spaceflight – Page 380 – Behind The Black

Virgin Galactic says LauncherOne will make its first flight in 2016

March 16, 2015 9:35 pm Robert Zimmerman

The competition heats up: The CEO of Virgin Galactic, George Whitesides, revealed at a satellite conference that they are on schedule for LauncherOne to make its first flight before the end of 2016.

The company recently started hot-fire tests of an engine called Newton 3 developed by Virgin Galactic for the first stage of LauncherOne, Whitesides said. That engine, capable of generating 265,000 to 335,000 newtons of thrust, uses liquid oxygen and kerosene propellants. “We’re now to the point where we’re very confident that we can build a very affordable rocket,” Whitesides said. After his speech, he said the company was on schedule to begin flights by the end of 2016, with even initial test flights likely carrying some satellites.

That it is Whitesides and not Richard Branson saying this makes me more confident that it is true, though I remain very skeptical of any promise made by anyone these days at Virgin Galactic. However, the impression from this article confirms an earlier impression I have had, that the company is beginning to shift its resources away from suborbital tourism with SpaceShipTwo and towards orbital launch services with LauncherOne. Branson had announced LauncherOne as a concept in 2012, but only recently have we begin to hear of any actual work on it.

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A Mars One finalist accuses the company of fraud

March 16, 2015 9:24 pm Robert Zimmerman

One of the finalists in the one-way-to-Mars competition by the company Mars One has now accused the company of fraud.

Most egregiously, many media outlets continue to report that Mars One received applications from 200,000 people who would be happy to die on another planet — when the number it actually received was 2,761.

As [finalist Joseph] Roche observed the process from an insider’s perspective, his concerns increased. Chief among them: that some leading contenders for the mission had bought their way into that position, and are being encouraged to “donate” any appearance fees back to Mars One — which seemed to him very strange for an outfit that needs billions of dollars to complete its objective. “When you join the ‘Mars One Community,’ which happens automatically if you applied as a candidate, they start giving you points,” Roche explained to me in an email. “You get points for getting through each round of the selection process (but just an arbitrary number of points, not anything to do with ranking), and then the only way to get more points is to buy merchandise from Mars One or to donate money to them.”

There’s more at the link. Essentially, the whole operation has apparently devolved into a petty scam to milk money from the finalists themselves.

None of this surprises me. From the beginning I considered the whole proposal unrealistic, which thus almost forced the people in charge to commit fraud.

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New results from Messenger at Mercury

March 16, 2015 12:53 pm Robert Zimmerman

As Messenger nears the end of its lifespan orbiting Mercury, the project scientists have put together a slate of talks on what they have learned, presented today at the 46th annual Lunar and Planetary Science Conference in Houston.

The images that go with these presentations can be found here.

The image on the right is a close-up of the mysterious and unexpected hollows that Messenger found scattered everywhere on Mercury’s surface. According to today’s presentation, scientists now believe they are very recent features, formed when material with a lower boiling point evaporated away because of Mercury’s harsh and very hot environment. Imagine for example a vein of dry ice in a rock crack. The temperature rises above freezing and the dry ice evaporates. And like the convection bubbles in tomato sauce as it simmers, some of that evaporation pushes its way up by popping out a bubble and leaving behind a hollow.

In the case of Mercury the material is likely not dry ice, though scientists as yet are unsure what it is.

They are also presenting talks on magnesium on Mercury, the planet’s many scarps, and detailed observations of the permanently shadowed polar craters that might have water-ice in them.