Company planning biggest rocket since man on moon

Apr 11, 2011 63 Replies

C'mon, Dan. You know better than that. There is a place in historical comparisons for constant dollars (dollars adjusted for inflation; it doesn't matter what year you use as a base), and current dollars (actual dollars paid in or paid out at the time the payment occurred). Unless you're talking specifically about inflation itself, and trying to isolate it from any meaning about what we earn or what we pay out, there's little use for current dollars. That's why you seldom see it in economic discussions.

If we priced these things in terms of a market basket of food, or clothing, or whatever, it would be equivalent to pricing them in constant dollars. Think of constant dollars as the equivalent of barter for equivalent goods.

There's the advantage of using constant dollars. If the graph was horizontal and flat, it would mean that the actual dollar amounts paid out exactly kept pace with inflation. Since the curve goes down after 1980, it means that the welfare payments went *down* after 1980 -- they didn't keep pace with inflation.

Okay without looking at any other charts, did the actual dollar amounts stay the same or go up between 1985 and 1990? I know they did not keep up with inflation, but did the dollar amounts go up or stayed the same. And for extra credit, if the dollar amounts went up, how much did they go up? ie did the legislators vote more money? For more bonus points if I earned $80,000 a year in 1990, what percentage of my salary would a person on welfare have received?

Dan

But kerosene is not. Not that the temperature is the issue - but specific impulse IS.

Kerosene is 289 density impulse 294 Liquid H2 is 381 density impulse 124

Men have always gone to the high places to pray...

And what a lot of people think about the manned spare program. NASA would have you believe that the space program created the computer. In fact the launch computer for the Saturn Ib and Saturn V was a computer that RCA made to control oil drilling rigs.

Dan

You haven't lived until you've run through a little Aerozine.

They went up.

Actually, between 1985 and 1990, they *did* keep up with inflation. They went from $201 inflation-adjusted dollars in 1985 to $203 in 1990. But they actually were going down by 1990, from $210 in 1987. They've dropped pretty consistently since then, to $154 in 2006. I'm not going to look up more recent figures. I'll leave that for you.

The current-dollar amounts were $112 in 1985 and $135 in 1990.

See above.

'Don't know. I'll let you handle that part of the school project.

BEFORE I answered the first post, I ran down the source of the data; loaded it into Excel to check the Wikipedia graph (they got it right -- they don't always do so); and also loaded the current-dollar data and made a graph of that, just for kicks.

Here is the data (Table TANF 6):

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If you want the Excel table and comparative graphs I made, just tell me if that's your real e-mail address at the top. It's Sheet 2. Sheet 1 is "Total AFDC/TANF Expenditures on Cash Benefits and Administration: 1970 - 2006" (Table TANF 4 from the source document).

Do you find this entertaining? If so, there's a little pill you can take...

You can calculate that by looking in the source document above at the total number of people covered in 1990, and plug in the annual payment from the monthly given above.

It's all in your hands.

Dunno that one, John. I'm not really a steely-eyed rocket guy.

But I do love the smell of JP4 in the morning...

That is not my real e-mail address. It was my real email address, but time marches on.

Dan

Tom, it's not hard to make (almost) the exact propellant used in the space shuttle. I do it in my lab; I'm sure a lot of guys do it in their garages. Ammonium perchlorate composite propellant (APCP) is less hazardous than blackpowder, smokeless, and/or most fireworks. It generally takes a flame to light APCP---a spark won't do it---and once it's lit it burns about like a road flare.

It's about 16% powdered aluminum, 69+% ammonium perchlorate, a fraction of a percent of red iron oxide, 2% epoxy curing agent (DER331 works), and 12% PBAN (polybutadiene acrylic acid acrylonitrile). Chemicals can be obtained from Firefox.

It took ten years and about three-quarters of a million dollars in legal costs but APCP was removed by court order from BATFE's "orange book" (list of exp**sives) a couple years ago.

Lloyd, if you're talking about John R, he died a little over a year ago.

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The stuff in the space shuttle uses PBAN and an epoxy curing agent rather than HTPB and isocyanate. Since it's a man-rated vehicle they never changed the older technology.

-- Best -- Terry

FWIW, I've given up on trying to talk sense to JRC; he's another victim of Liberal Brain Lock.

Cheers! Rich

Who was it who first said, "Alcohol, Tobacco, Firearms, and Explosives should be aisles in the local store, not a government bureaucracy."

Apologies for the paraphrase. :-)

Thanks, Rich

Oh, Rich, don't be ridiculous. You're so consistently full of crap that, lately, you're vying with Gunner for the title of RCM Bullshit Artist. You constantly make claims that are off the top of your head and you never check to see if you're right before spouting some right-wing baloney.

You wouldn't know "sense" if it came up and bit you in the butt.

Terry fired this volley in news: snipped-for-privacy@4ax.com:

Oops! I didn't know. I'm not a "rocketry guy", I'm in the fireworks business. We didn't get the news. I did know he was in bad health, but the last time I talked with him was when I bought a drum of AP from him about three years ago.

That's a real loss. John Rahkonen was a gem, and never failed to give a guy whatever he knew to get him to the next stage (so to speak).

FWIW, and maybe his memory was failing, he told me (and gave me the approximate formula) for what he claimed was the original SRB package. He told me it had been changed, and cited CTPB... But he was a long way past that project, and maybe he forgot... he was in his late 70's, I think, when I got aquainted with him.

I'm really sorry to hear he passed. He was a really nice fellow who helped anyone who called.

LLoyd

"I really can't help myself. Its just bad wiring in the brain. " - Gunner (modified)

Joseph G would call that Ad Hominem.

Dan

And Joseph G would be wrong.

So what is it that Rich was doing? Dish it out, get it back.

And who is "Joseph G"?

True, unless you think my last sentence depends upon the previous paragraphs. It did, sort of, which probably just qualifies it. The rest of it, though, is not ad hominem at all. It's just documentable facts. "As hominem" is just the righties' latest buzzword, used by people like Gunner, who dismiss all contrary arguments because they come from "lefties," making him a Grade A hypocrite.

That's not ad hominem, by the way. It's definitional and not an argument at all.

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