Effect of Ramp Geometry on Single Expansion Ramp Nozzle Performance Characteristics

What is it about?

In high speed flight regimes, the drag acting on the aerospace vehicle body assumes a large significance in determining the overall performance of the vehicle. To mitigate the drag effects, a Single Expansion Ramp Nozzle (SERN) has been proposed and explored for hypersonic flight, wherein the expansion surface of the propulsion nozzle is integrated with the vehicle afterbody. This results in offering less surface area for drag to act on, and also reduces the overall vehicle weight as compared to a vehicle using conventional nozzles. This paper aims to present a computational study of flow characteristics and performance in an over-expanded state of a 2-D planar SERN of three ramp geometries.

Featured Image