Flame holder
A flame holder is a bluff body mounted in high-velocity combustible flow to create a local region of turbulence and low velocity in which a flame is stabilized.<ref>The Cambridge Aerospace Dictionary,Bill Gunston 2004, Editor, Jane’s Information Group,Template:ISBN</ref>
Jet engine afterburners and ramjets require a flame holder.<ref>Template:Cite book</ref>
The simplest design, often used in amateur projects, is the can-type flame holder, which consists of a can covered in small holes. Much more effective is the H-gutter flame holder, which is shaped like a letter H with a curve facing and opposing the flow of air. Even more effective, however, is the V-gutter flame holder, which is shaped like a V with the point in the direction facing the flow of air. Some studies have suggested that adding a small amount of base bleed to a V-gutter helps reduce drag without reducing effectiveness.<ref>Template:Cite web</ref> The most effective of the flame holders are the step type flame holder and the strut type flame holder.
The first mathematical model of a flame holder was proposed in 1953.<ref>Template:Cite journal See p. 552.</ref>
See also
- Index of aviation articles
- AVPIN - A monofuel used to power turbojet starter motors.
- Components of jet engines
- Exhaust mixer