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Originally posted by PsykoOps
Good to have pro's on board. We better keep the discussion in the stuff that was available in the 60's thought.
Originally posted by ppk55
Hi and welcome pezza.
Maybe you can help with this query from Jarrah's video
'Moonfaker: Radioactive Anomaly part 16'. I would however suggest watching them all as there are some very good questions.
I'm most interested in Eleanor Blakely's comments that particles fragment when they hit aluminium shielding, resulting in more particles inside than outside.
I'm quite interested in how they survived the radiation in space.
Originally posted by ppk55
I would however suggest watching them all as there are some very good questions.
Originally posted by CHRLZ
Originally posted by ppk55
I would however suggest watching them all as there are some very good questions.
Nice marketing, ppk55, from Sydney, Australia - right where Jarrah lives...
Originally posted by pezza
Originally posted by ppk55
Hi and welcome pezza.
Maybe you can help with this query from Jarrah's video
'Moonfaker: Radioactive Anomaly part 16'. I would however suggest watching them all as there are some very good questions.
I'm most interested in Eleanor Blakely's comments that particles fragment when they hit aluminium shielding, resulting in more particles inside than outside.
I'm quite interested in how they survived the radiation in space.
Sure, happy to provide some insight here. Because i am on an iphone i cant view the vid just yet. Can you post a summary of those questions here? I need some context on what these particles are, size, composition etc.
Originally posted by ppk55
I'm quite interested in how they survived the radiation in space.
Originally posted by Tomblvd
The video is about radiation, not regolith particles.
I'll summarize, the video (purposely?):
-confuses short-term radiation exposure (such as Apollo) with long term exposure (such as a trip to Mars).
-confuses particle and wave radiation.
-confuses ionizing with non-ionizing radiation.
-confuses normal background cosmic radiation with (very rare) high-energy solar flares.
-again, I'm sure others will add further lies found in the video.
The maker of the video constantly interchages accurate quotes from people regarding one issue and confounds it with something completely different. And given the general public's ignorance regarding radiation, the video is difficult to rebut easily.
Originally posted by CHRLZ
You're a stronger man than I, Tom, for watching more of that stuff.
Can you tell me (as ppk55 clearly is unable to), what the Eleanor Blakely bit was about - was she directly quoted, and was there a source? Don't re-watch it (I really should do that myself..*) I'm just thinking it might have been something.. er.. memorable.
I'd like to chase it up, as JW has a bit of a 'record' when he 'quotes'. I'd like to see if he remains consistent..
* - actually, no, it is up to ppk55 to quote the item, if he is wanting an actual debate, rather that just spamming this stuff. It's quite sad that these posters are unable to express themselves in their own words. What has the education system become?
Originally posted by debunkyFilm was expensive? Thank you very much for giving me the first laugh of today
The Luck of Apollo
* The timing of the Apollo Moon Missions compared to the occurance of solar proton events
The solar storm of August 1972 is legendary at NASA because it occurred in between two Apollo missions: the crew of Apollo 16 had returned to Earth in April and the crew of Apollo 17 was preparing for a moon landing in December.
Cucinotta estimates that a moonwalker caught in the August 1972 storm might have absorbed 400 rem. Deadly? "Not necessarily," he says. A quick trip back to Earth for medical care could have saved the hypothetical astronaut's life.
Originally posted by kyleplatinum
Just addressing the radiation part of this debate....
.
Was all Luck.
The Luck of Apollo
* The timing of the Apollo Moon Missions compared to the occurance of solar proton events
.
Showing ALL (REM) levels for apollo missions 7-17
The only danger was "Between" mission 16 and 17.
.
Originally posted by kyleplatinum
So... in my opinion,
since NASA WAS at fault for the deaths of three astronauts (ON EARTH, not even in space?)... and still took the chance of luck
with radiation on future missions Blows my mind!!!
..
..
The radiation shielding is measured in units of areal density - or grams per centimeter-squared.
Apollo command module rated 7 to 8 g/cm2.
A typical space suit, has only 0.25 g/cm2!
.
source..www.nasa.gov...
..
NASA had balls to send them up, and astronauts had balls for steppin out of the module!
Cucinotta estimates that a moonwalker caught in the August 1972 storm might have absorbed 400 rem. Deadly? "Not necessarily," he says. A quick trip back to Earth for medical care could have saved the hypothetical astronaut's life.
Surely, though, no astronaut is going to walk around on the moon when there's a giant sunspot threatening to explode. "They're going to stay inside their spaceship (or habitat)," according to Cucinotta. An Apollo command module with its aluminum hull would have attenuated the 1972 storm from 400 rem to less than 35 rem at the astronaut's blood-forming organs. That's the difference between needing a bone marrow transplant, or having a headache.
Values
Initial O2 Loading
The LM contained three oxygen tanks in the two stages. The descent stage contained one tank, which initially held 48.2 lbm of oxygen. The ascent stage contained two tanks, each containing 2.5 lbm of oxygen (Apollo 11 Mission Report, page 9-34, or page 162 in the PDF). This is a total of 53.2 lbm.
The History of Manned Spaceflight lists standard LM oxygen loading as 21.7 kg (47.8 lbm) in the descent stage, and 1.1 kg (2.4 lbm) in the ascent stage. Given rounding errors and that this was the standard values across all missions, these values are sufficiently close.
Consumption of O2
There were three main items that consumed the oxygen:
Astronaut respiration.
Cabin depressurizations (or more precisely, repressurizations after a depressurization).
Cabin leaks.
In his initial post, Dr. Greening uses a baseline of 0.05 lbm/hr for astronaut respiration. This agrees with estimates made on the ApolloHoax board. I will accept this for the purposes of these calculations.
For cabin depressurizations, there were two during the stay on the surface. The first was at the start of the EVA; the second was prior to lift-off to jettison unwanted materials. According to the ECS Quick Reference Data, each subsequent repressurization required 6.6 lbm of oxygen, for a total of 13.2 lbm (note, however, that this does not specify if it applied specifically to the Apollo 11 LM, or is a generic average across all LMs). Dr. Greening estimated 12 lbm, which is acceptably close.
For cabin leaks, there are actually two values. The nominal value – which is the design target – was 0.2 lbm/hr. Post mission, however, it was found that the Apollo 11 LM had an actual leak rate of 0.05 lbm/hr (Apollo 11 Mission Report, page 9-33; page 161 in the PDF). Dr. Greening uses the former rate, from page 102 of The NASA Mission Reports. Volume One: Apollo 11, (Robert Godwin, ed., Apogee Books, 1999). The value therein is apparently taken from the Apollo 11 Lunar Landing Press Kit, page 186 (or page 190 of the PDF). In the latter, it is clearly marked as the nominal value.
As such, the actual value must be used when comparing expected oxygen consumption to actual values.
Originally posted by ppk55
This is the part that I don't get. It seems in the space of 8 minutes they've depressurized the lander, dropped the PLSS's then 'repressed'. Doesn't that seem like an awfully short time frame to do this ?