Tag: spaceflight

LRO finds lunar impact site for Apollo rocket stage

10:03 pm

Lunar Reconnaissance Orbiter has located the impact site for the Apollo 16 rocket booster that, like four other boosters, had been deliberately crashed on the surface so the Apollo seismometers could use the vibrations to study the Moon’s interior.

The other impact sites had been found already, but Apollo 16 was harder to pin down because contact with the booster had ended prematurely so its location was less well known.

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Oblique view of Ceres’s bright spots

3:58 pm

Occator Crater on Ceres

Cool image time! The image above is a newly released image of Occator Crater on Ceres, the location of the dwarf planet’s double bright spots, taken by Dawn in October.

I have cropped the image to focus on the crater and the bright spots. Unlike most previous images, this one is taken from an angle to bring out the topography, which also confirms what other data had shown, that the bright spots are not on top of any peaks. If anything, they appear to be located at low spots in the crater, as that previous data had suggested.

Though the spots are not really very bright, they are very bright relative to the dark surface of Ceres. This is why it is difficult to get a good image of them. Either you have to over-expose the spots to see the surface details around them, or under-expose the surface around them to see some detail in the spots. This image tries to find a middle ground.

Eventually they will move Dawn in very close to try to get higher resolution images of the spots alone. At that time we might finally be able to get a better understanding of what causes them.

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Lisa Pathfinder lifts off

8:42 am

Lisa Pathfinder, an experimental probe to test the technologies for measuring gravity waves in space, was successfully launched today by Arianespace’s Vega rocket.

At its core is a pair of free-floating, identical 46 mm gold–platinum cubes separated by 38 cm, which will be isolated from all external and internal forces acting on them except one: gravity. “LISA Pathfinder will put these test masses in the best free-fall ever produced in space and monitor their relative positions to unprecedented precision,” says Karsten Danzmann, who also is the Co-Principal Investigator for the LISA Pathfinder Technology Package, the scientific heart of the satellite. “This will lay the foundations for future gravitational-wave observatories in space such as eLISA.”

It is important to point out that this probe will not measure gravity waves. It doesn’t have the sensitivity to do it. Instead it is testing the engineering, as described above, for building a later probe that will have sensitivity. To gain that sensitivity the floating cubes must be much farther apart, and likely will require several independent satellites flying in formation.

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Next Falcon 9 first stage to touch down on land?

12:16 am

The competition heats up: SpaceX is considering an attempt to land its Falcon 9 first stage on land in its next launch in two weeks.

Carol Scott, who works technical integration for SpaceX within NASA’s Commercial Crew Program, told reporters here at the Cape Canaveral Air Force Station today that SpaceX’s first attempt at a land-based rocket landing may be coming sooner than the public expects. “You know how they want to fly the stage back, right? Their plan is to land it out here on the Cape [Canaveral] side,” Scott told reporters.

The company declined to comment on Scott’s remarks, which are vague enough to leave them plenty of wiggle room. Not that it matters. Even if they attempt the next first stage landing on a barge, a landing on land will soon follow. It is only a matter of time.

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The first Ceres atlas

3:46 pm

Ceres's first atlas

Using data during Dawn’s first orbit of Ceres German scientists have compiled a global atlas of the dwarf planet.

The images used for this are the wide angle survey images, which won’t show the smallest objects because they were taken from about 2,700 miles above the surface. Nonetheless, this atlas gives scientists a baseline for studying the giant asteroid.

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Deposed XCOR founders form new company

9:04 am

The competition heats up? The founders of XCOR, who only weeks ago were pushed out in a management reorganization, have teamed up again to form a new company.

Forgive me if I am as skeptical of this new company as I am of XCOR. I’ve looked at all the news articles describing this new company, and see little there that excites me. Lots of talk about new management ideas and agile production efforts, but in the end nothing that suggests anything revolutionary.

These guys had more than a decade at XCOR to produce something and essentially never did. Why should I think they will do it now, just because they are hanging a different company name on their sign?

Don’t get me wrong. I will be the first to celebrate if they make something happen. I just remain exceedingly skeptical.

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Russia describes its planned first manned Moon mission

8:46 am

To accomplish its first manned lunar landing, tentatively set for 2029, Russia will have to launch six Angara rockets.

According to the source, the launches are planned to be carried out in pairs from the Vostochny cosmodrome (the Amur region in Russia’s Far East) and the Plesetsk cosmodrome (Archangelsk region in the northwest) with small intervals between the blast-offs. Under the proposed scheme, after the orbit placement, the complex with a total weight up to 70 tonnes will be docked with the manned spacecraft, after which it will fly to the Moon. A payload of 18-20 tonnes will be delivered to the lunar orbit by the end of the mission.

According to a preliminary plan, Russia’s first manned flight to the Moon is possible in 2029. One year ahead of that it is planned to conduct a flight around the Moon, the testing and qualification of space systems for the future manned landing. However, this project may become a reality only if the work to create a new-generation manned transport spacecraft, the Angara-A5 rocket, lunar boosters and other needed rocket and space technology and infrastructure is included in the draft Federal Space Program for 2016-2025.

The final draft Federal Space Program, however, has not yet been approved. This story is obviously a lobbying effort within Russia to get this lunar mission included in that master plan.

What strikes me most about all this is the timing. The big national space programs, Russia, China, and NASA’s SLS, are all aiming for big lunar missions in the late 2020s. All will spend a lot of money for a very limited number of flights, mostly single stunts that merely demonstrate that they can do it. None of these programs will have much staying power on the Moon.

Private space is likely aiming for the Moon as well, and will likely be capable of getting there about the same time. However, private space will be cheap and designed to go many many times (for profit). Watching this race between nations and private companies is going to be quite fascinating. And unlike the 1960s space race, which was a race between two different top-down government programs, this 2020s space race will be between bottom-up capitalism versus top-down government.

I think in the end the governments will be very embarrassed. They will either lose, or act to squelch their private competition.

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The jets of Enceladus

9:09 am

Enceladus's jets

Cool image time! The image above, taken in June by Cassini, shows the night side of Saturn’s moon Enceladus, framed by Saturn’s rings, and faintly showing the jets of water coming from its south pole. To show it here I have cropped it and reduced it somewhat, as well as brightened the jets to make them more visible.

The release notes how the image compares the frozen water of Saturn’s rings and the liquid activity of Enceladus’s jets. I note how the image is simply beautiful. Be sure to click on the link to see the full resolution image.

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Mainstream media outlet notices possible news!

9:40 am

Last week President Obama signed the revisions to the Commercial Act that is being touted as allowing Americans property rights in space.

I have been following the news coverage of this event, and even though there have been many articles incorrectly pushing the above spin, only today was there a news story that finally noticed that these touted property rights would violate the Outer Space treaty.

The content of the second link above, though it notices the possible violations to the Outer Space treaty, is also still a pitiful example of journalism. It is very clear from reading the article that no one involved in writing it (the article’s byline is CBC News) ever read the newly passed law. I have, and found that nowhere in it does it actually grant Americans property rights in space. What it does do is demand that the executive branch support that idea and write a number of reports and studies to demonstrate that support.

The goal I think of this new law is to begin the political process towards the U.S. eventually pulling out of the Outer Space treaty. Congress is essentially stating that it doesn’t agree with the language of that United Nations treaty, and it wants the U.S. government to begin the process of either getting it changed, or preparing to pull out. (The treaty does provide language allowing nations to pull out. You give one year’s notice, and then do so.)

It would be nice if journalists who write about this subject did the simple and easy research necessary for reporting it intelligently.

Until they do, however, I guess people will just have to come here (written with a grin).

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The launch cost of Japan’s H-IIA rocket

9:51 am

The competition heats up: Yesterday’s launch of Japan’s first commercial payload on its upgraded lower cost H-IIA rocket suggested that they are now a serious player in the competitive launch market. What the earlier articles didn’t tell me was the cost they charge to launch a payload on H-IIA.

This article today states that each launch costs 10 billion yen, which translates to about $80 million. That is about $10 million more than SpaceX charges for its Falcon 9, but is certainly cheaper than many other rocket companies. At this price they have a chance of grabbing some of the launch market, but to really compete they need to cut that cost even more, which the article suggests their next rocket will succeed in doing: “The government is developing a new core rocket named the H3, whose launches are expected to cost only about a half of the H2A.”

They do not say whether H3 will be reusable, but at $40 million per launch it will be the cheapest rocket on Earth. That it is government developed however makes me skeptical they will succeed. We shall see. What is clear, however, is that the competition is certainly encouraging the lowering of cost.

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XCOR founders step down

8:49 am

In the heat of competition: Three of XCOR’s founders are leaving the company, even as it struggles to finish its Lynx suborbital spacecraft.

XCOR Aerospace said in a statement that Jeff Greason and Dan DeLong, the chief technology officer and chief engineer of the company, respectively, were “stepping back” from those positions “to turn their attention to pursue other interests.” A third co-founder, Aleta Jackson, was not mentioned in the release but is also leaving the company.

I am saddened that these individuals will not be there should XCOR finally succeed in finishing Lynx and flying it. At the same time, the fact that they are leaving at this stage suggests strongly to me that Lynx is nowhere close to flying, and that the company bean-counters have realized this and have now been forced to take action.

As regular readers to BtB know, I have always been extremely skeptical of XCOR’s effort. I have always wanted them to succeed, but in casting a cold eye at their progress I have never had much confidence that they would. Today’s story sadly adds strength to my skepticism.

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Blue Origin lands first stage rocket vertically

8:34 am

The competition heats up: Yesterday Jeff Bezos’s company Blue Origin did its second test flight of its New Shepard suborbital rocket and capsule, and successfully recovered the rocket’s first stage, landing the stage vertically using its rockets.

As Jeff Bezos wrote at the link:

Rockets have always been expendable. Not anymore. Now safely tucked away at our launch site in West Texas is the rarest of beasts, a used rocket.

This flight validates our vehicle architecture and design. Our unique ring fin shifted the center of pressure aft to help control reentry and descent; eight large drag brakes deployed and reduced the vehicle’s terminal speed to 387 mph; hydraulically actuated fins steered the vehicle through 119-mph high-altitude crosswinds to a location precisely aligned with and 5,000 feet above the landing pad; then the highly-throttleable BE-3 engine re-ignited to slow the booster as the landing gear deployed and the vehicle descended the last 100 feet at 4.4 mph to touchdown on the pad.

When you watch the video you’ll see that we took the liberty of engineering all the drama out of the landing.

I have posted video of the flight below the fold.

SpaceX has been attempting this with its orbital Falcon 9 rocket for the last two years. They have come very close, hitting their target and almost landing. They plan to try again in December. Blue Origin however has beaten them to it, even if they have done it with a suborbital rocket.This demonstrates unequivocally that the concept is sound and that a rocket’s first stage can be recovered. It also demonstrates that of all the rocket companies in the world, SpaceX and Blue Origin are in position to dominate for at least the next decade. I am very confident that SpaceX will succeed in its efforts to recover its first stage. I am also very confident that Blue Origin’s plans to upgrade New Shepard into an orbital rocket/capsule will proceed quickly.

In both cases, the companies will then move forward, capable of recovering and reusing significant parts of their rockets, thus making it possible to significantly lower the launch cost and thus charge their customers less. No one else is in this position, or even close to it. The launch market will belong to them.
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Spat between senators over Russian rockets

11:11 pm

Pig fight! In response to Senator Richard Shelby’s (R-Alabama) effort, with the lobbying aid of ULA, to slip an amendment into a budget bill that would allow ULA to use Russian engines in its Atlas 5 indefinitely, Senator John McCain (R-Arizona) has written a scathing letter condemning the effort.

In a Nov. 19 letter, McCain asked Cochran to “respect the well-informed work my committee took” and to avoid the “year-over-year relitigation” of the engine issue.“Recent attempts by the incumbent contractor to manufacture a crisis by prematurely diminishing its stockpile of engines purchased prior to the Russian invasion of Crimea should be viewed with skepticism and scrutinized heavily,” McCain wrote in the letter, a copy of which was obtained by SpaceNews. “Such efforts should not be misconstrued as a compelling reason to undermine any sanctions on Russia while they occupy Crimea, destabilize Ukraine, bolster Assad in Syria, send weapons to Iran and violate the 1987 Intermediate Range Nuclear Forces Treaty.”

McCain is no saint when it comes to pork, even if he is right on this issue. Shelby however is and has always been a pork pig. He has always put the needs of local companies ahead of the needs of the country. This story illustrates this perfectly.

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NASA contracting development of new ion/nuclear engines

8:51 am

The competition heats up: NASA has awarded three different companies contracts to develop advanced ion and nuclear propulsion systems for future interplanetary missions, both manned and unmanned.

These are development contacts, all below $10 million. However, they all appeared structured like NASA’s cargo and crew contracts for ISS, where the contractor does all of the development and design, with NASA only supplying some support and periodic payments when the contractor achieves agreed-upon milestones. Because of this, the contractors will own the engines their develop, and will be able to sell them to other customers after development, thereby increasing the competition and innovation in the field.

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Dawn’s first close look at Ceres’s poles

10:59 am

Ceres's poles

The Dawn science team have released their first images of the north and south poles of Ceres.

The region around the south pole appears black in this view because this area has been in shade ever since Dawn’s arrival on March 6, 2015, and is therefore not visible. At the north polar region, craters Jarovit, Ghanan and Asari are visible, as well as the mountain Ysolo Mons. Near the south pole, craters Attis and Zadeni can be seen.

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Another company enters the orbital remote sensing field

6:56 pm

The competition heats up: A California company, Hera Systems, has announced plans to launch 9 cubesats late in 2016 to provide commercial imagery of the Earth.

Hera Systems of San Jose, California, is planning to launch nine cubesat-class spacecraft in late 2016 that will be able to provide images at resolutions of up to one meter over several spectral bands, as well as video. That initial constellation could grow in time to up to 48 satellites, allowing the company to take images of the same location several times a day.

This field is becoming very crowded. Either there will be a significant shake-out, or we will see a burst of profits that will invigorate it even more. The companies all seem to think there is enough business to justify their existence.

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Bezos gives museum recovered Saturn V engines

6:51 pm

Jeff Bezos today personally delivered to the Seattle Musuem of Flight the restored remains of two Apollo Saturn V engines that his company recovered from the ocean floor in 2013.

Over the course of two and a half years, the experts at the museum worked to stabilize the F-1 engine parts, halting the corrosion caused by the salt water. The engines were not restored, however. Rather they were conserved in their “as found” condition to preserve their full history, from the sky to the sea.

In the process, the Cosmosphere was able to reveal and research the parts’ serial numbers and identify the flight history for most of the large parts. The conservators were able to tie the components to the Apollo 11 and Apollo 12 missions in 1969 and to Apollo 16 in 1972.

The Apollo 11 components will be donated to the Smithsonian National Air and Space Museum in Washington.

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ULA is adding cubesat capability to its Atlas 5

6:45 pm

The competition heats up: ULA has announced that they are adding a cubesat launch capability to their Atlas 5 rocket so that by 2017 they will be able to place in orbit as many as 24 cubesats per launch, as secondary payloads.

In addition, the company will offer universities to compete for six launch slots at no charge.

“ULA will offer universities the chance to compete for at least six CubeSat launch slots on two Atlas V missions, with a goal to eventually add university CubeSat slots to nearly every Atlas and Vulcan launch,” noted Tory Bruno, ULA president and CEO. “There is a growing need for universities to have access and availability to launch their CubeSats and this program will transform the way these universities get to space by making space more affordable and accessible.”

This offer is ULA’s way of trying to capture some of that growing smallsat market that companies like Rocket Labs and Virgin Galactic are trying to grab.

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Japan’s Venus probe zeros in on Dec 7 arrival

9:53 pm

A Japanese Venus research spacecraft, dubbed Akatsuki, has completed all its preliminary course corrections and is ready for a December 7 orbital insertion attempt, the second since the spacecraft’s main engine failed during the first attempt in 2010.

The space probe accomplished its last targeting maneuver Oct. 11 to aim for its Dec. 7 arrival at Venus, and all systems are go for the encounter, said Takeshi Imamura, Akatsuki’s project scientist at JAXA’s Institute of Space and Astronautical Science. Imamura said the Akatsuki spacecraft, named for the Japanese word for dawn, will zoom 541 kilometers, or 336 miles, above Venus for a 20-minute insertion burn using the probe’s secondary attitude control thrusters. Japanese ground controllers have programmed the probe to use the backup rocket jets after a faulty valve knocked out Akatsuki’s main engine during its first attempt to enter orbit around Venus in December 2010.

Four of the eight attitude control thrusters aboard Akatsuki will fire for 20 minutes and 33 seconds to slow the spacecraft down enough for Venus’ gravity to pull it into an egg-shaped orbit that skims above the planet’s cloud tops on the low end and ranges several hundred thousand miles in altitude at peak altitude. The reaction control thrusters, originally designed to help point the spacecraft, were not rated for such a hefty propulsive maneuver.

To make this second chance possible, they have spent the last five years improvising. First they dumped the fuel from the now-useless main engine to make the spacecraft lighter so that the attitude control thrusters could handle the maneuvers. Then they used those thrusters repeatedly to adjust the course to bring Akatsuki back to Venus after it zipped past in 2010.

If they succeed in getting it in a useful orbit on December 7, it will be real triumph for these Japanese engineers.

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Short circuit on ISS

8:39 am

An electrical failure on ISS has deprived ISS of one of its main circuits.

They have alternative wiring and are using that, so that all equipment is presently functioning. However, a similar failure in 2014 required a spacewalk to fix. Moreover, they don’t have the necessary spare parts on board to fix the problem. They will have to be shipped up, and it is too late to put them on the Cygnus freighter now packed and ready for launch on December 3.

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Curiosity heads for the dunes

7:10 pm

Bagnold Dunes

The Curiosity science team has decided to send the rover towards some large active dunes, visible in its journey ahead up Mt. Sharp.

On its way to higher layers of the mountain where it is investigating how Mars’ environment changed billions of years ago, NASA’s Curiosity Mars rover will take advantage of a chance to study some modern Martian activity at mobile sand dunes.

In the next few days, the rover will get its first close-up look at these dark dunes, called the “Bagnold Dunes,” which skirt the northwestern flank of Mount Sharp. No Mars rover has previously visited a sand dune, as opposed to smaller sand ripples or drifts. One dune Curiosity will investigate is as tall as a two-story building and as broad as a football field. The Bagnold Dunes are active: Images from orbit indicate some of them are migrating as much as about 3 feet (1 meter) per Earth year. No active dunes have been visited anywhere in the solar system besides Earth.

In the image on the right the target dune is in the center beyond the dark ridge line in the foreground. It looks kind of like a pointed mesa. the dark sandy area on the center right just below the dark ridge line in the center of the image. (Newer images released today gave me a more correct idea of the dunes as shown in this image.) Click here to see the full image. The rover is presently about 200 yards from the first dune, and should reach it in the next few days.

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Enceladus rises over Dione

10:13 am

Enceladus rising behind Dione

Cool image time! The image on the right was taken by Cassini in September 2015, and shows two Saturn moons, bright Enceladus partly blocked by darker and nearer Dione.

Although Dione (near) and Enceladus (far) are composed of nearly the same materials, Enceladus has a considerably higher reflectivity than Dione. As a result, it appears brighter against the dark night sky.

The surface of Enceladus (313 miles or 504 kilometers across) endures a constant rain of ice grains from its south polar jets. As a result, its surface is more like fresh, bright, snow than Dione’s (698 miles or 1123 kilometers across) older, weathered surface. As clean, fresh surfaces are left exposed in space, they slowly gather dust and radiation damage and darken in a process known as “space weathering.”

The image doesn’t contain any earth-shattering discoveries. It is simply beautiful. And in these dark times, seeing beauty is sometimes the most important thing one can do.

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