comments

ISRO successfully tests propulsion system of Gaganyaan’s service module

8:56 am

India’s space agency ISRO revealed today that it has successfully completed the second phase of static fire engine tests of the complete propulsion system to be used by the service module of its Gaganyaan’s manned space capsule.

The first hot test of the Phase-2 test series demonstrated the integrated performance of the Gaganyaan Service Module Propulsion System. The test, conducted for a duration of 250 seconds, involved LAM engines firing in continuous mode, along with RCS thrusters, adhering to the test profile.

As part of the Phase-1 test series of SM SDM, ISRO had previously conducted five hot tests, totalling a duration of 2750 seconds. The earlier phase involved five 440 N LAM engines and eight 100 N RCS thrusters. For the Phase-2 test series, the current configuration includes the full configuration of five 440 N LAM engines and sixteen 100 N RCS thrusters.

ISRO had been hoping to launch the first manned mission in ’24, but that target date remains very uncertain.

Leave a comment

Chandrayaan-3 completes second orbital maneuver

9:32 am

Chandrayaan-3's mission profile

According to India’s space agency ISRO, its lunar lander/rover Chandrayaan-3 today completed second orbital maneuver, raising the spacecraft’s orbit around the Earth from 41,762 by 173 kilometers to 41,603 x 226 kilometers.

The graphic to the right shows the entire mission profile of Chandayaan-3. It still has three more orbital adjustments to make in Earth orbit before it does its trans-lunar-injection burn to send it to the Moon. Once it arrives in lunar orbit it will then have to make six orbital adjustments to lower its orbit before making the descent to the surface.

The lunar landing itself is presently scheduled for August 23, 2023.

Leave a comment

An apparent rocket section washes up on Australian coast

9:19 am

What appears to be a section of India’s PSLV rocket washed up on the western Australian coast yesterday, though at the moment the identity of the wreckage as not been confirmed.

Dr Alice Gorman, an expert in the field of space archaeology, said she believes the object is a fuel cylinder that came from the the third stage of India’s polar satellite launch vehicle rocket (PSLV), as many have suggested on social media.

The article includes a picture of that stage in orbit during a 2017 launch, and the similarity is obvious. If true, its specific launch at present remains unknown, though it appears it could have been floating in the ocean for years, a fact that is surprising in itself.

2 comments

India successfully launches Chandrayaan-3

8:35 am


Click for interactive map.

India today successfully launched its Chandrayaan-3 lunar lander/rover probe toward the Moon, carried aloft by its LV-M3 rocket (a variation of its GSLV) from its coastal spaceport in Sriharikota.

Chandrayaan-3 carries the Vikram lander, which will bring the Pragyan rover to the surface. Pragyan will spend about two weeks operating on the lunar surface. The location is indicated by the red dot on the map to the right, in the high southern latitudes. The white cross marks the lunar south pole. Russia’s Luna-25 is scheduled to launch sometime in mid-August.

It will take time to get Chandrayaan-3 into the right lunar orbit for landing, which is presently scheduled for August 13, 2023.

For India this was its fifth successful launch for the year, the most since 2019, before it panicked over COVID. The leaders in the 2023 launch race:

46 SpaceX
26 China
9 Russia
5 Rocket Lab
5 India

American private enterprise still leads China in successful launches 52 to 26, and the entire world combined 52 to 45, while SpaceX by itself still leads the rest of the world (excluding other American companies) 46 to 45.

One comment

Voyager Space’s space station will use India’s manned capsule as ferry

10:11 am

Voyager Space, which is one of three consortiums building private space stations for NASA, has now signed a deal with India to begin work that would make possible using India’s Gaganyaan manned capsule as a ferry to Voyager’s Starlab space station.

Gaganyaan is presently under development. India hopes it will fly its first manned mission by 2025. Meanwhile, this international deal is not the first for Voyager. It has also signed launch contracts with India to use its two smaller rockets to launch payloads, as well as signed a development deal with Europe’s Airbus.

Leave a comment

ISRO to transfer ownership of its smallsat SSLV rocket to a private company

9:38 am

India’s space agency ISRO has now announced that it is planning to transfer full ownership of its new smallsat SSLV rocket to a private company, with that transfer conducted through open bidding.

The Indian Space Research Organisation (ISRO) will soon transfer its Small Satellite Launch Vehicle (SSLV) to the private sector, after conducting two development flights of the rocket that seeks to provide on-demand services to put satellites weighing up to 500 kg in a low-earth orbit. The space agency has decided to opt for the bidding route to transfer the mini-rocket to the industry, a senior official said. “We will be transferring the SSLV completely to the private sector. Not just the manufacturing, but full transfer,” the official said.

The article does not provide a source, so this story is at present unconfirmed. It does fit with the overall policy of the Modi government, but it also clashes with the power structure in India’s vast bureaucracy that is resisting that policy. It is very possible that the story has been leaked as part of that struggle, likely by bureaucracy to gin up opposition prior to the transfer being implemented.

Up to now under the Modi government’s efforts to force ISRO to give up power, the assets of ISRO that have been used to generate commercial profits — such as its rockets — have generally been transferred to a new separate bureaucracy created by ISRO dubbed NSIL. NSIL supposed to operate like a private company, but it is wholly owned by the government, and is thus structured to retain control within that government.

If this news story is correct, the Modi government is about to bypass NSIL and force ISRO to sell off SSLV. If so this is excellent news, though the devil will certainly be hidden in the final details of the sale.

Leave a comment

ISRO aborts first static fire test of prototype of a new upper stage rocket engine

8:51 am

According to India’s space agency ISRO, on July 1st engineers were forced to abort the first static fire test of prototype of a new upper stage rocket engine, planned to last 4.5 seconds but stopped after 1.9 seconds.

The test proceeded as predicted till 1.9 s validating the ignition and subsequent performance of PHTA [Power Head Test Article]. At 2.0 s, an unanticipated spike in the turbine pressure and subsequent loss of turbine-speed was observed. As a precautionary step, the test was terminated. Analysis under progress would offer further understanding before proceeding with further hot-tests for longer duration.

This was not a test of a real rocket engine, but an engineering test prototype, designed “to validate the integrated performance of the critical subsystems such as the gas generator, turbo pumps, pre-burner and control components.” That the test showed issues without exploding is actually very good news. Engineers still have the prototype to quickly figure out what went wrong and fix it.

Leave a comment

Blue Origin negotiating with India to use its rockets and capsule for Orbital Reef space station

10:20 am

According to the head of India’s space agency ISRO, he has been in discussions with Blue Origin about using different versions of that nation’s largest rocket (dubbed LVM-3 or GSLV-Mk3 depending on configuration) and its manned capsule (still under development) for eventually ferrying crew and cargo to Blue Origin’s proposed Orbital Reef space station.

Somanath said: “We are exploring … In fact, we’ve already discussed it with Blue Origin and they are very keen to consider this option of LVM-3 becoming a crew capsule mission to service the Orbital Reef. It is a possibility and we are engaging through IN-SPACe (Indian National Space Promotion and Authorisation Centre).”

On the challenge of integrating a docking system that is compatible, he said standard docking systems are in the public domain. “…Whoever can design a docking system that matches with the US design and standard, can be used. However, we will still need to have agreements with agencies to try it out given that there are multiple interfaces — electrical, mechanical and so on. It is not just one document, we will need to work with them to develop it. We will do that.

It appears Somanath has also had discussions with NASA about also providing the same service to ISS.

An Orbital Reef deal however suggests something very disturbing about Blue Origin. The plan had been to use Blue Origin’s New Glenn orbital rocket (also still under development but years behind schedule) to launch crew and cargo capsules to the station. That in fact is supposed to be Blue Origin’s main technical contribution to the station. Why would the company then look to India for such capability, unless it recognizes that there are more problems with New Glenn that it has not revealed?

It is also possible that Jeff Bezos is simply expressing his leftwing globalist agenda with these negotiations. Or it could mean some combination of both. This situation bears watching.

7 comments

India’s space agency ISRO launches GPS-type satellite

10:31 pm

India’s space agency ISRO today successfully used its GSLV rocket to place the first of a new constellation of that country’s second generation GPS-type satellites into geosynchronous orbit, lifting off from its Sriharikota east coast spaceport.

This was India’s fourth successful launch in 2023, matching its entire total last year. It appears that country has finally recovered from its panic during COVID.

The leader board for the 2023 launch race remains the same:

35 SpaceX
19 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 40 to 19 in the national rankings, and the entire world combined 40 to 35. SpaceX alone is now tied with the rest of the world combined 35 to 35, but trails the entire world including American companies 35 to 40.

3 comments

India’s PSLV rocket successfully launches two Singapore satellites

1:46 pm

India’s PSLV rocket today successfully put two Singapore satellites into orbit, one a radar satellite and the other a large cubesat testing smallsat communication technologies.

The leaders in the 2023 launch race:

25 SpaceX
16 China
6 Russia
3 Rocket Lab
3 India

American private enterprise still leads China 28 to 16 in the national rankings, and is tied at 28 with the entire world combined.

One comment

India’s Modi government releases its new space policy

10:10 am

After some hints in the past month that the not-yet-released new space policy of the Modi government of India would favor commercial space over the government agencies that have run India’s space program from inception, the newly released space policy [pdf] confirms those hints.

Essentially, the policy transfers power from India’s space agency ISRO — which has always controlled all Indian launches and space development — to other government agencies, which in turn are tasked not to develop new space projects but to “ensure a level playing field for the utilization of all facilities created using public expenditure, by prioritizing their use among Government entities and [private companies].”

The policy is unlike any government document I have ever read from India. It is short, direct, clearly written, and to the point. It clearly takes control of space from ISRO and gives supervisory control to two new agencies, the Indian National Space Promotion & Authorisation Centre (IN-SPACEe) and NewSpace India Limited (NSIL), both of which are tasked to encourage the development of an independent private commercial space industry.

The policy is of course not perfect, as the power of the government bureaucracy in India is deep and wide. ISRO still has the task of developing new space technologies, such as India’s human spaceflight program. Whether it will be required to slowly become a customer of commercial resources rather then being the builder of its own we shall have to wait and see. NSIL in turn has been given ISRO’s past commercial responsibilities — such as launching rockets for profit — so that that the government bureaucracy can still compete with the private sector for market share.

All in all, however, it appears that the Modi government wishes to mimic the changes that have occurred in the U.S., transitioning from a government-run space program to a privately owned space industry from which the government buys what it needs (as outlined in my 2017 policy paper Capitalism in Space).

Leave a comment

Does India’s new space policy shift operations from the government to the private sector?

10:06 am

On April 6, 2023 the Modi government of India announced that it had approved a new space policy, describing it as designed to boost private commercial space over the government-run operations of its space agency ISRO.

At the time, and still to this day, the actual text of that policy has not been released. However, an article today from India provides some analysis of this policy, based on statements by several government officials, and suggests that the goal of that policy is the same as NASA’s has been for the past decade, shift from being the builder of spacecraft and rockets to simply being the customer buying those products from the private sector. The key statement illustrating this came from Dr. S. Somnath, chairman of ISRO.

Speaking to the media, Somnath said that the new policy is focused on strengthening the participation of private players in India’s space program. The ISRO chairman also said that the new policy outlines a framework under which the private sector can use ISRO facilities for a small fee. The policy also looks upon private players to create new infrastructure in the space sector.

In what can be seen as a critical move, Somnath told the media that “ISRO will not do any operational and production work for the space sector and focus its energies on developing new technologies, new systems and research and development.” This essentially means that the routine production and launches that the ISRO was so caught up with until now will be handled by the private sector completely.

In other words, ISRO’s effort to capture market share by launching its rockets (dubbed GSLV, PSLV, and SSLV) for profit will eventually end. The Modi government instead wants the private sector to do this work, with rockets it builds and owns.

Even if we assume this analysis is correct, replacing ISRO’s rocket with private rockets however cannot happen quickly. While India has a vibrant commercial space industry, it presently only has two startup rocket companies, Agnikul and Skyroot, neither of which is close to reaching orbit. For NASA, the transition from running and owning everything to being a customer took about a decade. Expect the same transition in India to take as long, assuming the Modi government stays firm against the resistance that will surely come from its government bureaucracy, and any later administrations hold to this policy as well.

Furthermore, that the policy text has not been made public strongly suggests that the Modi government recognizes that it will face strong opposition within India’s very large and powerful bureaucracy, which is far larger and stronger than even the U.S.’s administrative state in DC. Fighting that bureaucracy in India is going to be very difficult, if not impossible.

Leave a comment

April 6, 2023 Quick space links

5:21 pm

Courtesy of BtB’s stringer Jay.

  • China invites Brazil to participate in its lunar base project

    • There is no indication Brazil accepted the offer. The offer took place during a meeting between officials of the Brazil Space Agency and one of China’s pseudo-companies, China Great Wall Industry Corporation (which according to Jay “is the international launch service subsidiary” for China). Thus, this could be an effort by that pseudo-company to gain launch access to Brazil’s recently reactivated Alcântara spaceport.

 

One comment

India successfully lands its own version of the X-37B on a runway

10:00 am

LEX landing

India’s space agency ISRO today successfully landed its own version of the X-37B on a runway.

The flight was a test of the landing system. The spacecraft, dubbed LEX, was dropped from a helicopter at an elevation of 2.8 miles above sea level. It then autonomously guided itself to the runway to land smoothly. The picture to the right shows LEX as it approaches the runway. Note how similar it looks to the X-37B.

ISRO had demonstrated the re-entry of its winged vehicle RLV-TD in the HEX mission in May 2016. … In HEX, the vehicle landed on a hypothetical runway over the Bay of Bengal. Precise landing on a runway was an aspect not included in the HEX mission. The LEX mission achieved the final approach phase that coincided with the re-entry return flight path exhibiting an autonomous, high speed (350 kmph) landing.

The next step will of course be to launch an orbital version, and bring it back to Earth for reuse.

Leave a comment

India launches 36 OneWeb satellites

9:09 pm

India’s space agency ISRO tonight successfully launched 36 OneWeb satellites using its LVM-M3 rocket, the largest version of its GSLV family of rockets.

This launch completes OneWeb’s constellation, with 618 satellites now in orbit, allowing them to now offer internet access worldwide in competition with Starlink. After Russia broke its contract and confiscated 36 OneWeb satellites, the company contracted SpaceX and ISRO to launch the satellites necessary to complete the constellation, with SpaceX doing three launches and ISRO two.

This was India’s second launch in 2023. The leaders in the 2023 launch race remain the same:

20 SpaceX
11 China
5 Russia
3 Rocket Lab

American private enterprise still leads China 23 to 11 in the national rankings, and the entire world combined 23 to 19. SpaceX by itself now trails the entire world, including other American companies, 20 to 22.

4 comments

Both India’s Chandrayaan-3 and Intuitive Machine’s Nova-C lunar landers pass vibration tests

9:21 am


Click for interactive map.

According to separate announcements just released, both India’s Chandrayaan-3 lander/rover and Intuitive Machine’s private Nova-C lunar lander have passed their last ground tests and are now ready for launch to the Moon later this year.

India’s space agency ISRO successfully completed testing of its Chandrayaan-3 lunar lander/rover in early March, completing vibration tests of the spacecraft and proving it will be able to survive the stresses during launch. The spacecraft successfully completed radiation testing in February.

ISRO is now targeting June 2023 for Chandrayaan-3’s launch.

Intuitive Machines meanwhile announced yesterday that its Nova-C lander has completed vibration testing, and is ready for launch later this year.

The map to the right shows the landing sites of these planned landers near the Moon’s south pole (indicated by the white cross), as well as Russia’s long-delayed lunar lander, Luna-25, which is now targeting a July launch.

Leave a comment

ISRO successfully de-orbits defunct satellite

9:09 am

Last orbit of MT1

ISRO announced today that it successfully de-orbited the defunct Earth observation MT1 satellite on March 7, 2023, bringing it down over the Pacific Ocean.

The map to the right shows the timing of the last two de-orbit burns during the satellite’s last orbit.

MT1’s orbit was high enough so that it would have remained in space for about 100 more years, with a lot of fuel that might have caused an explosion and the release of many pieces of space junk. ISRO managers decided to allocate the funds to use that fuel to de-orbit it, as a test for making this a routine part of any satellite end-of-mission.

Leave a comment
1 2 3 4 5 … 10