Results 81 to 90 of about 101,352 (285)

Effect of Height on the Supersonic Flow over a Blunt Vertical Fin [PDF]

open access: yesJournal of Applied Fluid Mechanics
Understanding how protrusions, such as fins attached to flat or streamlined bodies, affect aerodynamics, especially in high-speed contexts, is vital for aerospace applications.
D. Sahoo, S. T. Kansara, P. Kumar
doaj   +1 more source

Supersonic Crossflow Transition Control in Ground and Flight Tests [PDF]

open access: yes
This paper describes the use of distributed-roughness-element (DRE) patterns along a Mach 2 design swept-wing leading edge to increase the laminar flow extent and thereby reduce drag. One swept-wing model was tested in a supersonic wind tunnel as well as
Balakumar, Ponnampalam   +5 more
core   +1 more source

Aerodynamic validation of a SCAR design [PDF]

open access: yes
Wind tunnel test of the McDonnell Douglas Supersonic Cruise Aircraft, designed for a cruise Mach number of 2.2, was conducted in the NASA Ames Unitary Plan Wind Tunnels.
Roensch, R. L.
core   +1 more source

Effect of model forebody shape on perforated tunnel wall interference [PDF]

open access: yes
Effect of model forebody shape on perforated supersonic wind tunnel wall ...
Mitchell, G. A.
core   +1 more source

Computational/experimental analysis of three low sonic boom configurations with design modifications [PDF]

open access: yes, 1992
The Euler code, designated AIRPLANE, which uses an unstructured tetrahedral mesh was used to compute near-field sonic boom pressure signatures on three modern low sonic boom configurations: the Mach 2, Mach 3, and Haglund models. The TEAM code which uses
Cliff, Susan E.
core   +1 more source

Study of optical techniques for the Ames unitary wind tunnels. Part 2: Light sheet and vapor screen [PDF]

open access: yes
Light sheet and vapor screen methods have been studied with particular emphasis on those systems that have been used in large transonic and supersonic wind tunnels.
Lee, George
core   +1 more source

Recent tests at Langley with a University of Tennessee Space Institute (UTSI) skin friction balance [PDF]

open access: yes
The experience at LaRC with the University of Tennessee Space Institute skin friction balances is summarized. The Karman-Schoenherr flat plate skin friction formulation is included for comparison.
Lawing, Pierce L.   +2 more
core   +1 more source

A preliminary comparison between the SR-3 propeller noise in flight and in a wind tunnel [PDF]

open access: yes
The noise generated by supersonic-tip-speed propellers is addressed. Models of such propellers were tested for acoustics in the Lewis 8-by-6-foot wind tunnel.
Dittmar, J. H., Lasagna, P. L.
core   +1 more source

Numerical and Experimental Study on Aerodynamic Approximation Methods for Inclined Honeycomb Grid Fins

open access: yesEnergies
Wind tunnel experiment serves as a primary method for characterizing grid fin aerodynamics, yet a fundamental conflict arises between facility size constraints and the structural vulnerability of excessively thinned grid fins from aggressive scaling ...
Longfei Li   +6 more
doaj   +1 more source

CFD modeling of supersonic airflow generated by 2D nozzle with and without an obstacle at the exit section [PDF]

open access: yesFME Transactions, 2015
Computational modeling of complex supersonic airflow patterns is one of the greatest challenges in the domain of CFD analyses. The paper presents initial steps in numerical analysis of such flow, generated by convergentdivergent nozzle with Mach number M
Kostić Olivera   +2 more
doaj  

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