The Methane Sifter was a hovercraft designed to operate on planets with dense atmospheres rich in ammonia, methane and similar gases, for which normal repulsorlift vehicles were not suited.


The vehicle employed twin ramjet scoops to draw the dense atmosphere into its compressed ignition chamber, where the gases would be burned to produce the necessary energy to power the large hover vanes. The result was an efficient and virtually noiseless propulsion system.


The Methane Sifter was favored by scouts and other explorers of inhospitable worlds.