Tag: engineering

SpaceX finds a way to extend the launch window for Europa Clipper

10:03 am

The launch window for SpaceX’s launch of NASA’s Europa Clipper to Jupiter has now been extended a full week because the company has revised the launch process and made hardware changes.

The new launch window runs from October 10th to November 6th.

Usually the two side boosters come back to land at Cape Canaveral Space Force Station so they can be reused and sometimes the core booster is recovered at sea, but not this time. All their fuel will be used to get Europa Clipper on its way to Jupiter. Piloto said SpaceX “made some hardware modifications that enable the launch vehicle to utilize all the fuel in the boosters,” but couldn’t go into detail about what they are because the information is proprietary.

[The NASA official] added that SpaceX has gained experience in flying this configuration — it’s the 11th Falcon Heavy launch — and the company has “come up with a strategy to optimize throttling of the launch vehicle to get more performance out of it.”

NASA and SpaceX have also decided to use NASA’s orbiting communications constellation during the launch instead of ground stations, which increases their flexibility and margins.

I wonder if the FAA has approved these changes. Or even if anyone there even understands them.

13 comments

SpaceX and Elon Musk blast the FAA’s red tape again

9:54 am

Are Americans finally waking up and emulating their country's founders?

Fight! Fight! Fight! Yesterday both SpaceX and Elon Musk renewed their attack on the FAA’s apparent arbitrary harassment of the company, both by slowing down development of Starship/Superheavy as well as imposing fines and delays on the company for petty issues relating to Falcon 9 launches.

First, Elon Musk sent out a tweet on X, highlighting a successful static fire launchpad engine test of the Starship prototype the company plans to fly on the sixth Starship/Superheavy orbital flight. As he noted with apparent disgust, “Flight 5 is built and ready to fly. Flight 6 will be ready to fly before Flight 5 even gets approved by FAA!”

Second, and with more force, the company released a public letter that it has sent to the leading Republican and Democratic representatives of the House and Senate committees that have direct authority over space activities, outlining its issues with the FAA’s behavior. The letter details at length the irrational and inexplicable slowdown in FAA approvals that caused two launches last summer to occur in a confused manner, with SpaceX clearly given the impression by the FAA that it could go ahead which the FAA now denies. In one case the FAA claims SpaceX removed without its permission a poll of mission control during its countdown procedure. SpaceX in its letter noted bluntly that the regulations do not require that poll, and that the company already requires two other polls during the count.

In another case involving SpaceX’s plan to change to a new mission control center, the company submitted its request in June, and after two months the FAA finally approved the control center’s use for one launch, but had still not approved it for a second. The first launch went off, so SpaceX thus rightly assumed it could use the control center for the second. Yet the FAA is now trying to fine SpaceX for that second launch.

The third case of FAA misconduct appears to be the most egregious. » Read more

8 comments

SpaceX launches 21 more Starlink satellites

8:58 am

SpaceX this morning successfully launched another 21 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its thirteenth flight, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

93 SpaceX
39 China
11 Russia
10 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 108 to 61, while SpaceX by itself now leads the entire world, including American companies, 93 to 76.

6 comments

China launches two GPS-type satellites

4:06 pm

China today successfully launched two more BeiDou satellites for its GPS-type navigation constellation, its Long March 3B rocket lifting off from its Xichang spaceport in the southwest of China.

No word on where the strap-on boosters and lower stages crashed in China, all using toxic hypergolic fuels.

The leaders in the 2024 launch race:

92 SpaceX
39 China
11 Russia
10 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 107 to 61, while SpaceX by itself still leads the entire world, including American companies, 92 to 76.

0 comments

Webb takes an infrared look at a galaxy looked at by Hubble

12:21 pm

Comparing Hubble with Webb
For original images go here and here.

Cool image time! The bottom picture on the right, cropped to post here, is a just released false color infrared image of the galaxy Arp 107, taken by the Webb Space Telescope. The picture at the top is a previously released optical image taken by the Hubble Space Telescope and featured as a cool image back in September 2023. The Hubble image was taken as part of a survey project to photograph the entire Arp catalog of 338 “peculiar galaxies,” put together by astronomer Halton Arp in 1966. In this case Arp 107 is peculiar because it is actually two galaxies in the process of merging. It is also peculiar because the galaxy on the left has an active galactic nuclei (AGN), where a supermassive black hole is sucking up material and thus emitting a lot of energy.

The Webb infrared image was taken to supplement that optical image. The blue spiral arms indicate dust and star-forming regions. The bright orange object in the center of the galaxy is that AGN, clearly defined by Webb’s infrared camera.

When I posted the Hubble image in 2023, I noted that “if you ignore the blue whorls of the left galaxy, the two bright cores of these merging galaxies are about the same size.” In the Webb image the two cores still appear about the same size, but in the infrared they produce emissions in decidedly different wavelengths, as shown by the different false colors of orange and blue. The core of the galaxy on the right is dust filled and forming stars, while the core of the left galaxy appears to have less dust with all of its emissions resulting from the energy produced by the material being pulled into the supermassive black hole.

The universe is very active and changing, but to understand that process we humans have to look at everything across the entire electromagnetic spectrum, not just in the optical wavelengths our eyes see.

2 comments

Newly discovered potentially dangerous asteroid found to be a contact binary

11:38 am

Radar images of asteroid 2024ON
Click for original image.

Radar images taken during the close fly of a newly discovered potentially dangerous asteroid has revealed that it is a contact binary, formed by two objects stuck together to produce a single asteroid with a peanutlike shape.

Discovered by the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) on Mauna Loa in Hawaii on July 27, the near-Earth asteroid’s shape resembles that of a peanut. Like the asteroid 2024 JV33 that made close approach with Earth a month earlier, 2024 ON is likely a contact binary, with two rounded lobes separated by a pronounced neck, one lobe about 50% larger than the other. The radar images determined that it is about 755 feet (350 meters) long. Features larger than 12.3 feet (3.75 meters) across can be seen on the surface. Bright radar spots on the asteroid’s surface likely indicate large boulders. The images show about 90% of one rotation over the course of about six hours.

The radar images were taken one day before that close approach of 620,000 miles on September 17, 2024, and once again show that a large number of near-Earth asteroids, as much as 14%, are contact binaries. The data also helped better refine 2024ON’s orbit around the Sun, which show that though the asteroid has the potential to hit the Earth, its path will not do so for the foreseeable future.

1 comment

Phobos rising and Earth setting as captured together by Curiosity

10:56 am

Phobos and Earth in the Martian sky
Click for original image.

Cool image time! The picture to the right, enhanced and reduced to post here, was taken by the high resolution camera on the Mars rover Curiosity on September 5, 2024.

What makes this picture unique are the two tiny spots near the upper right. For the first time, Curiosity’s camera was able to capture both the Earth and the Martian moon Phobos in the same picture, when they were also very close to each other in the sky. From the caption:

NASA’s Curiosity Mars rover used its Mast Camera, or Mastcam, to capture this view of Earth setting while Phobos, one of Mars’ two moons, is rising. It’s the first time an image of the two celestial bodies have been captured together from the surface of Mars.

The image is a composite of five short exposures and 12 long exposures all taken on Sept. 5, 2024, the 4,295th Martian day, or sol, of Curiosity’s mission. An inset in the image [found here] shows Phobos on the left and Earth on the right. From the rover’s perspective, the inset area would be about half the width of a thumb held at arm’s length.

The dark shape in the lower left is one of the buttes that surround Curiosity as it has been climbing up Mount Sharp and traversing inside the Gediz Vallis slot canyon.

The inset provides a close-up of the two objects, but the resolution is poor. To me, it is much more interesting to look at the picture to the right, that shows what these two objects actually looked like in the sky of Mars.

6 comments

FCC commissioner slams FCC for its partisan hostility to SpaceX

10:27 am

The FCC proves its partisan hostility to SpaceX
The FCC proves its partisan hostility to SpaceX

Even as the FAA has increasingly appeared to be harassing SpaceX with red tape, FCC commissioner Brendan Carr this week slammed his own agency for what appears to be clearly partisan hostility to SpaceX in its recent decisions and public statements.

Carr noted how only last year the FCC had canceled an almost $900 million grant that it had previously awarded to SpaceX for providing rural communities internet access. When it did so, the FCC claimed that the company had failed to “demonstrate that it could deliver the promised service.”

That claim of course was absurd on its face, considering that Starlink was the only available commercial system that was actually doing this, directly to individual rural customers.

Carr noted however that this absurd FCC decision was made even more ridiculous this week by the FCC’s chairperson, Jessica Rosenworcel, who accused SpaceX of being a “monopoly” because of its success in launching Starlink satellites and providing this service ahead of everyone else.
» Read more

11 comments

Sierra Space successfully tests equipment for extracting oxygen from the lunar soil

9:57 am

In a press release this week Sierra Space revealed that it has successfully tested an extraction system that can gather up the abrasive lunar regolith and then heat it to high temperatures in order to extract and use the oxygen contained in that soil.

Temperatures in which the Sierra Space Carbothermal Oxygen Production Reactor were tested ranged from minus 45 degrees Celsius to 1,800 degrees Celsius. In addition to the challenges of functioning from sub-zero to hotter-than-lava temperatures, the hardware was required to move the simulated lunar regolith – a very abrasive and jagged material because it does not have the weathering processes found on Earth – through its system. The potentially damaging particles were handled effectively by the hardware and gasses were successfully sealed inside the reactor, thanks to Sierra Space’s use of a patent-pending valve design that previously demonstrated functionality to greater than 10,000 cycles.

The tests confirmed that Sierra Space’s system can successfully handle regolith that would be delivered from a lunar rover or robotic arm and automatically bring it into the reaction chamber, perform the carbothermal reduction reaction process to extract the oxygen from the minerals in the regolith, and remove the processed regolith from the system so the operation can be repeated.

This research is similar to the extraction system the Chinese are developing, though it appears Sierra’s system appears considerably closer to a finished product, as it is already being tested.

4 comments

Eutelsat awards multi-launch contract with Mitsubishi

9:42 am

The French communications satellite company Eutelsat has awarded the Japanese company Mitsubishi a multi-contract using its H3 rocket.

The company did not reveal the contract amount or the number of launches involved. The first launches however will begin in 2027, with company officials explaining why they signed the deal.

The operator already has launches mostly covered for deploying its next-generation OneWeb broadband satellites in low Earth orbit (LEO), CEO Eva Berneke recently told SpaceNews. However, these launches include 3D printing specialist Relativity Space’s Terran R vehicle and Europe’s next-generation launcher Ariane 6, which have both already experienced development delays.

Ariane 6 is also part of the multi-billion-dollar launch campaign Amazon plans to kick off this year for its LEO constellation. “Given that Amazon has acquired Ariane 6 rockets, if we wanted to use it in, say, 2027, are we going to fit into their launch manifest or not?” Berneke told SpaceNews in the interview.

There are two interesting aspects to this deal. First, Eutelsat decided it needed to diversify its launch providers. The status of Relativity’s Terran-R rocket remains uncertain, and if it goes under Eutelsat would be left with just Ariane-6, which has its own issues and might not be able to meet the demand.

Second, Eutelsat clearly decided it did not want to give this business to SpaceX. I guarantee SpaceX’s price was less than Mitsubishi’s since the H3 is entirely expendable and very expensive, developed by Mitsubishi primiarly for the Japanese government (which paid the bills) and not as a player in the international launch market. Eutelsat made this choice for probably good and bad reasons. The good reason: All satellite companies need to encourage the success of as many launch providers as possible, to increase its options and competion. Giving business to Mistubishi serves that purpose.

The bad reason? Among many in Europe and elsewhere there is a childish resentment of SpaceX, simply because. No one will say so publicly, and if asked everyone will deny it, but the evidence clearly suggests that this silly emotional factor exists.

1 comment

Indian government approves major space projects, including new rocket, missions to the moon, space station, Venus

3:54 pm

The cabinet of Modi government in India today approved a whole range of major space projects for the next decade, including a sample return mission to the moon, the building of the first module of that country’s space station, an orbiter to Venus, and the development of a new more powerful but reusable rocket.

The lunar sample return mission, dubbed Chandrayaan-4, is targeting a launch about three years from now, and will be shaped to provide information leading to a manned lunar mission by 2040.

The cabinet also approved the development of the first module of its proposed Bharatiya Antariksh Station (BAS), targeting a 2028 launch date with the full station completed by 2035. This approval also included a plan for manned and unmanned missions leading up to the launch of that first module.

Under the programme eight missions are envisaged — four under the ongoing Gaganyaan programme by 2026, and development of BAS-1, and another four missions for demonstration and validation of various technologies by December 2028.

The Venus Orbiter is now targeting a 2028 launch.

The new launch rocket, dubbed the Next Generation Launch Vehicle (NGLV) will aim for reusability and be 1.5 times more powerful than the India’s presently most powerful rocket, the Launch Vehicle Mark-3 (LVM-3). The program to develop this new rocket however appears overally long (8 years) with relatively little flight testing (3 flights).

Overall, this government space program will likely energize India’s new commercial aerospace industry, as the Modi government is also attempting to shift as much of this work to private companies, rather than have its space agency ISRO do the work.

1 comment

NASA awards Intuitive Machines $4.8 billion contract to build Moon communication satellite constellation

9:17 am

NASA yesterday awarded Intuitive Machines a contract worth as much as $4.8 billion to build the communication relay infrastructure necessary to support bases and research on the Moon.

This Subcategory 2.2 GEO to Cislunar Relay Services is a new firm-fixed-price, multiple award, indefinite-delivery/indefinite-quantity task order contract. The contract has a base period of five years with an additional 5-year option period, with a maximum potential value of $4.82 billion. The base ordering period begins Tuesday, Oct. 1, 2024, through Sept. 30, 2029, with the option period potentially extending the contract through Sept. 30, 2034.

Lunar relays will play an essential role in NASA’s Artemis campaign to establish a long-term presence on the Moon. These relays will provide vital communication and navigation services for the exploration and scientific study of the Moon’s South Pole region. Without the extended coverage offered by lunar relays, landing opportunities at the Moon’s South Pole will be significantly limited due to the lack of direct communication between potential landing sites and ground stations on Earth.

According to the company’s own press release, this relay system will include a “lunar satellite constellation,” though the number of satellites was not revealed. The system will provide not just communications but will include GPS-type location data for ground operations.

3 comments
1 … 173 174 175 176 177 … 1,352