posted on Feb, 10 2013 @ 03:17 PM
reply to post by kiwasabi
You are quite welcome kiwasabi. Thanks again for your info on the Foy thing. That is as telling as anything.
Yes, the ships were said to have inertial guidance systems. They were said to have had these platforms(devices which read assess orientation in
space) that were free to float in space with the ships floating about them. The LM had an additional so called "strapped on" platform which means a
device which reads orientation but which is actually attached to the frame of the LM. This additional platform did not float free in space.
There were a collection of accelerometers and gyroscopes that measured(knew) how the ship moved "right-left", "back-forth", "up-down" such as these
terms have meaning in space and how the ship spun. So theoretically, the ship needs no input from the outside. It can always orient itself, know how
it is pointing and where it was, is, and where it is going all based on internally derived data. This is the reason they use such systems in
missiles. They cannot be influenced from the outside and need no outside input.
The floating platform is what understands how the ship is pointed. Over time the platform "drifts" from its original orientation( in theory, because
the ship floats about it, it would return to earth in the same orientation as at blast off) . The only way to correct for the drift is to sight
stars. Then you are back where you started with a perfectly aligned platform, known orientation or attitude and these gyroscopes and accelerometers
that sense the ship's every move so know where and how it is.
In the case of Apollo 13 they claimed they knew the orientation of the LM platform based on that of the command module platform. At the time of the
explosion the LM is not turned on . Its platform's orientation is not determined and so the orientation of the LM in space is not known either. They
say they relayed data from the command module to the LM and knowing the command module orientation they could translate that to the LM orientation.
But that cannot be true as the explosion twisted the LM and command module. They say the stack was "tin canned" and they would not know the
rotational orientation of the LM to the command module to begin with. Not with the great accuracy required to fly the ship.
Also you see above I turned up something even more compelling. The system's center of mass would have been altered by way of the alleged explosion.
That is the center of the system that needs to be pushed so that it goes straight. Think of a rocket engine pushing at your head. That is going to
spin you. If it pushes in the center of your body you'll go straight. With spaceships knowing the center of the ship's body is critical to make it
go straight. They had no way to determine this from the computer data in the command module so we can tell right there the story about the ship
flying back to the right trajectory around the moon was made up.
edit on 10-2-2013 by hugediscovery because: corrected "of"