QUOTE (turbonium @ Mar 9 2008, 07:13 AM)

Or maybe you aren't fleshing out your arguments properly / concisely in your posts, leaving them open to various interpretations. But let's continue...
Yes, Turb, I do have this propensity to not flesh things out very completely...
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No, you're still missing my point - there is no evidence of dust being removed (disturbed by the DPS exhaust) all around the LM in the astronauts' photos.
There's plenty of photographic evidence of soil erosion at the base of the LM. The photos have been variously posted here.
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The area directly below the LM should have much less dust (if any at all) compared to the adjacent undisturbed areas. But in the photos, it doesn't. And there should also be much less dust all around the LM than there is in the adjacent, undisturbed areas. But in the photos, it doesn't.
This is another one of those, "should've been..." comments that defies qualification. How much should've been? How far out from the base of the LM? Why?
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The surface dust is just as thick all around the LM, and (most likely is), directly below the LM....as the dust we see everywhere else on the surface!
No, it is not, and this has been clearly illustrated. In many cases, hard substrate is clearly visible beneath the LM...it's not outside of the radius of impingement. This is an old, tired issue.
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Consider the photos that show deep footprints left in the dust, right beside the LM. Compare them to photos of footprints anywhere else, away from the LM. They are no deeper than the footprints beside the LM. The same thing is true for the Rover tracks. The tracks near the LM are as deep as the tracks left anywhere else.
Do you understand what I'm getting at here, MID?
Yes.
However, you need to qualify how much dust should've been removed , and how much actually was, around the LM. You can't do that. It's merely logical that as the LM descended, the radius of impingement decreased. When the LM was at touchdown point, that radius was at its smallest, and only would've impinged on the dust beneath the LM., which it evidently did. What is so difficult to understand about this?
Further, it's been pointed out before, but impingement took place at varying degrees depending upon soil depth and actual level of thrust. Further, lunar soil is highly cohesive due to it's ragged crystaline character. The LM DPS sheared off varying amounts of this resistant dust on it's way down. Sometimes, the area beneath the LM was bare, sometimes, there was some dust left. How much should've been blown away?
You keep saying "should've", but you never qualify that...
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You say a huge amount of dust scatters far distances away from the LM, spreading a thin layer of dust over a very large surface area. This layer of dust is so thinly spread out that photos don't show any visible evidence of it.
Where did all this dust come from? Well, we know that the greatest amount of dust being disturbed (blown out far distances) was directly below, and all around, the LM landing point.
What's that again?!?
- the greatest amount of dust being disturbed was directly below and all around the LM.
That is, the greatest amount of dust being blown far away.....was from the area with thick dust and deep footprints!
Total nonsense.
Again, qualify your conclusion...
How thick was the dust all around the LM...at every site?
How thick was it at the footpads, and how thick was it 10 feet outboard?
How thick was it directly underneath...at each site?
What's nonsense is making declarations without having anything to substantiate them. This issue has been completely discussed in the past.
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The areas where dust was blown to may be subtle. But the areas where dust was blown away from would be very obvious, and would be totally visible in photos taken at either close range or far away.
Only beneath the LM, where it is obvious in most cases...especially where all of it was blown away (pictures have already been posted of this).
How obvious should the sheared off dust at say, 100 feet aft of the LM be?
If you can't answer that, then your argument has no basis.
The area where the dust was blown to would be invisible.
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The DPS plume would have removed all (or much) of the dust where it contacted the surface directly, and the dust within the vicinity of direct contact. But the photos show no evidence of ANY dust being removed in the areas of greatest DPS plume contact (directly below/around the LM)
Depends on how close to the surface and the duration the surface was exposed to the blast, and how deep it originally was. And, the photos do show clear evidence of dust being disturbed beneath the LM, as previously indicated.
Again, why would it have removed much or all of the dust, and where along the path would it have done that?
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It should now be obvious how all of this relates to a hoax.
The photos show no evidence for all (or any) absence of dust, below and all around the LM, that the DPS plume had (supposedly) blown far away. The video shows it, and the astronauts describe it.
But the photos don't. And if the photos were faked (which they were), then the moon landings were faked.
Well, that clarifies it.
However, you're absolutely wrong, as you will clearly note from all of the photos provided to date.
Thus, the hoax argument pertaining to these conclusions of yours is null and void. In fact, it was rendered that way long ago....this is a re-hash of old material.
This entire argument is nil unless you can show:
What the thrust of the LM DPS was at any given point during the terminal approach, where dust blowing occurred.
What the spread of the exhaust plume was at all points of altitude during that phase.
What the exhaust gas velocity was at nozzle base exit...similarly detailed.
What the velocity reduction and pressure reduction would've been for that exhaust gas based on altitude and spread of the plume at any given point.
The pressure of said gas on the surface, again, at all points in the terminal phase.
A quantitative description of the cohesiveness of the lunar soil, and a discussion of how said pressures would effect that soil...thus describing the depth of the soil all along that terminal phase, and just how much shear should've taken place at any given point.And none of us know all that information, including you. Most of us could care less about such details. They're not necessary.
Thus, the argument based on "should've beens" is the only nonsense here. The evidence obviously shows dust shear along the path of impingement. The photos show dust disruption beneath the LM...how much is irrelevant. And no one can say how much should've been...only that it obviously was. The astronauts described it, the films show it happening, and the photos confirm it.
This argument of yours can't go any futher given the aformentioned facts.