Throat Shifting Method of Fluidic Thrust Modulation (FTM) & Fluidic Thrust-Vectoring (FTV)

Jian Yang Lim


Thrust vectoring and control is one of the most significant design enhancements of high-performance aircraft manoeuvrability adopted by aircraft designers today. Whereas previous mechanical methods for controlling and vectoring the thrust have proven to be complex and costly, fluidic thrust vectoring has the potential to be a cheaper and simpler alternative. In recent years, fluidic thrust vectoring and modulation have generally been developed into four different methods. This report reviews the four different methods of thrust vectoring, and develops an understanding for the significant factors that affect one of the less well-known methods of fluidic thrust vectoring and control – the throat shifting method. The thesis adopts a design of experiments approach to calculate the significance of the factors, and obtains a detailed understanding of how the factors interact with each other to produce the best throat shifting nozzle performance in terms of thrust vectoring and thrust modulation with the lowest secondary mass input required.


Fluid mechanics; aerodynamics; throat shifting;

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