INTEGRATED APPROACH TO GAS-DYNAMIC DESIGNING OF SUPERSONIC AIR INTAKES OF AIRCRAFT

Aleksey Kornev,Victor Yatsenko,Sergii Stetsenko,Anatoliy Smolyakov,Dmytro Kalinichenko

doi:10.3846/aviation.2021.12327

Abstract

The analytical and experimental studies of the aircraft’s supersonic air intakes have been carried out. An integrated approach to the gas-dynamic designing of aircraft’s supersonic air intakes that eliminates the scale effect problem of a wind tunnel with a small-sized testing area is proposed. The designing approach accelerates the development process and reduces the resource intensity due to the rational distribution of tasks between numerical and physical experiments. The results of the unique tests of the scaled ramjet’s air intake physical model in the supersonic wind tunnel are presented.

Highlights

At present, the world’s leading aerospace companies are intensifying their activities on the development of a supersonic multi-purpose aircraft
The purpose of this paper is to present an integrated approach to designing the gas-air ducts of supersonic aircraft’s propulsion systems (PS) using the example of flows in the models of ramjet’s supersonic air intake via a rational computational fluid dynamic (CFD) – Wind tunnel tests (WTT) combination
The classic techniques of aerodynamic designing have a number of key limitations that restrict the development of new high-speed ramjet air vehicles, including the following: 1. Recreation of ramjet workflow on scaled models is impossible due to non-scalability of the fuel-air mixture stoichiometric parameters

Summary

Introduction

The world’s leading aerospace companies are intensifying their activities on the development of a supersonic multi-purpose aircraft. Both CFD and WTT technologies have many disadvantages related to limited WT technical features causing difficulties with aerodynamic design of the PS’s air ducts and intakes. The range of the airflow conditions which are available while WT tests (that is according to International Standard Atmosphere (ISA)), is short and doesn’t cover that one needed for simulating of modern supersonic aircraft Because of these issues, the development of the design technique for the internal gas-air ducting paths of supersonic aircraft is a pressing scientific and technical challenge. The purpose of this paper is to present an integrated approach to designing the gas-air ducts of supersonic aircraft’s PS using the example of flows in the models of ramjet’s supersonic air intake via a rational CFD – WTT combination. The presented approach is implemented by integrated computer simulation technologies (including applied CAD to create a parametrically controlled 3D geometry) with emphasis on virtual tests in the environment of digital thermo-gas dynamic flow simulations

Special features of WT-tests of the supersonic air intake scaled model

Conclusions