Space

Updated Spaceflight Bill

The latest revision of what used to be H.R. 3752 has been released by Sen Inhofe. The new bill is S. 2772 (no static link: go to Thomas and search for “s2772”). Changes are to the definition of suborbital rocket:

`suborbital rocket’ means a vehicle, rocket-propelled in whole or in part, intended for flight on a suborbital trajectory whose thrust is greater than its lift for the majority of the rocket-powered portion of its flight.

I’d prefer “thrust greater than weight,” since lift is a bit harder to keep track of without extensive instrumentation, but that’s just a matter of preferring the easier quantity to measure. Still, it’s a good definition. This eliminates the problem that Rocketplane Limited (formerly Pioneer Rocketplane) had with the definition.

There are some other relatively minor changes, and then this:

The Secretary of Transportation shall not require any additional license, permit, certificate, or other legal instrument be obtained from the Department of Transportation for any activity, including flight and return, for which a license or experimental permit has been issued under this chapter.

This is a nice addition, since it further lowers the bar for flight testing of suborbital vehicles. The experimental permit referred to is similar to the experimental permit for flight testing of aircraft, with the same intent: to lower the regulatory bar to new vehicle development. The entire homebuilt aircraft industry is built on the existence of aviation experimental permits. Anyone contemplating building their own suborbital spacecraft should read the portion of S.2772 dealing with experimental permits (section 3(c)(8) of the bill, about halfway down the page). Read the whole thing 🙂

Hat tip to Randall Clague of XCOR for letting me know about this development.

Political Commentary

A Setup For A Slander Suit?

One would like to think that there’s no lower form of life in the Democrat party than Lanny Davis. Unfortunately for hopes of a livable world, there are worse.

I watched the segment myself, and I hope that Mr. O’Neill (a lawyer himself) knows what kind of smear machine he’s up against, and has adequately prepared himself. Based on what happened this weekend, he may indeed have. I’d like nothing better than for Mr. Davis, at long last, to finally have to pay at least a financial penalty for his vicious calumnies.

What was particularly irritating about the Hannity & Colmes show (which is often the case) was how ineffective Hannity was in arguing with him.

Lanny consistently referred to the Swift Boat as a “ship” (a term that any Navy vet would find laughable). The intent is obviously to imply that Kerry was commander of a vessel in which the crew, and the crew alone, worked, ate, slept, laughed, shat, and most importantly, fought with him, and that no one else was in a position to know what happened on his “ship.”

That is nonsense. It wasn’t a ship. It was a boat (as implied by its name), and not one on which the men lived. They lived on shore with others who got up every day and patrolled by day, often in close proximity to each other.

If one accepts the Kerry defenders’ arbitrary definition of “served with,” no one served with George W. Bush except the people who flew in his (single-seat) F-102 with him (i.e., no one). One doesn’t have to be in the same squad, or platoon, to “serve with” someone. There are higher levels of the hierarchy in which people still interact, often on a daily basis. The Swift Boat Vets all served together, despite the mud you’ll see slung over the next days and weeks as this story continues to grow more legs than a mutant millipede.

The more this goes on, the more hysterical the defenders become (Colmes: “Isn’t this despicable–how can they impugn the honor of a medal winner?” Ignoring, of course, the fact that many of those testifying against Kerry have their own medals, but Alan has no problem with smearing them as liars).

As I said, this is right out of the Clinton playbook. Ad hominem, trash the accusers, obfuscate the facts, use misdirection, like any skilled magician. At least this time, the nuts aren’t sluts–they’re attacking veterans and medal winners, not women victimized by Bill Clinton…

I suspect that this time, the illusion won’t stand up.

[Update at 10 PM PDT]

I see that Snopes has already leapt to his defense, emphasizing the evidence in his favor, and ignoring any against. I hope that this will also blow up the myth about them being non-partisan.

Technology and Society

Steam kills

An accident at a nuclear plant kills four workers. It was a steam leak, but that won’t stop the antinuclear hysteriacs from flipping out. Of course, nothing will stop the antinuclear hysteriacs from flipping out. OTOH, it’s worth pointing out that the failure of the steam system lead to an appropriate controlled shutdown of the core, just the way it should. In a sane world the headlines would read “Nuclear reactor safety system works as designed,” and the whole thing would lead to no more than a call to reemphasize the safety guidelines for working with high pressure steam that have developed over the last couple of centuries. My prediction is that the accident will turn out to have been preventable had those guidelines been followed. Steam is dangerous, but controllable, and it can be safely harnessed. Just like nuclear power.

Political Commentary

Hyperbole

Last night I heard some Democrat flack claim that the current economy is the worst since Herbert Hoover.

Are people so historically ignorant that this kind of stuff is effective? For me, it’s totally counterproductive, and just makes me want to see Kerry, and all Dems lose all the more.

General Science

Alvin to be Retired

Via a story on NPR’s All Things Considered (last story on the page: audio link) the intrepid research submarine Alvin is going to be replaced with a larger sub capable of deeper dives and longer stays at depth.

Alvin is a truly storied scientific instrument, one of those few machines that almost singlehandedly revolutionize a scientific field. I’m looking forward to seeing what her successor will do.

This post isn’t entirely about the excellence of Alvin – I also have a little bit of an axe to grind. Let me point out that, in this day of submarine ROVs with ever increasing capabilities, the thing that oceanographers and deep ocean biologists want is a machine that will enable them to go in person into the depths. A dive in the new sub will take up to ten hours, cramped up in a space about the size of the interior of a VW beetle, with all manner of projections and angles to increase the discomfort. Internal temperatures during a dive hover in the neighborhood of zero celsius, and if something goes seriously wrong, you die. Much better to send a machine, don’t you think? But no: the people best equipped to make the judgement, the people who will be trading sitting in front of a computer in a climate controlled room, sipping fresh brewed coffee for a cramped, cold, dangerous machine that will put them right next to what they want to study – they choose the sub. Why? because you simply do better science on site than you can remotely, and it’s going to be that way for the foreseeable future. The lessons for space exploration should be obvious. I’m looking at you, Bob Park.

Dismounting my hobbyhorse and returning to Alvin, there’s an interesting story in the book Water Baby. When Alvin was under construction three pressure spheres were made and tested. The best (no. 2) was used on the sub, and sphere no. 1 was to be tested to destruction. The test vessel was a large oil filled tank which could be pressurized to simulate dives to various depths. The 40,000 pound lid of the vessel screwed into place on top. The crush test of sphere no. 1 was also going to be the first test of the pressure tank above 4000 psi. From the book:

At 4300 psi there was an explosion. In the next second the engineers calculated the probable trajectory of the tank’s lid, concluding that 40,000 pounds of steel were headed for the tin roof above them. They ran, all of them headed at once to the only other door at the far end of the building. “I remember the instantaneous transport of myself, like a Tibetan monk using the mind to will myself out of that building” Walsh said.
[…]
The super tank looked oddly untouched and its 40,000 pound lid, undamaged, was in place. The deadman was broken and its 40 foot cable was gone. When they removed the cover, they saw that the shrapnel had come from the upper threaded portion of the tank. The lid had shot up at least 40 feet and dropped back onto the tank, driving it about three feet deeper into the ground.

In the tank sat sacrificial sphere no. 1 undamaged.

The test tank failed at a pressure equivalent to 9600 feet, testing the sphere judged to be of the lowest quality.

Biting Commentary about Infinity…and Beyond!