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originally posted by: charlyv
a reply to: eriktheawful
The physical evidence proves that Apollo astronauts survived the VA belts. The backup from the correct mathematical analysis shows that we really understand the situation, and as it should, enforces reality.
The principal source of radiation for low-earth-orbit, low-inclination space flights is in the area of the South Atlantic magnetic anomaly. None of the Gemini dose measure ments reported in this paper are of high enough intensity to be considered hazardous. There is a trend toward larger doses as missions are flown higher and longer. Extended orbital operations between 1400 and 4400 kilometers would encounter high interior radiation levels. Pronounced spacecraft geometry effects have been measured in manned spacecraft. Radiation dose is already a criterion used in mission planning. Instrumentation for radiation measurements on Gemini spacecraft is described.
Space- radiation-dose measurements during Project Mercury clearly established the region of the South Atlantic magnetic anomaly as the principal source of ionizing radiation in low-altitude nonpolar orbits. This fact was shown by comparing the proton flux in the nuclear emulsions from the three-orbit Mercury-Atlas (MA) 7 mission
(which did not traverse the South Atlantic magnetic anomaly) with the higher proton flux recorded on the six-orbit MA-8 mission.
Like the Mercury missions, all manned Gemini missions were instrumented to record the radiation dose. Since the radiation dose encountered in low-altitude (100 to 200 nautical miles) earth orbit was not sufficient to warrant real-time measurement
for radiological-safety purposes, a passive-dosimeter system was devised for the Gemini Program.
Extended orbital operations between 1400 and 4400 kilometers
originally posted by: onebigmonkey
a reply to: FoosM
If you believe any Apollo mission spent significant and life threatening time in the heart of the VAB then show us your maths or any kind of supporting evidence. I am stating, as a fact, that they did not. Do your worst - you will produce nothing of any relevance.
originally posted by: eriktheawful
a reply to: FoosM
You were shown several times the path that Apollo took....and you refused to acknowledge it, but instead deflected.
originally posted by: onebigmonkey
a reply to: FoosM
You really have no understanding of anything you read.
Radiation was considered as part of mission planning. Part of Apollo's support mission was to monitor solar flare events to make sure there wouldn't be any problems.
They planned the trajectories to spend the minimum time in the belts. You keep trying to make sly insinuations about their trajectory but aren't prepared to provide your own proof, instead you demand that other people do your work so you can com up with a big "A-HA" moment.
originally posted by: FoosM
So why didn't they document the X class solar flares that occurred during Apollo 12?
Public Affairs Office - "This is Apollo Control at 97 hours, 3 minutes. We are now some 4 minutes from LOS from Apollo 12. The spacecraft currently on the 7th revolution around the Moon. The crew is some 4 hours into a 8 and a half hour sleep period. Here in Mission Control now we have received word from the Solar Particles Alert Network that they have observed a moderate solar flare; this apparently is the same solar flare that we watched on the second of November. The flare has now rotated around and is coming back into the field of view. Based on the previous information that we had from this flare, we would not expect it to be a problem; the particles associated with it were quite low and from our previous information we would not expect to get a significant level of radiation to the crew. We will however be monitoring the particles coming from the flare now over the next few hours, determining the types of radiation levels we can expect for both inside the spacecraft and outside the spacecraft and evaluating this in terms of any possible impact on the mission. To repeat the classification that we have of the flare at this time, based on optical data, is that it is a moderate flare and we would not expect it to be a problem.
Public Affairs Office - "This is Apollo Control at 235 hours, 31 minutes. We have just had a report from the radiation support room that our solar particle alert network has detected a very small solar flare. The - We haven't gotten a description of the size of the flare except that it was quite small and at this time we have gotten no readings from instrumentation on the spacecraft to indicate the presence of any additional level radiation as a result of this flare.
I don't have to provide proof, its a matter of record.
I should ask the question, why have you not updated your own information on the matter
instead of talking about something you are clearly not so educated about?
originally posted by: FoosM
originally posted by: eriktheawful
a reply to: FoosM
You were shown several times the path that Apollo took....and you refused to acknowledge it, but instead deflected.
One path. How many missions where there?
Now, I will ask again, have there been any Apollo missions that NASA admitted to having gone through
the harshest part of the VABs?
originally posted by: FoosM
originally posted by: eriktheawful
a reply to: FoosM
You were shown several times the path that Apollo took....and you refused to acknowledge it, but instead deflected.
One path. How many missions where there?
Now, I will ask again, have there been any Apollo missions that NASA admitted to having gone through
the harshest part of the VABs?
originally posted by: onebigmonkey
originally posted by: FoosM
So why didn't they document the X class solar flares that occurred during Apollo 12?
www.hq.nasa.gov...
Public Affairs Office - "This is Apollo Control at 97 hours, 3 minutes. We are now some 4 minutes from LOS from Apollo 12. The spacecraft currently on the 7th revolution around the Moon. The crew is some 4 hours into a 8 and a half hour sleep period. Here in Mission Control now we have received word from the Solar Particles Alert Network that they have observed a moderate solar flare; this apparently is the same solar flare that we watched on the second of November. The flare has now rotated around and is coming back into the field of view. Based on the previous information that we had from this flare, we would not expect it to be a problem; the particles associated with it were quite low and from our previous information we would not expect to get a significant level of radiation to the crew. We will however be monitoring the particles coming from the flare now over the next few hours, determining the types of radiation levels we can expect for both inside the spacecraft and outside the spacecraft and evaluating this in terms of any possible impact on the mission. To repeat the classification that we have of the flare at this time, based on optical data, is that it is a moderate flare and we would not expect it to be a problem.
Public Affairs Office - "This is Apollo Control at 235 hours, 31 minutes. We have just had a report from the radiation support room that our solar particle alert network has detected a very small solar flare. The - We haven't gotten a description of the size of the flare except that it was quite small and at this time we have gotten no readings from instrumentation on the spacecraft to indicate the presence of any additional level radiation as a result of this flare.
Moderate. Not X Class. Publicly announced during the mission to waiting journalists.
Also reported in this:
www.hq.nasa.gov...
So yeah, really secret.
originally posted by: Rob48
originally posted by: FoosM
originally posted by: eriktheawful
a reply to: FoosM
You were shown several times the path that Apollo took....and you refused to acknowledge it, but instead deflected.
One path. How many missions where there?
Now, I will ask again, have there been any Apollo missions that NASA admitted to having gone through
the harshest part of the VABs?
The trajectories of ALL the Apollo missions are detailed on the link in Bob B's trajectory analysis. So you can do the exact same maths he did.
originally posted by: FoosM
originally posted by: Rob48
originally posted by: FoosM
originally posted by: eriktheawful
a reply to: FoosM
You were shown several times the path that Apollo took....and you refused to acknowledge it, but instead deflected.
One path. How many missions where there?
Now, I will ask again, have there been any Apollo missions that NASA admitted to having gone through
the harshest part of the VABs?
The trajectories of ALL the Apollo missions are detailed on the link in Bob B's trajectory analysis. So you can do the exact same maths he did.
So Bob has the trajectory of an Apollo mission that goes through the heart of the Van Allen Belt?
I didn't see that, which one is it then?
originally posted by: Rob48
You tell us, Foo. Do some maths instead of getting everyone else to do the donkey work.
Or are you afraid that you will accidentally work out that Apollo was possible, like your Aussie pin-up did?
By the way, the Apollo 12 flares were explained to you four years ago. Have you forgotten which arguments you've already used?
Clavius answered 6 years ago
Solar flares occur in a wide variety of strengths. That is, the sun belches out a little bit in the way of flares every day -- sometimes up to a dozen. These are little solar tantrums that barely register on our sensors and cause no detectable biological effect for astronauts.
Then at the other end of the scale you have the wholesale solar blasts -- what we call "X-class events" that send a shotgun blast of particles in one direction out into the solar system. Those would be very dangerous for astronauts, but occur only very rarely.
How rarely? Well, during the Apollo operational period 1969 to 1972, there were only three solar events that had a biological significance. That is, events that would have registered on the astronauts' dosimeters. The event in August 1972 was a whopper. It occurred between Apollo 16 and Apollo 17. Had a mission been flown during that time, and had the flare been aimed at Earth, it is likely the astronauts would have become severely sick. The other two, however, would not have resulted in illness, but may likely have caused the astronauts to have radiation-influenced health problems later in life.