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From: Gary L. <Ult...@gm...> - 2007-03-21 17:46:02
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Hi folks, I noticed that there are no values given in Jossh for the power input of engines. I opened Jumpgate and set up a basic ship with 2 Money engines. The ship configuration screen told me that thouse 2 engines need 1895 kilowatts (wich equates to 947.5 kilowatts each). After doing some rough calculations I noticed that if you multiply the efficiency (80%) with the required power input (0.8 * 947,5 kilowatts = 758 kilowatts) you will recieve the maximum thrust (the Money engine has a maxium thrust of 758 kilonewton). So I guess that the mightygames team defined that 1 Watt power input (at an efficiency of 100%) results in 1 newton thrust. Some guy from the blenderartists forum told me that you can't calculate the power input from the thrust (which is nothing else but the power output). "It would totally depend of the form of generation, conversion, and propulsion. You can't calculate the gravimetric results without total detail of those three elements, and then you've gotto factor in local gravimetric resistance." So that's why I guess that the mightygames team defined something. I also noticed that if we use the definition 1 watt input => 1 newton output we would recieve a power input of 931 kilowatts for the s-e-15 engine. The ship configuration screen of jumpgate tells me that it takes 943 kilowatts to power the s-e-15 engine at maxium thrust. What is your prefered solution? Either we can ignore thouse slight differences and take the real values for the power input which we have calculated base on the definition 1 watt input => 1 newton output or we have to recalculate all efficiency values because they are obviously wrong in Jossh. Regards, Gary |
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From: Christoph B. <eg...@gm...> - 2007-03-21 19:15:18
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Am Mittwoch, den 21.03.2007, 18:48 +0100 schrieb Gary Luck: > Hi folks, > I noticed that there are no values given in Jossh for the power input of engines. I opened Jumpgate and > set up a basic ship with 2 Money engines. The ship configuration screen told me that thouse 2 engines > need 1895 kilowatts (wich equates to 947.5 kilowatts each). > > After doing some rough calculations I noticed that if you multiply the efficiency (80%) with the > required power input (0.8 * 947,5 kilowatts = 758 kilowatts) you will recieve the maximum thrust (the > Money engine has a maxium thrust of 758 kilonewton). So I guess that the mightygames team defined that 1 > Watt power input (at an efficiency of 100%) results in 1 newton thrust. > > Some guy from the blenderartists forum told me that you can't calculate the power input from the thrust > (which is nothing else but the power output). "It would totally depend of the form of generation, > conversion, and propulsion. You can't calculate the gravimetric results without total detail of those > three elements, and then you've gotto factor in local gravimetric resistance." > > So that's why I guess that the mightygames team defined something. I also noticed that if we use the > definition 1 watt input => 1 newton output we would recieve a power input of 931 kilowatts for the > s-e-15 engine. The ship configuration screen of jumpgate tells me that it takes 943 kilowatts to power > the s-e-15 engine at maxium thrust. > > What is your prefered solution? > > Either we can ignore thouse slight differences and take the real values for the power input which we > have calculated base on the definition 1 watt input => 1 newton output or we have to recalculate all > efficiency values because they are obviously wrong in Jossh. Puh. Difficult question. I would stick with "being as close as possible to Jumpgate with the least amount of work". So if you can calculate the value (almost) I won't force you to test every single enginge and write down the data. I'd say: Go for whatever you like :-) |
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From: Gary L. <Ult...@gm...> - 2007-03-22 17:01:55
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Christoph Brill wrote: >> What is your prefered solution? >> >> Either we can ignore thouse slight differences and take the real values for the power input which we >> have calculated base on the definition 1 watt input => 1 newton output or we have to recalculate all >> efficiency values because they are obviously wrong in Jossh. > > Puh. Difficult question. I would stick with "being as close as possible to Jumpgate with the least amount > of work". So if you can calculate the value (almost) I won't force you to test every single enginge and > write down the data. > I'd say: Go for whatever you like :-) Ok thanks. I'll stay with the 1 watt => 1 newton definiton then. Regards, Gary |