Propulsion Systems with Air Precooling for Aerospaceplane

Abstract

<div class="htmlview paragraph">Using LH2 heat sink capacity for air precooling in turbojets allows to increase specific impulse and in many cases to reduce specific mass (mass-to-sea level thrust ratio).</div> <div class="htmlview paragraph">A number of precooled turbojet schemes are considered. Classification of turbojet according to the cooled air amount and depth of cooling is proposed. ATR with extended precooling (Tout=100K) is examined in more detail.</div> <div class="htmlview paragraph">For propulsion systems including different types of engines, running simultaneously the concept of LH2 heat sink capacity concentration for turbojet air precooling is proposed.</div>