On Sat, 27 Jun 2020 18:34:04 -0700 (PDT), Thomas RUX <xxxxxx@comcast.net> wrote to Freelance Traveller: >Hello James, > >> On 06/27/2020 4:43 PM James Catchpole - jlcatchpole at googlemail.com <xxxxxx@simplelists.com> wrote: >> >> >> It occurs to me that if JTAS #24 is taken as accurate, then the reason why so many ship plans have those big rocket nozzles at the back when manouver drives are reactionless becomes clear. They are actually the vents through which all that fuel is ejected as coolant! >> >How is the coolant distributed to cover the entire hull? If you accept either this or the "jump bubble filled with H2 to prevent jumpspace from interacting with the hull" mechanism, then consider that _any_ non-solid will tend to expand in vacuum to fill all available space. Basic (US 10th/11th grade, UK probably-third/fourth year) physics. ®Traveller is a registered trademark of Far Future Enterprises, 1977-2020. Use of the trademark in this notice and in the referenced materials is not intended to infringe or devalue the trademark. -- Jeff Zeitlin, Editor Freelance Traveller The Electronic Fan-Supported Traveller® Resource xxxxxx@freelancetraveller.com http://www.freelancetraveller.com Freelance Traveller extends its thanks to the following enterprises for hosting services: onCloud/CyberWeb Enterprises (http://www.oncloud.io) The Traveller Downport (http://www.downport.com)