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Originally posted by choos
yes i know what the experts are stating in these reports heres an example:
www.cs.odu.edu...
thin piece of aluminium 22 cGy/year and 20cGy/year. PER YEAR i think you can work out how much exposure for 12 days right?
this is for a solar minimum for when GCR's are meant to be their strongest. what about during a solar maximum such as when the apollo missions were? got that too:
i think your reports have spoken enough right??
do you understand it yet? when i say its insufficient for long term missions but sufficient for 12 days?
Originally posted by choos
look at the numbers, your own report supports my claim with the numbers.. come to think of it, have you even read the entire report??
Conclusion: For lunar sortie missions, the duration is short enough that GCR creates no serious
risks. For lunar outpost missions the probability of encountering an SPE during Solar Maximum in a
6-month rotation is 1% to 10% depending on the assumed energy of the SPE. Even with > 30 g/cm2
of regolith shielding the 95% CI dose from a major SPE would exceed the 30-day limit. The GCR
during Solar Minimum for a 6-month stay on the Moon is marginal against the annual limit, but this
can be mitigated somewhat by use of regolith for shielding the habitat.
A lunar sortie (or lunar sortie mission) is a human spaceflight mission to the Moon. In contrast with lunar outpost missions, lunar sorties will be of relatively brief duration.
Originally posted by dragonridr
reply to post by spartacus699
So i guess Russian scientists were just to stupid to realize we faked the moon landing? They would have just been intimidated at the power of the United States? Come on you know the Russian scientists were right on the heals of the Americans trying to put a man on the moon. Were you aware the Russians are going back they are building a huge facility whos sole purpose is to put a man on the moon by 2020 Putin thinks russia needs to take the lead in space. I dont think they would spend billions if the cosmonauts cant get there would make them look foolish and russians dont like to look foolish.
Originally posted by turbonium1
Not again, spouting the Russia (USSR) nonsense!!
The Soviets and US were in a 'Cold War' at the time of Apollo, right? Which means they were bitter enemies, yes? Any hoax by the US would be 1. Immediately recognized as a hoax by the Soviets, and 2. Immediately trumpeted to the world as a hoax by those same Soviets.
What did the USSR say about the JFK assassination?
Nothing.
Originally posted by SayonaraJupiter
Originally posted by turbonium1
Not again, spouting the Russia (USSR) nonsense!!
The Soviets and US were in a 'Cold War' at the time of Apollo, right? Which means they were bitter enemies, yes? Any hoax by the US would be 1. Immediately recognized as a hoax by the Soviets, and 2. Immediately trumpeted to the world as a hoax by those same Soviets.
What did the USSR say about the JFK assassination?
Nothing.
Turbo: It's the last dying breath of the Apollo Defender..... I like to call it the "Soviet Strawman".
If you pushed them for a source link on it I think they only have one quote from one former Soviet cosmonaut.
Additionally, it represents a fatal flaw in the logic of Apollo Defenders because they will utilize the Soviet Strawman while criticizing yours (or my) ability to research. It's pathetic.edit on 6/14/2013 by SayonaraJupiter because: additionally
Originally posted by turbonium1
And they'll never stop spewing it forth, ad nauseum.
It boggles the mind. .
Originally posted by Zaphod58
reply to post by turbonium1
From more experts.
Conclusion: For lunar sortie missions, the duration is short enough that GCR creates no serious
risks. For lunar outpost missions the probability of encountering an SPE during Solar Maximum in a
6-month rotation is 1% to 10% depending on the assumed energy of the SPE. Even with > 30 g/cm2
of regolith shielding the 95% CI dose from a major SPE would exceed the 30-day limit. The GCR
during Solar Minimum for a 6-month stay on the Moon is marginal against the annual limit, but this
can be mitigated somewhat by use of regolith for shielding the habitat.
www.marsjournal.org...
Lunar Sortie Mission:
A lunar sortie (or lunar sortie mission) is a human spaceflight mission to the Moon. In contrast with lunar outpost missions, lunar sorties will be of relatively brief duration.
lunarsortie.com...
So the experts are saying that a lunar sortie (Apollo) is short enough term that aluminum shielding isn't going to be a significant risk as far as GCRs go.
Originally posted by turbonium1
You don't understand what environment they're referring to....
"No exposure limitation has been recommended for deep space missions as yet, but in the interim the recommendation is that estimates of interplanetary exposure using quality factors dependent on the linear energy transfer (LET) with exposure limits recommended for operations in low Earth orbit (LEO) be taken as a guide to deep space mission shield requirements. These LEO exposure limits were established under the assumption that the GCR components are diminished in LEO by their deflection in the Earth’s magnetic field so that LEO exposures are dominated by trapped protons and electrons. Deep space exposure estimates using LET-dependent quality factors result in exposures of as much as 1 Sv/yr near solar minimum depending on shielding."
Let's read on...
"Radiation protection systems (shielding, monitoring, and medical supplies) impact mission cost, and uncertainty in past shielding databases is inadequate for present design studies. For example, the required shielding to reduce the
5-cm-depth dose from GCR at solar minimum to 45 cSv behind an aluminum shield was estimated to be 2 g/cm2
by the NCRP in 1989 (ref. 4), to be 7 g/cm2 by Simonsen, Nealy, and Townsend in 1992 (ref. 6), and to be 55 ± 10 g/cm2 by the present estimate (table 2) using current transport codes and databases. Whereas aluminum was considered a useful shield material a few years ago, now it is considered as not only a poor shield material but may even be hazardous to the astronaut’s health because dose equivalent may be a poor predictor of astronaut risk (ref. 7)."
So from table 2, which you think supports your case, they state...
"...55 ± 10 g/cm2 by the present estimate"
OK, what about Apollo's shielding, then?....
"The hull of an Apollo command module rated 7 to 8 g/cm2. A modern space shuttle has 10 to 11 g/cm2. The hull of the ISS, in its most heavily shielded areas, has 15 g/cm2."
www.nasa.gov...
How do you like the numbers now? Not so much, I'm sure.
It's obvious that you haven't read it, or perhaps you did, and simply failed to understand what it means..
Estmates (for aluminum shielding) were 2 g/cm2 in 1989 (ref. 4), Then in 1992, it rose to 7 g/cm2. By 1997, when this report came out, it had spiked up to 55 ± 10 g/cm2.
But that's not where it ends. What else did they say? Let me remind you...
"Whereas aluminum was considered a useful shield material a few years ago, now it is considered as not only a poor shield material but may even be hazardous to the astronaut’s health because dose equivalent may be a poor predictor of astronaut risk "
By 1997, they already understood that aluminum was not only an inadequate material for shielding BEYOND LEO, it would probably be hazardous to humans.
This assertion was later confirmed to be accurate, as we know.
Now do you get the point?
Originally posted by SayonaraJupiter
Originally posted by turbonium1
And they'll never stop spewing it forth, ad nauseum.
It boggles the mind. .
This thread is a total victory for disclosure which is a victory FOR ALL MANKIND.
Originally posted by SayonaraJupiter
Originally posted by turbonium1
Not again, spouting the Russia (USSR) nonsense!!
The Soviets and US were in a 'Cold War' at the time of Apollo, right? Which means they were bitter enemies, yes? Any hoax by the US would be 1. Immediately recognized as a hoax by the Soviets, and 2. Immediately trumpeted to the world as a hoax by those same Soviets.
What did the USSR say about the JFK assassination?
Nothing.
Turbo: It's the last dying breath of the Apollo Defender..... I like to call it the "Soviet Strawman".
If you pushed them for a source link on it I think they only have one quote from one former Soviet cosmonaut.
Additionally, it represents a fatal flaw in the logic of Apollo Defenders because they will utilize the Soviet Strawman while criticizing yours (or my) ability to research. It's pathetic.edit on 6/14/2013 by SayonaraJupiter because: additionally
Originally posted by choos
Deep space exposure estimates using LET-dependent quality factors result in exposures of as much as 1 Sv/yr near solar minimum depending on shielding."
Originally posted by choos
i think you can calculate how much that is for 12 days right?
Originally posted by Zaphod58
reply to post by turbonium1
So an independent contractor can't be an expert huh? Or is it only the people that agree with you that can be experts.
Originally posted by Zaphod58
According to experiments done by Stanford University, the annual dose of radiation an astronaut would be exposed to (you do understand annual means yearly right?), is between 6.2 and 6.5 cGy for skin (27.4-21.8 cSv annual dose equivalent) behind 1, 5, and 10 g/cm2 of aluminum at solar minimum, 5.7-5.8 cGy for bone marrow (16.7-14.6 cSv), and a total dose equivalent of 17.9-15.4 cSv. For a solar maximum it would be 18..4-18.0 cGy (79.8-56.2 cSv), 16.4-16.1 cGy (44.5-37.0 cSv), with a total dose equivalent of between 48.8 and 39.3 cSv.
In a 30 day period maximum exposure is .25 Gy for bone marrow, 1.0 Gy for the eye, and 1.5 Gy for skin. That means that in 30 days they could safely be exposed to 25 cGy, 100 cGy, and 150 cGy in thirty days. The numbers calculated by Stanford are for a year in space. Apollo astronauts would easily be able to stay in space for the duration of their mission, and have minimal risk for their health long term.
Originally posted by IvanAstikov
Something that's always bugged me about the first moon landing is the eagerness to show it to the whole world, when a Challenger moment would have set back the entire project. It's almost as if they were absolutely certain that they would have a successful mission on the first go. What was NASA's go to plan had the mission gone pear-shaped right before the eyes of the whole world?
Originally posted by Anonbeleiver77
Not one scientist, astronomer, engineer or mathematician who where involved has ever come forward or even hinted at a hoax.
Not for money, fame, principles, guilty conscience, anger or after just drinking too much.
Not on their death bed.
Originally posted by turbonium1
"Deep space exposure estimates using LET-dependent quality factors result in exposures of as much as 1 Sv/YEAR"
"....near solar minimum depending on shielding."
Why did you snip out the part about shielding? Any reason?
He "estimates" for "near solar minimum" as "depending on shielding". .
Let's cut to the chase, these are simply made-up numbers for non-existent shielding. One of countless possibe scenarios. If you disagree, show where it's at all valid. I'd love to see it.
You want me to calculate - based on the made-up numbers, which depends on the non-existent shield, and plop it into your non-existent argument?
You refuse to see the elephant in the living room. His name is Apollo. He is right there, but you won't acknowledge him. You don't ask yourself why he's ignored by those who should love and embrace him. Those people are experts on elephants. They want to understand everything about them. So why would they dismiss the one they already have, to look for others somewhere far away?
Because that is not a real elephant in their living room, it is just a fake. Very realistic, good enough to fool many people at a glance, But it's not real.
In the case of Apollo, the same scenario unfolds time and time again. Especially within current (or fairly recent) reports..
Deep space is not well-understood, or even close to it. They don't have any solid information or facts on this environment. They always need to qualify their statements. See above.
They often begin with LEO, using it as a reference point for the environment beyond LEO (ie: deep space). Estimates are made on that basis, and by unmanned craft.(ie:the two probes in the VAB)
But Apollo supposedly went into deep space - nine times! They'd have loads of information and data, right?
This would be much more useful than crude estimates. They'd already have adequate shielding for the initial missions they planned (by 2020 or so).
They don't use Apollo for anything at all, though. Apollo data is never cited, it is either completely ignored, or it's deposed as so much garbage, like they did in your report.
It's time to connect the dots, isn't it?
Deep space exposure estimates using LET-dependent quality factors result in exposures of as much as 1 Sv/yr near solar minimum depending on shielding
Originally posted by SayonaraJupiter
Originally posted by turbonium1
Not again, spouting the Russia (USSR) nonsense!!
The Soviets and US were in a 'Cold War' at the time of Apollo, right? Which means they were bitter enemies, yes? Any hoax by the US would be 1. Immediately recognized as a hoax by the Soviets, and 2. Immediately trumpeted to the world as a hoax by those same Soviets.
What did the USSR say about the JFK assassination?
Nothing.
Turbo: It's the last dying breath of the Apollo Defender..... I like to call it the "Soviet Strawman".
If you pushed them for a source link on it I think they only have one quote from one former Soviet cosmonaut.
Additionally, it represents a fatal flaw in the logic of Apollo Defenders because they will utilize the Soviet Strawman while criticizing yours (or my) ability to research. It's pathetic.edit on 6/14/2013 by SayonaraJupiter because: additionally
Chabot Observatory calendar records an application of optical tracking during the final phases of Apollo 13, on April 17, 1970: The Chabot Observatory calendar records an application of optical tracking during the final phases of Apollo 13, on 17 April 1970. "Rachel, Chabot Observatory's 20-inch refracting telescope, helps bring Apollo 13 and its crew home. One last burn of the lunar lander engines was needed before the crippled spacecraft's re-entry into the Earth's atmosphere. In order to compute that last burn, NASA needed a precise position of the spacecraft, obtainable only by telescopic observation. All the observatories that could have done this were clouded over, except Oakland's Chabot Observatory, where members of the Eastbay Astronomical Society had been tracking the Moon flights. EAS members received an urgent call from NASA Ames Research Station, which had ties with Chabot's educational program since the 60's, and they put the Observatory's historic 20-inch refractor to work. They were able to send the needed data to Ames, and the Apollo crew was able to make the needed correction and to return safely to Earth on this date in 1970."