I wrote: I feel I'm getting a little more entertainment out of the explanation about > the use of the jerk vector to obtain energy from the unbalanced wheel than > I should. >
No double entendre intended. The scheme just sounds so wishful and fanciful that it's hard not to be a little amused by it. That is not to say it might not be getting at something interesting. I'm equal parts smirking at it and mystified by it. Maybe there is a way to do an end run around one of the third- or fourth-order derivatives of the position vector in order to get the RAR to work. Terry has pointed us to the description of a fellow named Grimer; I do not recall if we have seen RAR's own description of the theory behind their contraption. Eric
