Results 111 to 120 of about 17,991 (229)

Multiaxis thrust vectoring using axisymmetric nozzles and postexit vanes on an F/A-18 configuration vehicle [PDF]

open access: yes
A ground-based investigation was conducted on an operational system of multiaxis thrust vectoring using postexit vanes around an axisymmetric nozzle.
Bowers, Albion H.   +4 more
core   +1 more source

Static internal performance of ventral and rear nozzle concepts for short-takeoff and vertical-landing aircraft [PDF]

open access: yes
The internal performance of two exhaust system concepts applicable to single-engine short-take-off and vertical-landing tactical fighter configurations was investigated.
Carson, George T., Jr., Re, Richard J.
core   +1 more source

A review of instability and noise propagation in supersonic flows [PDF]

open access: yes
Originally analytical and numerical models were to be developed for noise production in supersonic jets, wakes and free shear layers. While the effort was concentrated initially on these aspects, other topics were also pursued, most were of interest to ...
Daudpota, Q. Isa, Lakin, William D.
core   +1 more source

An improved analytical model of the separation region on boattail nozzles at subsonic speeds [PDF]

open access: yes
A practical engineering calculation was developed to model the viscous effects of a separated, reverse flow region on afterbody pressures and drag.
Buteau, J. D.   +2 more
core   +1 more source

Effect of nozzle and vertical-tail variables on the performance of a 3-surface F-15 model at transonic Mach numbers [PDF]

open access: yes
An investigation was conducted in the Langley 16 foot transonic tunnel to determine the longitudinal aerodynamic characteristics of twin two dimensional nozzles and twin baseline axisymmetric nozzles installed on a fully metric 0.047 scale model of the F-
Bare, E. A., Pendergraft, O. C., Jr.
core   +1 more source

A study of nozzle and ejector flow problems by the method of integral relations [PDF]

open access: yes
The application of the method of integral relations to nozzle and ejector flow problems was examined. For nozzle flow problems, the general formulation is that the approaching flow may be rotational.
Chow, W. L., Howlett, L. D.
core   +1 more source

Simulation of transient flow in a shock tunnel and a high Mach number nozzle [PDF]

open access: yes
A finite volume Navier-Stokes code was used to simulate the shock reflection and nozzle starting processes in an axisymmetric shock tube and a high Mach number nozzle.
Jacobs, P. A.
core   +1 more source

Instability of a supersonic shock free elliptic jet [PDF]

open access: yes
This paper presents a comparison of the measured and the computed spatial stability properties of an aspect ratio 2 supersonic shock free elliptic jet.
Baty, Roy S.   +2 more
core   +1 more source

Direct Numerical Simulation of Acoustic Disturbances in the Rectangular Test Section of a Hypersonic Wind Tunnel [PDF]

open access: yes
Direct numerical simulations (DNS) of the full-scale rectangular nozzle of a hypersonic wind tunnel are conducted to study the acoustic freestream fluctuations radiating from turbulent boundary layers (TBLs) along the nozzle walls.
Choudhari, Meelan M.   +3 more
core   +1 more source

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