Results 71 to 80 of about 56,125 (155)

Determination of density and concentration from fluorescent images of a gas flow

open access: yes, 2007
A fluorescent image analysis procedure to determine the distribution of species concentration and density in a gas flow is proposed. The fluorescent emission is due to the excitation of atoms/molecules of a gas that is intercepted by an electron blade ...
AK Agrawal   +15 more
core   +1 more source

Design of a Schlieren system for low enthalpy hypersonic flow visualization in GHIBLI facility and development of image processing and quantitative analysis codes with preliminary application to sonic free jet [PDF]

open access: yes, 2015
GHIBLI is a 2 MW arc-jet hypersonic facility located at CIRA premises in Capua (Italy), designed for testing candidate TPS materials for re-entry vehicles. Measured data during cold flow tests, i.e.
Carletta, Stefano   +4 more
core  

AFFTC overview of orbiter-reentry flight-test results [PDF]

open access: yes, 1983
The Air Force Flight Test Center (AFFTC) has been participating in the flight testing of the Space Shuttle since 1976. An independent assessment of the reentry and landing capabilities of the Orbiter was conducted with respect to Department of Defense ...
Hoey, R. G.
core   +1 more source

HASA: Hypersonic Aerospace Sizing Analysis for the Preliminary Design of Aerospace Vehicles [PDF]

open access: yes
A review of the hypersonic literature indicated that a general weight and sizing analysis was not available for hypersonic orbital, transport, and fighter vehicles.
Berkowitz, Brian M., Harloff, Gary J.
core   +1 more source

Aerodynamic Characteristics at a Mach Number of 6.8 of Two Hypersonic Missile Configurations, One with Low-Aspect-Ratio Cruciform Fins and Trailing-Edge Flaps and One with a Flared Afterbody and All-Movable Controls [PDF]

open access: yes, 1958
An investigation has been made to determine the aerodynamic characteristics in pitch at a Mach number of 6.8 of hypersonic missile configurations with cruciform trailing-edge flaps and with all-movable control surfaces.
Bernot, P. T., Robinson, R. B.
core   +2 more sources

Experimental investigation of hypersonic buzz on a high cross-range shuttle configuration [PDF]

open access: yes
A wind tunnel investigation has been conducted to determine the nature of an unsteady hypersonic flow phenomenon, often referred to as hypersonic buzz, on a 1:100 scale model representative of a high cross-range shuttle configuration.
Goldman, R. L., Obremski, H. J.
core   +1 more source

Hypersonic limit for steady compressible Euler flows passing straight cones [PDF]

open access: yesarXiv
We investigate the hypersonic limit for steady, uniform, and compressible polytropic gas passing a symmetric straight cone. By considering Radon measure solutions, we show that as the Mach number of the upstream flow tends to infinity, the measures associated with the weak entropy solution containing an attached shock ahead of the cone converge vaguely
arxiv  

Convergence Rate of the Hypersonic Similarity for Two-Dimensional Steady Potential Flows with Large Data [PDF]

open access: yesarXiv
We establish the optimal convergence rate of the hypersonic similarity for two-dimensional steady potential flows with {\it large data} past over a straight wedge in the $BV\cap L^1$ framework, provided that the total variation of the large data multiplied by $\gamma-1+\frac{a_{\infty}^2}{M_\infty^2}$ is uniformly bounded with respect to the adiabatic ...
arxiv  

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