1996 Volume 39 Issue 1 Pages 1-9
A super/hypersonic aircraft is expected to be realized in the 21st century. Ramjet engines with subsonic flow combustion may be used for its propulsion up to the flight speed range of Mach 6, in combination with other accelerating propulsive systems. Much research has been conducted on combustion problems related to this engine, but new and additional technologies are still needed to cope with the problems encountered in the advanced ramjet engine. By reviewing past work on flameholding techniques, the author will introduce recent research results in an attempt to resolve the problems involved in realizing super/hypersonic vehicle engines.