Journal of Aeronautical Engineering

Journal of Aeronautical Engineering

Effects of MRD Concept on the Performance of a Supersonic Air Inlet

Document Type : Original Article

Authors
Mehdi Naturizadeh
Javad Sepahi-Younsi
Mechanical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad
10.22034/joae.2024.412608.1201
Abstract
This study deals with the numerical investigation of the effects of the of multi row disks on the performance parameters of an axisymmetric supersonic air inlet of the mixed compression type at free stream Mach number of 2. Inlet performance parameters include drag coefficient, distortion coefficient, total pressure recovery and mass flow ratio. The multi row disk concept is one of the new methods to control the flow and the boundary layer. In this study, after validating the results of numerical simulation with the help of experimental results, the desired inlet has been investigated in terms of performance parameters in different back pressure ratios. Then, the effects of number of disks, length and depth of the cavities were also investigated. The results showed that using the multi row disks has a favorable effect on the drag coefficient and mass flow ratio. It was also observed that the use of multi row disks postpones the subcritical operating condition, which is operationally very beneficial for the aerial vehicle, because it makes the flight envelope of the vehicle wider.
Keywords
Supersonic inlet
Multi row disk
Drag coefficient
Mass flow ratio
Total pressure recovery

Subjects

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Journal of Aeronautical Engineering
Volume 26, Issue 1
August 2024
Pages 135-148

  • Receive Date 20 August 2023
  • Revise Date 20 October 2023
  • Accept Date 14 May 2024