On Mon, Jun 10, 2019 at 9:24 AM Uwe Klein <uwe@xxxxxxxxxxxxxxxxxxx> wrote:
Am 10.06.2019 um 17:27 schrieb Craig Fink:anything you add to the Hydrogen will radically degrade this speed of sound
Just one small example is Hydrogen's Speed of Sound,
https://pages.mtu.edu/~suits/SpeedofSoundOther.html
As everyone knows, the Mach number at your copper heat sink throat is
1, the speed of sound. Well, Hydrogen at room temperature, Mach One at
the throat with no expansion, no engine bell, will have an ISP of 130.
Nitrogen an ISP of 30 for comparison, 70 with expansion nozzle. And the
Speed of Sound and ISP at the throat of an engine only gets better with
temperature.
Isn't the speed of sound of the combustion product going through the
throat of higher relevance ?
( except you are going for cold gas thrusters.)
What is the speed of sound in disassociated single H ?
Of course, if your burning the hydrogen in the engine. Simply put,