<div class="section abstract"><div class="htmlview paragraph">THIS paper discusses the modern concept of afterburner design, breaking down the various major components and treating, as fully as allowable under secrecy imposition, the problems confronting the design engineer.</div><div class="htmlview paragraph">Because an afterburner must provide short bursts of speed during take-off, climb, and combat maneuvering, without affecting the normal operation of the main turbojet engine, it is necessarily very complex. Essentially, it is a complete engine attached to the exhaust of the turbojet engine. By burning additional fuel in a specially designed tailpipe, the afterburner raises the temperature of the jet gases after they leave the turbine.</div><div class="htmlview paragraph">Early designs are evaluated, with advantages and disadvantages pointed out. Actuator power sources are dealt with and suggestions given for future development.</div><div class="htmlview paragraph">Comparisons are drawn between the nonafter-burning jet engine and that incorporating an afterburner.</div><div class="htmlview paragraph">Where secrecy imposition makes specific discussion impossible, a general introduction to the subject is attempted.</div></div>