Posted on 10/09/2013 2:30:36 PM PDT by lbryce
YouTube:Launch of World's Largest Rocket
Space Launch Report:Delta IV Data Sheet
It seems to get off out of the gate quicker and with seemingly less effort than the vaunted Saturn V, its launch seems smoother and more polished than that of the Saturn V.
For a bit of fun, find the opening sequence for the old Buck Rogers TV show. They had a shuttle launch sequence, but before any shuttles had been launched. So they animated it as a slow launch like the Saturn V. But when the thing finally flew, it leaped from the pad.
Concur..esthetically, the Saturn is gorgeous, compared to the Delta Heavy...the latter seems reminiscent of the old Soviet approach..take a reliable booster, and just bundle about 5 of them together..
I saw the Apollo 17 launch at night at Coco Beach. The sound of the snapping exhaust sounded like a Mack truck which could be heard all the way up to separation. The crowd was in a celebration mood. That pride in America is something you do not experience anymore.
And that is a shame that we can’t feel that pride today. Nobody is supposed to be exceptional but the proletariat seem to just love exceptional athletes. Go figure.
The celebration mood was collective relief. Even if the buildup was propaganda it was good for us. It brought us together. We had common enemies, common goals and common purpose. Leaders figure out how to orchestrate that.
We may recover but you and I will probably not live to see it.
I doubt if they would make a kerosene-based rocket again. Werner went with this because it was known technology and certain to work, but others thought it was a bit too conservative.
While there never was a launch failure in Saturn V history there was a very serious design flaw that caused huge oscillations within the rocket known as the pogo effect that NASA, von Braun had to contend with that plagued the Saturn V, finally resolved.
A company we might have heard of? (Good story)
Where the heck did he get the resonant frequency data?
Forward to 6:16 for landing approach
“...he discovered that the board had the same resonant frequency as a semi truck on the road...
Where the heck did he get the resonant frequency data?”
The way I remember it, there are well-known frequencies or at least a range of frequencies and amplitudes that 40-foot trailers in a tractor-trailer combo produce at normal highway speeds. This data is PROBABLY in a book on packaging engineering. I know that there are actually test chambers that very large companies or consulting firms have or once had that could duplicate these conditions. Stuff like this MAY have been rendered obsolete to a degree by computer modeling and simulation.
His animated simulation actually showed the circuit board flapping back and forth - even a casual observer could see that a circuit board couldn’t bend that way for long, if at all. It was pretty amazing stuff in 1987.
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