Effect of aeroelasticity on the acoustic signature of TOP contoured rocket nozzles in overexpanded conditions

TOP contoured nozzles, with large area-ratios, are commonly employed in rocket propulsion systems as they feature an excellent thrust-to-weight ratio. A significant shortcoming to this design is that, during the startup and shutdown transients of a LRE, the internal nozzle flow progresses through a series of overexpanded flow states - Free Shock...

A Numerical Investigation into Transonic Flight on Mars Utilizing a 2-D URANS Approach

Interest in powered flight on Mars has been growing in recent years, and as such new developments are being made in determining the effects the Martian atmosphere has on the flow physics and performance, specifically with regards to similarity parameters: the Reynolds number & the Mach number. This paper aimed to investigate whether the...

Validatable Shock-Wave/Turbulent Boundary-Layer Interaction over a Compliant Panel

Shock-Wave/Turbulent-Boundary Layer Interactions (SWTBLI) often occur in applications of technological interest. The associated inherent low-frequency unsteadiness dictates the use of Large-Eddy Simulation (LES) approaches to resolve the interaction, which unavoidably implies a very high computational cost. For this reason, no well-resolved long...

Oblique Shock Wave-Boundary Layer Interactions Over Porous Plates

This report discusses an investigation into the effect of a porous plate covering a cavity, on an oblique shock wave-boundary layer interaction. Four porous plates with different hole sizes and porosities, as well as a solid, 'dummy', plate, have been tested in a Mach 2 wind tunnel whereby an oblique shock wave (produced by a wedge) impinged on...

Submerged Ramjet Intake Modeling

To evaluate the performance of proposed submerged intakes in an early design phase, a performance analysis model able to evaluate a range of intake geometries is required. This document details how such a model was developed with the use of available sub-models for specific flow features. A formulation of the method of characteristics suitable...