In reply to mix...@bigpond.com's message of Sun, 03 Dec 2017 13:33:57 +1100: Hi,
PS - I think this is what I recollect reading some time ago:- https://en.wikipedia.org/wiki/Variable_Specific_Impulse_Magnetoplasma_Rocket Regards, Robin van Spaandonk local asymmetry = temporary success
