Tag: spaceflight

How to drill rocks on Mars

9:02 am

Engineers have found that to properly drill on Mars, Curiosity need only use its lowest power settings.

The new drilling procedures essentially call for the rover to use its lowest energy setting right from the beginning, rather than starting with a setting a few levels up. Curiosity has six settings on its drill that have a nearly 20-fold range in energy. The drill has only been used three times before Curiosity reached Mount Sharp (Aeolis Mons), its ultimate science goal, late last year.

On those three occasions and when the drill was used once at Mount Sharp, Curiosity began its investigations at the drill’s Level 4. The first rock probed at Mount Sharp broke under this pressure. The new algorithm instead starts at Level 1 and only progresses upwards if drilling proves too slow.

The engineers have found that the rocks they have drilled into on Mars have been more fragile that expected, which actually shouldn’t be a surprise, due to the lower gravity. In fact, this one simple fact probably reveals a great deal of important information to geologists about the geology of Mars and how it formed.

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New Mexico legislature advances spaceport sale bill

9:11 am

A state bill to sell Spaceport America, New Mexico’s spaceport built to service Virgin Galactic’s oft-delayed space tourism business, has advanced out of its first committee.

The bill still needs to clear two more committees before it gets a floor vote, but considering the lack of progress at Virgin Galactic, I would not be surprised if it passes. The high hopes that created this spaceport a decade ago have now faded into a boondoggle that New Mexico probably can no longer afford.

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A dozen launches for Arianespace in 2015?

8:39 am

The competition heats up: Arianespace’s launch manifest for 2015 predicts a busy year, with a hoped for pace of one launch per month.

What I like most in the article however is what this paragraph says:

The launch provider won nine contracts for geostationary satellites in 2014, and eight of them are the right size to ride in the Ariane 5’s lower berth, [said Stephane Israel, Arianespace’s chairman and CEO] in an interview with Spaceflight Now.

SpaceX has emerged as the chief rival to the veteran French-based launch company, which started the commercial launch business when it was founded in 1980. SpaceX and Arianespace cinched the same number of commercial launch contracts last year. Partly in response to SpaceX’s bargain prices and partly as an initiative to ensure the Ariane 5 has a steady balance of heavier and lighter payloads, Arianespace cut prices for customers with smaller satellites. [emphasis mine]

I love how competition has lowered costs while simultaneously increasing the launch rate for multiple companies. Before SpaceX arrived to challenge established companies like Arianespace the accepted wisdom in the launch industry was that it was foolish to have more rockets capable of launching at lower costs, because there simply wasn’t enough business to justify it. You’d supposedly end up with idle facilities costing money with no payloads to launch. I always thought that theory was hogwash. Elon Musk and SpaceX have definitely proven it so.

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Work stalls on Mars One robotic missions

7:03 pm

Mars One, the company that just this week announced the 100 finalists in its competition to send 24 people on a one-way trip to Mars, has quietly suspended all work on two robotic missions heralded as precursors to that manned mission.

These facts just add weight to my conviction that the Mars One competition is at the moment nothing more than a reality television show. It is a cool idea for a television show, but journalists should stop selling it as anything more than that.

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Stratolaunch airplane 40% complete

9:28 am

The competition heats up: Stratolaunch has revealed that construction of the gigantic airplane — the largest ever to fly — that will take its rockets into the air is now about 40% complete.

The first flight is still scheduled for 2016. The article also includes some good analysis which indicates the competitive problems Stratolaunch faces:

Its Orbital Sciences-supplied solid-fuel rocket will be able to carry 15,000 pounds to low Earth orbit. But this is about half the lift of the competing SpaceX Falcon 9 and just 30 percent that of a Boeing-built Delta IV. Stratolaunch will be able to orbit only smaller satellites.

Nonetheless, watching this mother-ship take off will be quite breath-taking.

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Ceres comes into focus

9:22 am

Ceres as since on February 12, 2015 by Dawn

Cool images! The Dawn science team has released new even sharper images of the giant asteroid Ceres, taken by Dawn on February 12 at a distance of 52,000 miles.

Though the surface appears to have many of the typical craters, scientists continue to be puzzled by the bright spots. This newest image suggests that they are ice-filled craters, but don’t hold me to that guess. For one thing, why are only a handful of craters filled with ice, and none of the others?

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South Korea unveils its own lunar rover

8:57 am

The competition heats up: South Korea has revealed its preliminary design for a lunar rover, set to launch in 2020 on a Korean-built rocket.

The article does not indicate whether this project has actually been approved or is merely being touted by Korea Institute of Science and Technology, which made the announcement. The cost to build it is estimated to be more than $7 billion, which seems quite exorbitant and over-priced.

Update: I had misread the conversion in the article from U.S. to Korean currency and thought the proposed cost for this mission was way more than it really is, which is about $7 million, a much more reasonable number. Thanks to Edward for the correction.

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A television reality show to pick 24 candidates to go to Mars — one way

10:01 am

The competition heats up? The private effort to choose 24 people to make a one-way flight to Mars has narrowed its candidates down from more than two hundred thousand to 100 finalists.

More here.

As interesting as this effort is, it is very important to remember that it is not an effort to fly these people to Mars. They don’t have the money and no one yet has the technical ability to make the flight. What they are actually doing is putting together a television reality show, where these 100 individuals will compete to be the final 24. If they do it right, which I am somewhat doubtful, the show will be entertaining and scientifically educational.

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Europe’s last ATV leaves ISS

9:44 am

Europe’s last ATV cargo freighter for ISS left the station and burned up over the Pacific Ocean this past weekend.

Because of a technical problem on the ATV, a camera designed to record what happened inside the freighter as it burned up during re-entry was removed prior to undocking so that it could be used instead during a later re-entry.

Meanwhile, instead of supplying ISS with cargo, Europe has decided to meet its contribution to ISS by building the service module for NASA’s Orion/SLS program, which has no plans to ever go to ISS. Note, however, that Europe has also not committed to building more than two service modules, so how Orion/SLS will go beyond Earth orbit after these two modules have been launched remains a mystery.

If you are scratching your head at all this, you are not alone. To me, this one decision alone illustrates quite neatly the utter stupidity of big government-run programs.

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SDO celebrates its fifth year in space with a time-lapse of the Sun

9:40 am

Cool images! In celebration of Solar Dynamics Observatory’s fifth year in space observing the Sun, the scientists at the Goddard Space Flight Center have released a time-lapse movie showing the Sun for the past five years.

Video below the fold. It is astonishing and hypnotic. The movie images were taken one image every 8 hours beginning in 2010. If you compare the Sun at the beginning of the movie with the end, you can see the slow shifting of sunspots/flares from higher to equatorial latitudes, as is normal as the solar cycle ramps up to solar maximum and beyond.
» Read more

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Week long movie of Pluto produced by New Horizons

10:28 pm

Cool images! Using New Horizons’ long range camera scientists have compiled a movie showing Charon and Pluto orbiting each other during the last week of January 2015.

Pluto and Charon were observed for an entire rotation of each body; a “day” on Pluto and Charon is 6.4 Earth days. The first of the images was taken when New Horizons was about 3 billion miles from Earth, but just 126 million miles (203 million kilometers) from Pluto—about 30% farther than Earth’s distance from the Sun. The last frame came 6½ days later, with New Horizons more than 5 million miles (8 million kilometers) closer.

The wobble easily visible in Pluto’s motion, as Charon orbits, is due to the gravity of Charon, about one-eighth as massive as Pluto and about the size of Texas.

Our view of Pluto, and Charon, is only going to get better as New Horizons zooms towards its July fly-by.

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Virgin Galactic opens facility for developing LauncherOne

10:20 pm

The competition heats up: Virgin Galactic announced today the establishment of a new facility to design and build the company’s LauncherOne rocket, aimed at putting into orbit very small cubesats at a very low price.

LauncherOne is an air-launch system for satellites weighing up to 225 kilograms. The system will use the same aircraft, WhiteKnightTwo, as the company’s SpaceShipTwo suborbital vehicle, but replaces SpaceShipTwo with a two-stage launch vehicle using engines fueled by liquid oxygen and kerosene.

At the Federal Aviation Administration Commercial Space Transportation Conference Feb. 4, William Pomerantz, vice president of special projects for Virgin Galactic, said the company has already tested engines and other “core infrastructure” of LauncherOne. “We are a fairly vertically-integrated team,” he said. “We really do control a lot of the production in house.”

As the article notes, Virgin Galactic is investing in OneWeb, which hopes to launch a constellation of 650 cubesats to provide broadband communications worldwide. It is likely that a partnership between the two companies exists to put many of those cubesats into orbit with LauncherOne.

This announcement also suggests to me that Virgin Galactic is beginning to shift its gaze from suborbital space tourism to orbital launch services, and in doing so is looking for new ways to make its investment in WhiteKnightTwo pay off.

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Another Falcon 9 launch success

4:14 pm

The competition heats up: A Falcon 9 rocket today successfully put a NASA solar observation satellite into orbit.

They have also said that they have achieved splashdown of the first stage, though no details yet on how soft that splashdown was.

Update: SpaceX reports that “the first stage successfully soft landed in the Atlantic Ocean within 10 meters of its target. The vehicle was nicely vertical and the data captured during this test suggests a high probability of being able to land the stage on the drone ship in better weather.”

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No barge landing attempt today for Falcon 9

2:15 pm

Because of high seas SpaceX will not attempt to land its Falcon 9 first stage on its floating barge today.

The drone ship was designed to operate in all but the most extreme weather. We are experiencing just such weather in the Atlantic with waves reaching up to three stories in height crashing over the decks. Also, only three of the drone ship’s four engines are functioning, making station-keeping in the face of such wave action extremely difficult.

They will still attempt a soft splashdown of the first stage in the ocean.

Though this kind of repeated soft splashdown test is essential to prove their ability to bring the first stage down safely, it certainly isn’t as exciting as landing the first stage on a barge. Nonetheless, in previous attempts they have been unable to get really good video of the soft splashdown. Maybe they will do better this time, though the high seas suggest it won’t be easy.

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Rosetta preps for close fly-by of Comet 67P/C-G

9:12 am

Single frame image

Cool image time! In preparation for a close fly-by of Comet 67P/C-G on Saturday — where it will zip past the comet less than three miles above its surface — Rosetta has eased away to a distance of about 60 miles, allowing its navigation camera to snap its first single frame image since the spacecraft’s initial close approach last summer.

The image brightness has been adjusted to make the plume more obvious. Also, if you look closely at the full resolution version of the image, it is possible to see the dusty material that forms the coma surrounding the nucleus.

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The last two satellites in Russia’s missile warning constellation have failed.

8:55 am

In January the last two satellites in Russia’s ballistic missile warning system shut down, with the first of the next generation replacement constellation not scheduled to launch until June.

“Oko-1 was part of Russia’s missile warning system. The system employed six satellites on geostationary and highly elliptical orbits. The last geostationary satellite got out of order in April last year. The two remaining satellites on highly elliptical orbits could operate only several hours a day. In the beginning of January, they also went out of order,” Kommersant said.

The new generation early warning satellite Tundra was planned to be launched in 2013. However, the launch was postponed several times as the apparatus was not ready to be put into operation, sources in the aerospace industry told the daily.

Increasingly I am reminded of the Cold War, when our competition was the bloated, inefficient, and poorly managed Soviet Union. The communist nation was definitely a threat, as they got a lot accomplished through sheer brute force and determination. Their long term problem was that it was an amazingly inefficient system, guaranteed to eventually fall apart.

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Europe test flies its engineering prototype space plane

8:44 am

The competition heats up: Europe today successfully launched and landed its Intermediate Experimental Vehicle (IXV) space plane.

More details here. And here.

As of 9 pm (Eastern) Wednesday the recovery ship was still “hurrying” to reach the ship, which was being held afloat with “balloons.” Update: The spacecraft has been retrieved.

This prototype is not full scale. It is only about 16 feet long, and was built as a testbed. Whether Europe follows up with a full scale version remains completely unknown. I am skeptical, as this program reminds me of many deadend NASA experimental programs like it, used to try out cool engineering technologies as well as provide pork to Congressional districts without any plans to proceed to the real thing. In the case of IXV, the Italians got most of the pork.

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