reply to post by SaturnFX
I am truly sorry that you fell for this old chestnut!!!
Came along a bit late, I did....hope it's been adequately explained....the "underwater" explanation was a really good one! (Wish I'd thought of
that, it helps people visualize better, if they have at least SOME experience in a pool environment).
I am quite familiar with most of the ridiculous "claims" by those pesky "hoax" peddlers...and this one, that clip, is no exception. That
blow-dried buffoon, pontificating in the inter-cuts?? Complete idiot.
Someone mentioned already, is sure worth a repeat....the 1/6th gravity is THE most important bit that people seem to forget. The human musculature,
and strength, is still the same, Earth-adapted for his normal 180-pounds of body weight in one G....and, of course, the EVA suit, and PLSS add more
mass, but still....essentially, he is still only about "70-80 pounds equivalent", when used to easily whipping around his naked 180 pounds.
It is also important to understand the suits...when under pressure. They have a sort of "springiness", like a balloon animal, in a way. There is a
default position, based on how they are sewn. The human inside has to exert muscle power to bend, at any articulated joints.
(Many accounts I've read say that among the most exerting aspects, are the gloves, and moving the hands, clenching the fingers. Most Astronauts,
even today, find they have to trim their fingernails VERY short, and yet still, they can get abrasions on the fingertips, and cuticles, from rubbing
the material inside the gloves).
Same with the elbows, shoulders, knees, ankles, etc. You move against
the basic shape of the suit, where it wants to be. When you
relax, it springs back. I think some more modern design have more articulated joints, like in the wrists, where you can rotate your hands around the
ulna/radius in the arm, but will have to look that up.
So, basically, when the astronaut (was that Cernan, or Schmitt? I think Schmitt fell the most. He's still alive, and has a website....WHY NOT ASK
...anyway, once down on his hands and knees, a simple push with the forearms, and a bit of flex in the ankles and toes ....you can see it, in the
maneuver (and without the friction/resistance of being underwater, for that example). PLUS, the PLSS is a big counterweight, on his back....shifts
his center of gravity farther back than it is in a naked body....