The main technical challenges as I see them: * The air/NG/water compressors * The LKT's "buckets" are gonig to have to sustain large transients and loads in force and voltage * A fixture for the LKT that can hold megavolts without arcing * Characterizing and then engineering for start up and shut down transients * Integration of the LKT components with the rocket itself
Are there intermediate steps toward solving these independently? On Tue, Apr 9, 2013 at 12:37 AM, Monroe L. King Jr. < [email protected]> wrote: > Hummmm interesting indeed. > > Monroe > > > -------- Original Message -------- > > Subject: [AR] Rocket Driven Lord Kelvin's Thunderstorm > > From: James Bowery <[email protected]> > > Date: Mon, April 08, 2013 10:17 pm > > To: vortex-l <[email protected]>, [email protected] > > > > > > Given the below results from the rocket propellant simulator: > > > > http://rocketworkbench.sourceforge.net/equil.phtml > > > > We have an air+methane+water fuel mixture rocket expelling droplets of > > liquid water travelling at 1305m/s with a Carnot efficiency of about 70%. > > > > If you take two such rocket engines and put them in place of the water > > droplets of a Lord Kelvin's Thunderstorm, you have would would appear to > be > > an electrohydrodynamic DC power station with the following rather > > characteristics: > > > > * very high voltage > > * high power to weight > > * reasonably efficient > > * burns a fuel that is cheap for at least the next several years > > * NOx in sub-ppm as the only pollutant other than CO2 (which is a green > > house gas) > > * might even be used as water treatment. > > * the only moving parts are the compressors > > * very little touble with cooling capacity given the H2O mass flow rate > > * with additional downstream equipment might be tuned to treat water as a > > side job > > > > Sorry for the cross-post to vortex-l as well as arocket but this is up > > Beatty's (vortex-l's) alley and certainly involves small scale liquid > > rocketry. > > Results > > > > Propellant composition > > Code Name mol Mass (g) Composition > > 976 WATER 512.0000 9223.8235 2H 1O > > 578 METHANE 55.0000 882.3353 1C 4H > > 15 AIR (DRY AT SEA LEVEL) 1.0000 15479.2332 835N 224O > 5AR > > Density : 2.261 g/cm^3 > > 5 different elements > > H O C N AR > > Total mass: 25585.392031 g > > Enthalpy : -5907.12 kJ/kg > > > > 149 possible gazeous species > > 3 possible condensed species > > > > CHAMBER THROAT EXIT > > Pressure (atm) : 100.000 54.524 1.000 > > Temperature (K) : 851.960 741.912 273.659 > > H (kJ/kg) : -5907.117 -6079.928 -6758.571 > > U (kJ/kg) : -6212.081 -6345.499 -6856.528 > > G (kJ/kg) : -13075.582 -12322.436 -9061.163 > > S (kJ/(kg)(K) : 8.414 8.414 8.414 > > M (g/mol) : 23.228 23.228 23.228 > > (dLnV/dLnP)t : -1.00000 -1.00000 -1.00000 > > (dLnV/dLnT)p : 1.00000 1.00000 1.00000 > > Cp (kJ/(kg)(K)) : 1.59515 1.54548 1.37312 > > Cv (kJ/(kg)(K)) : 1.23719 1.18752 1.01517 > > Cp/Cv : 1.28933 1.30143 1.35261 > > Gamma : 1.28933 1.30143 1.35261 > > Vson (m/s) : 627.05454 587.89672 355.38692 > > > > Ae/At : 1.00000 9.06046 > > A/dotm (m/s/atm) : 8.28502 75.06605 > > C* (m/s) : 828.50159 828.50159 > > Cf : 0.70959 1.57508 > > Ivac (m/s) : 1039.62801 1380.02098 > > Isp (m/s) : 587.89672 1304.95492 > > Isp/g (s) : 59.94878 133.06837 > > > > Molar fractions > > > > Ar 4.5393e-03 4.5393e-03 4.5393e-03 > > CO2 4.9932e-02 4.9932e-02 4.9932e-02 > > H2O 5.6468e-01 5.6468e-01 5.6468e-01 > > NO 2.9860e-07 2.9860e-07 2.9860e-07 > > NO2 5.0825e-08 5.0825e-08 5.0825e-08 > > N2 3.7903e-01 3.7903e-01 3.7903e-01 > > O2 1.8155e-03 1.8155e-03 > 1.8155e-03<hr>_______________________________________________ > > [email protected] > > http://exrocketry.net/mailman/listinfo/arocket >
