Results 281 to 290 of about 248,228 (361)
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Nozzles: Nozzle-less Devices Defined
Journal of the American Rocket Society, 1945This is a complicated, but exact way of saying that any channel (converge n t divergent, straight or convergentdivergent) through which fluids expand to convert their heat or pressure energy into velocity in a given direction is a nozzle. Since the mass of gas is given a velocity at the expense of its heat or pressure energy, it is seen that the heat ...
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AIAA Journal, 2002
A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
E. A. Wilson, D. Adler, P. Bar-Yoseph
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A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
E. A. Wilson, D. Adler, P. Bar-Yoseph
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Flow phenomena in advanced rocket nozzles - The plug nozzle
34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998In recent years, plug nozzles have gained a renewed interest in space business. In principle, this nozzle concept offers a continuous altitude adaptation up to its design pressure ratio. But, the flow adaptation achieved with this advanced rocket nozzle concept induces shocks and expansion waves resulting in exit profiles far away from idealized one ...
Hagemann, G., Immich, H., Terhardt, M.
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Symposium (International) on Combustion, 1963
No definitive experimental work has been done with condensation via homogeneous nucleation and very little work apparently has been done with condensation in nozzle flow, where the complications of a dynamic system are added. A review is given of the theories of homogeneous nucleation and of growth during condensation from the vapor phase.
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No definitive experimental work has been done with condensation via homogeneous nucleation and very little work apparently has been done with condensation in nozzle flow, where the complications of a dynamic system are added. A review is given of the theories of homogeneous nucleation and of growth during condensation from the vapor phase.
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Truncated Perfect Nozzles in Optimum Nozzle Design
ARS Journal, 1961A graphical technique for selecting optimum nozzle contours from a family of truncated perfect nozzles is presented which permits simultaneous consideration of various types of optima. This procedure includes the effects of friction, as well as the thermodynamic properties of the reacting gas.
J. H. AHLBERG +3 more
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American Industrial Hygiene Association Journal, 1975
A mathematical model is proposed to describe the sampling bias in anisokinetic sampling of aerosols. The nozzle sampling bias is described as a function of the particle's free stream inertial parameter, P, and the particle's free stream Reynolds number, Re0, and the suction ratio, w0, of the sampling nozzle.
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A mathematical model is proposed to describe the sampling bias in anisokinetic sampling of aerosols. The nozzle sampling bias is described as a function of the particle's free stream inertial parameter, P, and the particle's free stream Reynolds number, Re0, and the suction ratio, w0, of the sampling nozzle.
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AIAA Journal, 1998
During the sea-level ignition process of rocket motors, the nozzle is subjected to an overexpanded e ow condition that can cause high side loads. Prediction of the symmetrical separation location is the e rst key step to a determination of the range of possible side-load magnitudes.
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During the sea-level ignition process of rocket motors, the nozzle is subjected to an overexpanded e ow condition that can cause high side loads. Prediction of the symmetrical separation location is the e rst key step to a determination of the range of possible side-load magnitudes.
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Nozzle Damping of the Fluidic Nozzle
2019For a thrust-adjustable rocket motor, to avoid unstable combustion, we not only need to consider nozzle damping before thrust adjustment, but also need to consider nozzle damping variation thereafter, and it is important to learn about the influence of nozzle damping before, and after, thrust adjustment.
Kan Xie, Xinmin Chen, Junwei Li, Yu Liu
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Journal of Spacecraft and Rockets, 1971
An analytical method is presented for the design of axisymmetric annular nozzles to yield uniform and axial flow. Computed results are used to display typical matched inner and outer contours, the effects of major initial flow variables, and the resulting wall forces.
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An analytical method is presented for the design of axisymmetric annular nozzles to yield uniform and axial flow. Computed results are used to display typical matched inner and outer contours, the effects of major initial flow variables, and the resulting wall forces.
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