A Framework for Testing Differential Throttling in Linear Aerospike Nozzle

In current paper, numerical and experimental pressure data is presented where these measurements are obtained over the top and bottom surfaces of the plug (along symmetry plane) of linear aerospike nozzle in non-differential and differential throttling configurations. Cold-flow experiments are carried out by using the existing nozzle test rig in differential configuration only. A linear aerospike nozzle, with 40% plug, has been used for both the cases. Mean-pressure values are measured over the top and bottom surfaces of the plug of linear aerospike nozzle. In differential throttling configuration, experimental and numerical pressure data has been compared. While, in non-differential and differential throttling configurations, further numerical pressure data over the surfaces of the plug is presented. This pressure data is used to describe differential flow evolution over the linear aerospike nozzle. Numerical and experimental data matches closely.