The Methane Sifter Ramjet, a type of hovercraft, was specifically engineered for use on planets possessing thick atmospheres abundant in gases like ammonia and methane, where conventional repulsorlift vehicles could not function effectively.
This vehicle utilized a pair of ramjet intakes to pull the thick atmospheric gases into its pressurized combustion area. Inside, these gases were ignited, generating the power needed to drive the sizable hover vanes. This configuration resulted in a propulsion system that was both highly effective and remarkably quiet.