. "rocket-ramjet" . . "Ramjet" . . "solid-fueled integral rocket/ramjet" . "Rocket-ramjet" . "turbo-ramjet" . . . . . . . "Ramjet#Soviet Union and Russia" . . . . . . "ramjets" . . . . . "GIRD-04 ramjet engine" . "supersonic ramjet" . "ramjet engines" . "ramjet engine" . "ramjet" . . "Ramjet" . . . "Ramjet#Integral_rocket_ramjet.2Fducted_rocket" . "Ramjet#Air turboramjet" . "ramjet-rocket propulsion system" . .