Year: 2019

FAA gives Rocket Lab an umbrella 5-year launch license

9:41 am

Capitalism in space: The FAA has awarded the smallsat launch company Rocket Lab a 5-year launch license, allowing it to streamline its regulatory process so that it can up its launch pace.

Rocket Lab has received a new five-year Launch Operator License from the Federal Aviation Administration, which grants it permission to do multiple launches of its Electron rocket from its LC-1 launch site in New Zealand without having to seek individual clearance for each one. While not the only limiting factor, this should help Rocket Lab increase the frequency of its launches from LC-1, servicing more customers more often for commercial small satellite customers.

While Rocket Lab has yet to achieve its goal of launches every two weeks, or even one per month, this license should at least remove one obstacle.

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Northrop Grumman buys back Pegasus rockets from Stratolaunch

9:35 am

Northrop Grumman announced this week that it has bought back from Stratolaunch the two Pegasus rockets that company had bought for the purpose of launch from its giant Roc airplane.

Phil Joyce, vice president of space launch programs at Northrop Grumman, said this week that the company is trying to sell the launches using the two remaining Pegasus XL rockets, and officials plan to keep the Pegasus rocket’s L-1011 carrier jet flying for at least five or 10 more years.

The airborne launch of NASA’s Ionospheric Connection Explorer, or ICON, scientific satellite Thursday night off Florida’s east coast is the final scheduled flight of a Pegasus XL rocket. Variants of the solid-fueled Pegasus rocket have flown on 43 satellite delivery missions since 1990.

“We actually purchased those back (from Stratolaunch),” Joyce said in an interview with Spaceflight Now. “So they’re in a very advanced state of integration, which means they’re available for a very rapid response launch. We could launch one of those in six months, the second one probably in eight (months).

This buy back tells us two things, both negative, about both companies. With Stratolaunch, it means they have abandoned entirely the idea of launching satellites using a combination of Roc and Pegasus. The reasons are unclear, but I would guess that they have either discovered the engineering didn’t work, or the economics made the combination unprofitable, being too expensive.

As for Pegasus, it appears the rocket has no further contracts, and has had so much trouble drumming up business that they have decided not to build more. Instead, they are going to try to get contracts for these already built Pegasuses, and are likely going to offer lower prices for them. Even if this works, it does appear that we are about to see the end of the Pegasus rocket.

Created in the early 1980s by Orbital Sciences (later Orbital ATK) as a cheaper alternative to the expensive big rockets of the time, Pegasus had a viable business model for years. Slowly over time however its launch price rose, until it was no longer very cheap. And when SpaceX and other new cheaper alternatives arrived in the past six years, the company, eventually absorbed by Northrop Grumman, was unable to remain competitive.

The irony here is that Northrop Grumman purchased Orbital ATK expressly to allow it to enter the launch market, using both Pegasus and Antares. With Pegasus gone, and Antares still failing to find any customers other than NASA, it doesn’t look like the merger is paying off well for the company.

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1st launch attempt tonight on Pegasus aborted; 2nd attempt a success

6:38 pm

Less than two minutes from launch mission control aborted the launch of the Pegasus rocket because of a communications problem between mission control and the flight crew on L-1011 aircraft.

This is after more than a year’s delay because of a difficult-to-pin-down problem with the Pegasus rocket itself.

They are presently working towards a second launch attempt tonight in about thirty minutes. You can follow this at the link above. Note that the NASA television feed is delayed about two minutes from the comment feed below. It is also filled with NASA’s incessant propaganda and pandering documentaries.

Pegasus has launched ICON and the first two stages have done their job. They are now coasting to the point where the third stage will fire. That coast is complete, the third stage has completed its job and ICON is in orbit.

This is Northrop Grumman’s second launch in 2019, so the leader rankings for the 2019 launch race remains unchanged:

19 China
17 Russia
10 SpaceX
6 Europe (Arianespace)

The U.S. however has regained its lead over China, 20 to 19, in the national rankings.

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Bridenstine’s visit to SpaceX a non-story

6:16 pm

Link here. Essentially he just reiterated his desire to have the private capsules being built by SpaceX and Boeing flying by early next year.

Essentially, the announcements in the last few days by Musk and Boeing about their upcoming testing and launch schedule for both Dragon and Starliner respectively took the steam out of his SpaceX visit.

In fact, I wonder what the politics were behind this. It is almost as if both companies wanted to take the steam out of his appearance here. Most intriguing.

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Ice suspected in both old and young lunar craters

1:46 pm

The uncertainty of science: New research of the craters where ice is suspected to exist on the Moon suggests that the ice is found in both young and old craters, which also suggests both that it comes from multiple sources and that some has been deposited more recently.

The majority of the reported ice deposits are found within large craters formed about 3.1 billion years or longer ago, the study found. Since the ice can’t be any older than the crater, that puts an upper bound on the age of the ice. Just because the crater is old doesn’t mean that the ice within it is also that old too, the researchers say, but in this case there’s reason to believe the ice is indeed old. The deposits have a patchy distribution across crater floors, which suggests that the ice has been battered by micrometeorite impacts and other debris over a long period of time.

If those reported ice deposits are indeed ancient, that could have significant implications in terms of exploration and potential resource utilization, the researchers say. “There have been models of bombardment through time showing that ice starts to concentrate with depth,” Deutsch said. “So if you have a surface layer that’s old, you’d expect more underneath.”

While the majority of ice was in the ancient craters, the researchers also found evidence for ice in smaller craters that, judging by their sharp, well-defined features, appear to be quite fresh. That suggests that some of the deposits on the south pole got there relatively recently. “That was a surprise,” Deutsch said. “There hadn’t really been any observations of ice in younger cold traps before.”

If there are indeed deposits of different ages, the researchers say, that suggests they may also have different sources. Older ice could have been sourced from water-bearing comets and asteroids impacting the surface, or through volcanic activity that drew water from deep within the Moon. But there aren’t many big water-bearing impactors around in recent times, and volcanism is thought to have ceased on the Moon over a billion years ago. So more recent ice deposits would require different sources — perhaps bombardment from pea-sized micrometeorites or implantation by solar wind.

I must emphasize that there is much uncertainty here. Most fundamental is the fact that at this moment we still really do not have a solid confirmation of the presence of ice in these permanently shadowed craters, only orbital data that suggests the presence of hydrogen, which scientists believe can only be there if it is locked in water molecules. This is not yet proven however.

It is intriguing however the evidence suggests ice in both young and old craters. This implies either some on-going process to put water there, or a series of specific but different events over time.

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Ice! Ice! Everywhere on Mars ice!

1:20 pm

Ice scarp in Milankovic Crater
Click for full image.

In January 2018 scientists announced the discovery of exposed ice in a number scarp cliff faces found in the high-mid-latitudes of Mars.

These scarps, which have so far been found in one southern 50-55 degree latitude strip and in one crater, Milankovic, at the same latitude in the north, are important because they are one of the first places on Mars in its lower latitudes where we have found ice actually exposed and visible, not buried like the many buried glaciers very near the surface found in the 30 to 60 degree northern and southern latitude bands.

Since that press announcement, scientists have been monitoring these sites for changes, as well as expanding their survey to see if they can locate more of these scarps.

Overview map

My previous posts on this subject were mostly focused on that southern strip near Hellas Basin, as shown on the map on the right. In reviewing the most recent image download from the high resolution camera on Mars Reconnaissance Orbiter (MRO), I noticed that the only new images of ice scarps were taken in the northern location, in Milankovic Crater, as indicated by the white dot north of Olympus Mons. The first image above shows the north-facing scarp of one of these images, cropped to focus in on the color section where, if you look close, you will see a strip of blue across the base of the scarp. That’s the ice layer, exposed as the scarp sublimates away over time from the north to the south.

over view of all MRO images taken so far in Milankovic Crater

This scarp, labeled #2 on the overview map of Milankovic Crater on the right, is located inside the crater’s eastern rim. The second image, posted below and labeled #1 on the overview map, shows a wider area of several ice scarps located on the inside of the crater’s southwestern rim.

The red boxes in the overview map indicate all the images taken by MRO inside this crater. If you go to the camera’s archive and focus in on Milankovic Crater at 54.5 degrees north latitude and 213.3 degrees longitude, you can then click on each red box to see the high resolution image. In practically every image along the crater’s inside rim can be found numerous scarps.
» Read more

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More “Free Hong Kong” protesters at NBA-Chinese exhibition games

9:30 am

Maybe we aren’t sheep: A group of protesters showed up at a Washington Wizards exhibition game yesterday against a Chinese basketball team with more “Free Hong Kong” signs, chanting the same throughout the game.

NBA officials however continue to kowtow to China’s demand to squelch these American protests, in America:

During the pregame singing of the Chinese national anthem, there were additional protests, with activists holding up signs and yelling, “Free Hong Kong.” One couple displaying a Tibetan flag left after being confronted by security. Yells of “Free Hong Kong” continued to ring out over the course of the game, as protesters migrated to different sections of the arena.

Security confiscated a “Free Hong Kong” sign from a group of protesters sporting the t-shirts. Later in the first quarter, the protesters displayed a smaller sign reading “Google Uyghurs,”—referring to Chinese Muslims incarcerated in state prison camps—which was also confiscated. [emphasis mine]

Meanwhile, the satirical website, the Babylon Bee, captures the stupidity and anti-Americanism of the NBA perfectly: NBA Now Requiring All Players To Stand For Chinese National Anthem, adding that “Anyone who doesn’t comply will be shot, a beloved Chinese custom that should further smooth things over with the authoritarian regime.”

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Mars Express looks at Martian river relic

9:18 am

Mars Express perspective view of Nirgal Vallis
Click for full image.

The Mars Express science team today released a mosaic produced by the orbiter’s high resolution camera of the 300 mile long relic river valley Nirgal Vallis. The image to the right, reduced to post here, is the oblique view that was produced by computer using the camera’s stereo images.

This ancient valley system is named Nirgal Vallis, and was once filled with running water that spread across Mars. By exploring the characteristics of the surrounding craters, scientists estimate the system’s age to be between 3.5 and 4 billion years old.

The part of Nirgal Vallis captured in these images lies towards the western end of the river system, where it is slowly spreading out and dissipating; the eastern end is far less branched and more clearly defined as a single valley, and opens out into the large Uzboi Vallis – the suspected location of a large, ancient lake that has long since dried up.

Nirgal Vallis is a typical example of a feature known as an amphitheatre-headed valley. As the name suggests, rather than ending bluntly or sharply, the ends of these tributaries have the characteristic semi-circular, rounded shape of an Ancient Greek amphitheatre. Such valleys also typically have steep walls, smooth floors, and, if sliced through at a cross-section, adopt a ‘U’ shape. The valleys pictured here are about 200 m deep and 2 km wide, and their floors are covered in sandy dunes; the appearance of these dunes indicates that martian winds tend to blow roughly parallel to the valley walls.

Unlike the high resolution camera on Mars Reconnaissance Orbiter (MRO), which is for taking close-up images of specific surface features, Mars Express is producing a high resolution survey of the entire planet. Its camera does not have quite the same resolution, but as it is taking wider images that’s okay.

What is unfortunate is the European Space Agency’s policy for releasing those images. Unlike MRO, they do not make them all available to the public instantly. Instead, they periodically do press releases like today’s, highlighting a specific region or single large feature. As a result, Mars Express does not get the press it deserves.

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