John Carmak wrote JC> Krushnik Effect!
JC> The base flare is only held about three inches off the ground by the wire JC> rope isolator feet, so the rush of gas from the main engine has to JC> accelerate a fair amount to escape radially. The 4' diameter flare base JC> has 1800 square inches of area, so even a small pressure drop would JC> overcome the 250 or so pounds of net engine thrust. JC> John Carmack JC> _______________________________________________ JC> ERPS-list mailing list JC> [EMAIL PROTECTED] JC> http://lists.erps.org/mailman/listinfo/erps-list That a radially outward flowing stream of gas produces a pressure drop between the ground and the base of a vehicle can be demonstrated with a simple device. Take a tube of approx. 10mm ID. Drill a hole of tube AD in a disc of approx. 80mm diameter and put the tube and disc together by glue or solder or whatever. If you now put a piece of thin cardboard of 100x100mm on the table, hold the disc 5mm or so above the cardboard and blow some air down the tube, the cardboard will be sucked against the disc. http://groups.physics.umn.edu/demo/old_page/demo_gifs/2C20_40.GIF Hans Ulrich Ammann mailto:huammann@;aro.ch http://www.spl.ch _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
