The Lance Bass yoyo continues. He’s back in training. The Russians have given him one more chance to come up with the money by the end of the week.

Boy, a lot of space stuff today. There’s a story over at Yahoo about treating astronauts for depression during long-term space flight.

“Astronauts in some ways are a lot like prison inmates, they are cooped up in small spaces, have limited access to their families and see the same people everyday. And like prisoners, tasks which merely fill up time are not enough, what is really needed is work which occupies the mind and passes the time quickly.”

While this is a legitimate concern, I have a couple comments.

First, the implications of this for space tourism are zero. They are talking about long-term flights, not short vacations.

Second, some of this is a result of the cramped quarters, which in turn is a result of design choices made early in the program, in which it was more important to justify the development of the Shuttle by using it to launch the station, than it was to build a good station. Having to essentially extrude the entire structure through a fourteen-foot hole (the effective diameter of the Shuttle payload bay), resulted in the lack of spaciousness. Skylab had much more room than the current station did, because it was based on the upper stage of a heavy-lift rocket, rather than being assembled from small pieces that had to fit into the Shuttle.

While having pleasanter quarters wouldn’t eliminate this problem, surely it would alleviate it.

Speaking of rockets versus airbreathers, there’s a nice interview with Aleta Jackson of XCOR over at the Objective American. They get the company name wrong, though–there’s no “C” at the end of the name.

[Thanks to Thomas James who gave me the heads up via email.]

I’m still busy, but I’ll try to get up a few posts today. I’ll see how long I can go before my outrage boiler is about to blow, and I have to vent some steam…

Australia has beaten the US at one of the holy grails of aerospace technology–on a shoestring budget, they’ve demonstrated a supersonic combustion ramjet (scramjet) in flight, for the first time in history. NASA has spent many times as much toward that end and never flown anything.

It’s not that big a deal for space, however, at least in my opinion.

While Leonard David’s article states “scramjet vehicles could launch small space payloads at substantially lower cost” as though it were an established fact, there are actually a lot of reasons to think this is not the case. That people (even otherwise smart engineers) believe this is due to a misunderstanding of the source of the high costs of launch.

If you believe that launch is expensive because rockets have to carry a lot of propellant (needing both oxidizer and fuel), then it makes sense that if you have a vehicle that can get its oxidizer from the atmosphere, it would be much cheaper to operate.

Unfortunately, the underlying premise is false. Rockets aren’t expensive becaue they have to carry a lot of propellant. The propellant costs for a typical rocket is a tiny fraction of the launch cost. Even the fact that the rocket has to be larger in order to carry them is a minor contributor.

As I’ve said repeatedly, the primary driver behind high launch costs is low flight rates, and lack of vehicles specifically designed for high ones. Scramjets are sexy for the “technology uber alles” crowd, but there’s no reason to think that by themselves they can reduce the cost of launch.

Even for a high-flight rate vehicle, it’s likely that their disadvantages will vastly outweigh their benefit of not having to carry oxygen. In order to get their oxygen, they have to spend a lot of time in the atmosphere. Airbreathers moving at hypersonic speeds in the atmosphere have a lot of drag, including the drag of the inlet to the engine itself, and it’s an extremely intense heating environment, as bad or worse in many ways than entry. And once they get out of the atmosphere, they have to fall back on rocket propulsion anyway.

Rockets, on the other hand, get out of the atmosphere as quickly as possible, because they tend to perform better in vacuum, and it reduces the drag and the need for thermal protection during ascent.

Also, airbreathing engines tend to optimize at a certain cruise speed, and perform very poorly in off-design conditions. That’s exactly the propulsion system that you don’t want in a launch system, which is under continuous acceleration. Rocket engines are indifferent to vehicle speed (they’re sensitive only to atmospheric pressure).

Scramjets may have some interesting military applications, but I think that they’re unlikely to play any role in commercial flight, or space launch, for a very long time.

But congratulations to Oz anyway–it’s still a great technical achievement.

I’m on an intensive programming project. Probably little posting today.

Over a decade after the end of the Soviet Union, Russia remains, in the famous words of Winston Churchill, a “…riddle, wrapped in a mystery, inside an enigma…

Which is one of the reasons why it remains hard to tell whether or not Lance Bass is going to fly to the International Space Station this fall.

The other one, of course, is that American entertainment promoters sometimes lie through their teeth.

Russian space expert Jim Oberg sent me this link. For those who don’t read Russian, here’s Jim’s (admittedly rough) translation:

BASS’S FLIGHT WILL BE FULLY FINANCED

American pop-singer Lance Bass?s flight into space to the international space station (ISS) as “tourist-3” will be fully financed, Hollywood producer David Krief stated to journalists. On this they reported on 9 August at Rosaviakosmos.

Krief noted that he reached an agreement with six sponsors, who agreed to contribute to the flight of Bass on the order of 22 million dollars. Simultaneously, according to him, an agreement is concluded with one of the American television channels, which is ready to show in 40 countries the small TV series which will be taken in connection with the forthcoming flight. As they reported in Rosaviakosmos, Krief made his statement, by his acknowledgement, in connection with the fact that “in the Russian mass media have appeared reports that bring into question the forthcoming flight of Lance Bass and his solvency. We have already filmed interesting material on the preliminary selection of the singer for the flight into space at the Russian ‘Institute of Biomedical Problems’ and on his preparation on the simulators at Starry Town near Moscow,” Krief elaborated. “We hope that not less impressing will be the video of the launch of the singer on 28 October of the present year in the space ship Soyuz at the spaceport Baikonur and his 8-day flight on ISS.”

At the same time, as reports RIA-Novosti, the producer Krief by his appearance attempted to attribute the entire fault for the created crisis situation about the payment of the flight of the singer, to the Russian side.

“We completely and scrupulously follow the letter of contract, and have done nothing to reproach,” they noted in the Russian aerospace department. “We sure would like the American side to strictly carry out its obligations in all stages of the contract concluded with us”, they emphasized at Rosaviakosmos.

As Jim notes, it sounds like Mr. Krief is making himself a real pain in the keester over there.

And now for the latest.

Lance is learning that money talks, and BS…doesn’t fly into space.

Over a decade after the end of the Soviet Union, Russia remains, in the famous words of Winston Churchill, a “…riddle, wrapped in a mystery, inside an enigma…

Which is one of the reasons why it remains hard to tell whether or not Lance Bass is going to fly to the International Space Station this fall.

The other one, of course, is that American entertainment promoters sometimes lie through their teeth.

Russian space expert Jim Oberg sent me this link. For those who don’t read Russian, here’s Jim’s (admittedly rough) translation:

BASS’S FLIGHT WILL BE FULLY FINANCED

American pop-singer Lance Bass?s flight into space to the international space station (ISS) as “tourist-3” will be fully financed, Hollywood producer David Krief stated to journalists. On this they reported on 9 August at Rosaviakosmos.

Krief noted that he reached an agreement with six sponsors, who agreed to contribute to the flight of Bass on the order of 22 million dollars. Simultaneously, according to him, an agreement is concluded with one of the American television channels, which is ready to show in 40 countries the small TV series which will be taken in connection with the forthcoming flight. As they reported in Rosaviakosmos, Krief made his statement, by his acknowledgement, in connection with the fact that “in the Russian mass media have appeared reports that bring into question the forthcoming flight of Lance Bass and his solvency. We have already filmed interesting material on the preliminary selection of the singer for the flight into space at the Russian ‘Institute of Biomedical Problems’ and on his preparation on the simulators at Starry Town near Moscow,” Krief elaborated. “We hope that not less impressing will be the video of the launch of the singer on 28 October of the present year in the space ship Soyuz at the spaceport Baikonur and his 8-day flight on ISS.”

At the same time, as reports RIA-Novosti, the producer Krief by his appearance attempted to attribute the entire fault for the created crisis situation about the payment of the flight of the singer, to the Russian side.

“We completely and scrupulously follow the letter of contract, and have done nothing to reproach,” they noted in the Russian aerospace department. “We sure would like the American side to strictly carry out its obligations in all stages of the contract concluded with us”, they emphasized at Rosaviakosmos.

As Jim notes, it sounds like Mr. Krief is making himself a real pain in the keester over there.

And now for the latest.

Lance is learning that money talks, and BS…doesn’t fly into space.

Over a decade after the end of the Soviet Union, Russia remains, in the famous words of Winston Churchill, a “…riddle, wrapped in a mystery, inside an enigma…

Which is one of the reasons why it remains hard to tell whether or not Lance Bass is going to fly to the International Space Station this fall.

The other one, of course, is that American entertainment promoters sometimes lie through their teeth.

Russian space expert Jim Oberg sent me this link. For those who don’t read Russian, here’s Jim’s (admittedly rough) translation:

BASS’S FLIGHT WILL BE FULLY FINANCED

American pop-singer Lance Bass?s flight into space to the international space station (ISS) as “tourist-3” will be fully financed, Hollywood producer David Krief stated to journalists. On this they reported on 9 August at Rosaviakosmos.

Krief noted that he reached an agreement with six sponsors, who agreed to contribute to the flight of Bass on the order of 22 million dollars. Simultaneously, according to him, an agreement is concluded with one of the American television channels, which is ready to show in 40 countries the small TV series which will be taken in connection with the forthcoming flight. As they reported in Rosaviakosmos, Krief made his statement, by his acknowledgement, in connection with the fact that “in the Russian mass media have appeared reports that bring into question the forthcoming flight of Lance Bass and his solvency. We have already filmed interesting material on the preliminary selection of the singer for the flight into space at the Russian ‘Institute of Biomedical Problems’ and on his preparation on the simulators at Starry Town near Moscow,” Krief elaborated. “We hope that not less impressing will be the video of the launch of the singer on 28 October of the present year in the space ship Soyuz at the spaceport Baikonur and his 8-day flight on ISS.”

At the same time, as reports RIA-Novosti, the producer Krief by his appearance attempted to attribute the entire fault for the created crisis situation about the payment of the flight of the singer, to the Russian side.

“We completely and scrupulously follow the letter of contract, and have done nothing to reproach,” they noted in the Russian aerospace department. “We sure would like the American side to strictly carry out its obligations in all stages of the contract concluded with us”, they emphasized at Rosaviakosmos.

As Jim notes, it sounds like Mr. Krief is making himself a real pain in the keester over there.

And now for the latest.

Lance is learning that money talks, and BS…doesn’t fly into space.

…is on full display over at Charles Johnson’s site this morning. He has a letter from a college professor defending the college’s choice of Hanan Ashrawi as keynote speaker at a symposium on the events of September 11.

Well, not exactly, but ISS astronaut Peggy Whitson has been writing a series of “letters home.” Some of the content is a little technical, but it’s also quite descriptive.

One of the really striking things that I had noticed when I first saw the Earth’s horizon, is that the atmosphere that protects the Earth is so small compared to the relative size of the Earth. As you might expect, the appearance of the horizon can vary dramatically, depending on the lighting (sunrise/sunset or just daytime). As the sun rises (approaches us from behind the Earth), initially, only a thin, very bright band of light is visible. A deep royal blue line appears first, followed by the addition of oranges and reds. The rays of light seem to wrap fingers of light around the planet, and reflect from the upper atmosphere downward onto Earth, all within the thin layer of the atmosphere.

I don’t know how anyone can read letters like these and think that there’s no market for public space travel.