Design and Mathematical Modeling of Fuel Feed System for Dual Fuel Scramjet

Abstract

A Fuel Feed System (FFS) is designed to supply fuels for a Dual Fuel Scramjet engine. The system design is carried out based on the operational requirements of flow rate, pressure, duration within the envelope constraints. The scramjet engine consists of an effervescent injector with liquid hydrocarbon as the main fuel. Gaseous Hydrogen is used for pilot ignition and for emulsifying the liquid hydrocarbon. Hydrogen gas for both the requirements are met through a single source and supply system. The liquid hydrocarbon storage system consists of a standalone propellant tank with positive expulsion device and cavitating venturis. Mathematical modelling is done on the system and from the model outputs, the operational efficacy of the feed system throughout the flight duration is ensured.