Mach 4 Simulating Experiment of Pre-Cooled Turbojet Engine Using Liquid Hydrogen

Hideyuki Taguchi,Daisaku Masaki,Hiroaki Kobayashi,Motoyuki Hongoh,Kenya Harada,Shunsuke Nishida

doi:10.3390/aerospace9010039

Abstract

This study investigated a pre-cooled turbojet engine for a Mach 5 class hypersonic transport aircraft. The engine was demonstrated under takeoff and Mach 2 flight conditions, and a Mach 5 propulsion wind tunnel test is planned. The engine is composed of a pre-cooler, a core engine, and an afterburner. The engine was tested under simulated Mach 4 conditions using an air supply facility. High-temperature air under high pressure was supplied to the engine components through an airflow control valve and an orifice flow meter, and liquid hydrogen was supplied to the pre-cooler and the core engine. The results confirmed that the starting sequence of the engine components was effective under simulated Mach 4 conditions using liquid hydrogen fuel. The pre-cooling effect caused no damage to the rotating parts of the core engine in the experiment.

Highlights

JAXA is investigating a design approach to a Mach 5 hypersonic passenger aircraftJAXA is1),investigating design approach to athe 5 hypersonic passenger aircraft [1][1] (Figure which coulda significantly reduce flight time for intercontinental travel. (Figure1), which could significantly reduce the flight time for intercontinental travel
The following plans demonstrate the feasibility of hypersonic engine
The following plans demonstrate the feasibility of hypersonic propulsion systems

Summary

Introduction

JAXA is investigating a design approach to a Mach 5 hypersonic passenger aircraftJAXA is1),investigating design approach to athe 5 hypersonic passenger aircraft [1][1] (Figure which coulda significantly reduce flight time for intercontinental travel. (Figure1), which could significantly reduce the flight time for intercontinental travel. JAXA is investigating a design approach to a Mach 5 hypersonic passenger aircraft. JAXA is1),investigating design approach to athe 5 hypersonic passenger aircraft [1]. 1), which could significantly reduce the flight time for intercontinental travel. The. The X-43A [2] flight experiment successfully demonstrated hypersonic flight with a X-43A [2]engine. Flight experiment successfully demonstrated hypersonic flight with propulsion a scramjet scramjet. The following plans demonstrate the feasibility of hypersonic engine. The following plans demonstrate the feasibility of hypersonic propulsion systems

Methods

Results

Conclusion