Tag: engineering

Lunar Reconnaissance Orbiter snaps a smeared image of South Korea’s Danuri lunar obiter

10:04 am

Danuri as seen by LRO
Click for original image.

Cool image time! On March 5 to March 6, 2024, the orbits of NASA’s Lunar Reconnaissance Orbiter (LRO) and South Korea’s Danuri orbiter had three close approaches, during which LRO had a chance to snap pictures of Danuri as it zipped by in the opposite direction.

The first image is to the right, cropped but expanded to post here.

The flight paths of the two vehicles were nearly parallel but in opposite directions, resulting in extreme relative velocity. The LROC NAC exposure time was very short, only 0.338 milliseconds. But still, Danuri was smeared by a factor greater than 10x in the downtrack direction.

…On the first opportunity, LRO was slewed 43 degrees to capture Danuri from a distance of 5.0 kilometers

Of the three pictures taken, this one appears the best. In all three cases, the fast relative speed was too fast for the camera shutter, so that Danuri’s image was smeared as you see.

2 comments

SpaceX launches 11 commercial payloads

6:00 pm

SpaceX today successfully launched 11 commercial payloads into orbit, as the first of what it calls its Bandwagon series, designed to provide launch ssatellites to medium inclination Earth orbits. The Falcon 9 rocket lifted off from Cape Canaveral, its first stage completing its fourteenth flight, landing back at Cape Canaveral.

The leaders in the 2024 launch race:

36 SpaceX
14 China
5 Russia
4 Rocket Lab

American private enterprise now leads the rest of the world combined 41 to 25, while SpaceX by itself leads the rest of the world, including other American companies, 36 to 30.

2 comments

Musk provides update to his Boca Chica crew

11:50 am

The candidate landing zone on Mars for Starship
The candidate landing zone on Mars for Starship

Elon Musk yesterday gave a 44-minute update on Starship/Superheavy to his team in Boca Chica, outlining what he now expects in the next two years as well as in the next two decades.

You can watch his presentation here. Musk began by once again describing his fundamental goal behind the company, to make the human race multi-planetary, for its own survival, and that Mars is at this time the best choice for doing so. He then provided some details about the on-going development of Starship/Superheavy:

  • SpaceX will be ready to launch 4th test flight in early May
  • There is an 80-90% chance they will attempt a tower landing of Superheavy, caught by its chopstick arms, by the end of this year
  • Starship will require at least two precision ocean landings before they attempt a tower landing
  • To provide tower redundancy for these test landings, by next year they will have 2 towers at Boca Chica, 2 at Cape Canaveral, with Cape Canaveral operational by next year
  • In 2024 they hope to build 6 Superheavys and Starships for test flights
  • By 2025 they plan to test full refueling of Starship in orbit
  • The third iteration of Starship/Superheavy will be capable of placing 200 tons in orbit
  • That third iteration will cost less to launch than Falcon 1, $2-3 million
  • To make a base on Mars self-sufficient quickly, he anticipates sending large fleets of Starships every two years, everytime the flight window to Mars opens.
  • The preferred landing sites will be in the low mid-latitudes, 30-40 degrees, with elevations two kilometers below the Martian “sea level”, to take advantage of a thick atmosphere.
  • If all goes as planned, Musk expects SpaceX to establish a Mars colony in about two decades

That next-to-last bullet point fits perfectly with the region north of Amazonis Planitia, as shown on the map above, where SpaceX has requested numerous images from the high resolution camera on Mars Reconnaissance Orbiter (MRO). It is two kilometers below the “sea level” of Mars. It is at a latitude either on or close to 40 degrees north latitude. It is a region that orbital data says has lots of very near-surface ice. And it is flat, making those first landings relatively safe.

10 comments

Argentina demands right to inspect Chinese antenna facility

9:45 pm

The Argentina government of Javier Milei is now demanding the right to inspect a Chinese antenna facility that was established in Argentina in 2014 and began operating in 2017 under a 50-year-lease.

Under the agreement between the two nations, 10% “of the resources in the base must be utilized by Argentina.” However, China has been operating the facility unsupervised from the beginning. Likely built to support China’s space program, manned and planetary, U.S. officials have also suggested it is being used for military purposes, a possibility that cannot be dismissed since all of China’s space program falls under the supervision of the People’s Liberation Army.

Milei apparently wants a hand in its operation, or at least a much clearer idea of what it is doing. It is very possible he will even shut it down if he is not satisfied with the answers he gets.

6 comments

SpaceX launches 22 Starlink satellites, with 6 capable of direct-to-cell service

9:34 pm

The beat goes on: SpaceX tonight launched another 22 Starlink satellites, six of which were capable of direct-to-cell service. The Falcon 9 rocket lifted off from Vandenberg, with its first stage completing its sixth flight, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

35 SpaceX
14 China
5 Russia
4 Rocket Lab

American private enterprise now leads the rest of the world combined 40 to 25, while SpaceX by itself leads the rest of the world, including other American companies, 35 to 30.

1 comment

Varda quickly raises $90 million after completing its first orbital manufacturing mission

2:18 pm

As expect, Varda announced yesterday that it raised $90 million in investment capital following the publication of the results of its first orbital manufacturing mission, where its returnable capsule was used to produce test pharmaceuticals in space that cannot be made on Earth.

Varda announced April 5 it raised a Series B round led by venture firm Caffeinated Capital, with participation from Lux Capital, General Catalyst, Founders Fund and Khosla Ventures. The company has raised $145 million to date. The funding round comes on the heels of the successful conclusion of its first demonstration mission, W-1, on Feb. 21 when the company’s capsule landed at the Utah Test and Training Range. The capsule had been part of a spacecraft launched in June 2023 to test the ability to produce pharmaceuticals in microgravity.

The new funding will allow Varda to scale up production of spacecraft that take advantage of microgravity to produce pharmaceuticals that are not possible or cost-effective to make on the ground.

The company already has a second returnable capsule scheduled for launch this summer on a Rocket Lab Electron rocket.

3 comments

The taffy terrain in Mars’ death valley

1:42 pm

Taffy terrain in Hellas Basin on Mars

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on February 21, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled “banded terrain and layering,” it actually is a good example of “taffy terrain,” a weird Martian geological formation unique to the Red Planet that scientists as yet don’t quite understand. This 2014 paper only says this:

The apparent sensitivity to local topography and preference for concentrating in localized depressions is compatible with deformation as a viscous fluid. In addition, the bands display clear signs of degradation and slumping at their margins along with a suite of other features that include fractured mounds, polygonal cracks at variable size-scales, and knobby/hummocky textures. Together, these features suggest an ice-rich composition for at least the upper layers of the terrain, which is currently being heavily modified through loss of ice and intense weathering, possibly by wind.

» Read more

0 comments

Mitsubishi joins private consortium building the Starlab commercial space station

8:24 am

The Japanese big space company Mitsubishi has now joined the private consortium building the Starlab commercial space station for NASA, teaming up with Voyager Space and Airbus.

At this moment it appears that Voyager, the lead company in this station, is attempting to capture the international market that up to now has been part of ISS. Airbus gets it direct access to European companies and the Europeans Space Agency (ESA). Mitsubishi now gets it direct access to Japanese government financing.

The other stations being built with NASA financing, Axiom and Orbital Reef, so far seem more focused on getting American business, as is Vast’s Haven-1 station, being built entirely from private funds.

3 comments

Thailand joins China’s partnership to build a lunar base on the Moon

8:13 am

Thailand today signed an agreement with China to become the eighth nation to join its partnership to build its lunar base on the Moon, dubbed the International Lunar Research Station (ILRS).

The partners so far are Azerbaijan, Belarus, Egypt, Pakistan, Russia, South Africa, Thailand, and Venezuela. In addition, another nine academic organizations of one kind or another have signed on. Except for Russia, the partners in China’s program are mostly there for public relations purposes, and will contribute little to the project. And Russia itself will likely not contribute much either, considering its inability to get any major new projects launched for the past two decades.

1 comment

Voyager-1 still out of commission

8:05 am

Though engineers have now confirmed the cause of the computer problem that has prevented Voyager-1 from sending back readable data, a fix has not yet been attempted and the spacecraft remains in safe mode.

In early March, the team issued a “poke” command to prompt the spacecraft to send back a readout of the FDS [Flight Data Subsystem] memory, which includes the computer’s software code as well as variables (values used in the code that can change based on commands or the spacecraft’s status). Using the readout, the team has confirmed that about 3% of the FDS memory has been corrupted, preventing the computer from carrying out normal operations.

The team suspects that a single chip responsible for storing part of the affected portion of the FDS memory isn’t working. Engineers can’t determine with certainty what caused the issue. Two possibilities are that the chip could have been hit by an energetic particle from space or that it simply may have worn out after 46 years.

Although it may take weeks or months, engineers are optimistic they can find a way for the FDS to operate normally without the unusable memory hardware, which would enable Voyager 1 to begin returning science and engineering data again.

Considering that Voyager-1’s power supply will run out sometime in 2026, after almost a half century of operation, the engineers really don’t have that much time to fix the problem and resume science operations.

7 comments

SpaceX launches another 23 Starlink satellites

7:47 am

Like an Energizer bunny: SpaceX last night successfully placed 23 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage successfully completed its 14th flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

34 SpaceX
14 China
5 Russia
4 Rocket Lab

American private enterprise now leads the rest of the world combined 39 to 25, while SpaceX by itself leads the rest of the world, including other American companies, 34 to 30. SpaceX also has another launch scheduled for tonight.

1 comment
1 … 226 227 228 229 230 … 1,353