Aerospace Engineering Commons^™

Transient Jet Interaction Force And Moment Reconstruction In Dynamic Wind-Tunnel Testing, Mark Edward Smith

Doctoral Dissertations

In recent years there has been an increased interest in understanding the effect of missile divert jets upon the pressure distribution on the surface of a missile. Missile divert jets are jets located near the missile center of mass and thrusting along a lateral axis of a missile. The firing of a divert jet perturbs the pressure dis- tribution and thus alters the aerodynamic force acting on the missile. This is the aerodynamic jet interaction e®ect. It is essential to characterize and understand this effect when designing robust missile autopilots.

Testing techniques for determining the transient jet interaction effect must …

Computational Investigation Of The Discharge Coefficient Of Bellmouth Flow Meters In Engine Test Facilities, Charles Lynn Sebourn

Doctoral Dissertations

In this thesis computation of the discharge coefficient of bellmouth flow meters installed in engine test facilities is presented. The discharge coefficient is a critical parameter for accurately calculating flow rate in any flow meter which operates by means of creating a pressure differential. Engine airflow is a critical performance parameter and therefore, it is necessary for engine test facilities to accurately measure airflow.

In this report the author investigates the use of computational fluid dynamics using finite difference methods to calculate the flow in bellmouth flow meters and hence the discharge coefficient at any measurement desired.

Experimental boundary layer …