The airframe-integrated linear-spike nozzle concept applied to an external nozzle for high-speed aircraft was evaluated with regard to the thrust augmentation capability and the trim balance. The main focus was on the vehicle aftbody. The baseline airframe geometry was first premised to be a hypersonic waverider design. The baseline aftbody case had an external nozzle comprised of a simple dive...

A multiaxis thrust-vectoring nozzle designed to have equal ow-turning capability in pitch and yaw was conceived and experimentally tested for internal static performance at Langley Research Center. The cruciform-shaped, convergent-divergent nozzle turned the ow for thrust vectoring by deeecting the divergent surfaces of the nozzle, called aps. Methods for eliminating physical interference betwe...

An experimental investigation of the boiling-up dynamics a jet superheated water being discharged through short nozzle small diameter (d=0.2 mm) has been conducted. A change in shape traced at various degrees superheat. complete flow opening established temperature range T=493-583 K. The instability breakup revealed. On basis data, dependence variations angle on saturation pressure plotted dime...

The flowfield characteristics are experimentally studied in the inter-nozzle region of free jets from twin and triple supersonic nozzles. nozzle is designed for Mach number 2.0, spacing twice exit diameter. impact multiple on flow such as jet spread, core, shock wave structure explored using pitot pressure readings schlieren technique. For 2.0 at ratio (NPR) 2 8.5, pressures measured along cent...

A m ultiaxis thrust-vectoring nozzle designed to have equal ow-turning capability in pitch and yaw was conceived and experimentally tested for internal static performance at Langley Research Center. The cruciform-shaped, convergent-divergent nozzle turned the ow for thrust vectoring by deeecting the divergent surfaces of the nozzle, called aps. Methods for eliminating physical interference betw...

The application prospect of a flow focusing/blurring nozzle is broad but research on gas-liquid inside the not comprehensive. mixing difficult to study by visualization experiment, so this paper proposes or gray scale level distribution experimental images. results show that increase air rate beneficial two-phase nozzle, while influence water rate, tube hole distance (the between inner and outl...

Abstract:-The FSAE guidelines state that it is mandatory for each and every car participating in the said event to have a single circular 20mm restrictor in the intake system. All the air flowing to the engine must pass through this restrictor. Conventionally, a Venturi Nozzle is used as a restrictor. In our research, we have proposed two Nozzles: De-Laval Nozzle and Bell Nozzle as an alternati...

Lateral nozzle forces are known to cause severe structural damage to any new rocket engine in development. Currently there is no fully coupled computational tool to analyze this fluid/structure interaction process. The objective of this study was to develop a fully coupled aeroelastic modeling capability to describe the fluid/structure interaction process during the transient nozzle operations....

Extrusion-based 3D printing is steadily gaining importance as a manufacturing technique due to its flexibility and wide range of possible end-products. In the medical field, being exploited for variety applications one these production personalised medicines. However, despite many proof-of-concept studies, more thorough insights in itself required material properties are needed before can be fu...

The hydrodynamic effect exerted by a nozzle placed in front of KP505 propeller on the propulsive performances is studied using extensive numerical simulations. influence NACA 0015 with chord length 0.3 diameter, D, mounted at 0.2 D plane for various range relevant diameters and different angles attack. A detached eddy simulation (DES)-based hybrid technique implemented ISIS-CFD finite volume so...