Iyo yakajairika hollow cone kamwene yekufema kona ndeye 51 ° -180 °.

Iyo isina mhodzi koni kamwene ine maviri dhizaini nzira. Chekutanga kushandisa iyo inotenderera mhango mukati memubhu kutenderedza iyo mvura nekumhanyisa, kurasa iyo mvura kunze, nekuiparadzira pamwe nekakona pane kamwene, nekudaro ichigadzira isina mhoni koni yekumwaya chimiro. > Iyo isina mhodzi koni kamwene yekushanda musimboti inokodzera iyo isina mhodzi koni kamwene nekona diki, uye chinodzora chinhambwe chemvura ipfupi, saka ine zvakanyatsojeka zvinodiwa mukugadzira.

Imwe homwe yekoni kamwene dhizaini ndeye kutenderedza iyo mvura kuburikidza neiyo swirl mhango mukati memuburi (kutenderera kuno hakusi kukanda iyo mvura kunze, asi kuita kuti mvura iyerere zvakanyanya zvakaenzana kana yasvika pamusoro pegwara pamusoro), uyezve Iyo inosaswa kuburikidza neyekutungamira pamusoro kuti igadzire mhango koni yekumwaya chimiro.Rudzi rwemhubu runokodzera hombe-kona mhango yekoni yekutsvaira .