Would it increase the power of the jet engine due to heavier atoms being exhausted out the back?

For the same reason would it slow down an internal combustion engine?


closed as too broad by Pritt Balagopal, Jan, andselisk, airhuff, Mithoron Aug 12 '17 at 12:08

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  • $\begingroup$ I thought jet engines burn kerosene, and hydrogen is more suited for rockets. $\endgroup$ – andselisk Aug 12 '17 at 3:54
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    $\begingroup$ @andselisk There are several hydrogen powered jets and cars that have been produced. $\endgroup$ – Alex Aug 12 '17 at 3:56
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    $\begingroup$ @Pritt Balagopal Its not very complicated I don't think. Deuterium is a hydrogen atom with double the mass. I just want to know what effect in theory that should have on an engine burning it. $\endgroup$ – Alex Aug 12 '17 at 5:18
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    $\begingroup$ Very roughly there is nothing to gain. D2 will double the mass of the rocket while providing less energy content (D2 dissociation energy is higher than that of H2). $\endgroup$ – Alchimista Aug 12 '17 at 13:07
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    $\begingroup$ Sorry. You asked about jet or IC engines :)) but it should work the same. Momentum and energy counts, at least for jet. In IC again you have a heavier vehicle and less energy inside, you should both have littler acceleration and lower final attainable speed. $\endgroup$ – Alchimista Aug 12 '17 at 13:07

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