Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparative Measurements in Four European Wind Tunnels of Unsteady Pressure on an Oscillating Model
A program of oscillatory pressure measurements was repeated in four wind tunnels. The influence of tunnel wall interference on flutter and other unsteady tests in transonic wind tunnels was determined. The tunnels differed in the size of their working sections; cross sectional areas ranged from 0.6 to 3.2 m squared. The means of wall ventilation also varied. In each tunnel, small amplitude harmonic oscillations were applied to the same rigid half-model of a low aspect ratio lifting surface. Chordwise distributions of the fundamental components of the oscillatory pressures were measured. Measurements were made of the steady pressure distributions for the mean position about which the oscillations occured. Measurements were also made of the oscillatory pressures at a wall of each tunnel. Two of the tunnels were large compared to the model. Results were in general agreement, suggesting that no serious interference effects occurred.
Comparative Measurements in Four European Wind Tunnels of Unsteady Pressure on an Oscillating Model
A program of oscillatory pressure measurements was repeated in four wind tunnels. The influence of tunnel wall interference on flutter and other unsteady tests in transonic wind tunnels was determined. The tunnels differed in the size of their working sections; cross sectional areas ranged from 0.6 to 3.2 m squared. The means of wall ventilation also varied. In each tunnel, small amplitude harmonic oscillations were applied to the same rigid half-model of a low aspect ratio lifting surface. Chordwise distributions of the fundamental components of the oscillatory pressures were measured. Measurements were made of the steady pressure distributions for the mean position about which the oscillations occured. Measurements were also made of the oscillatory pressures at a wall of each tunnel. Two of the tunnels were large compared to the model. Results were in general agreement, suggesting that no serious interference effects occurred.
Comparative Measurements in Four European Wind Tunnels of Unsteady Pressure on an Oscillating Model
K. Kienappel (Autor:in) / N. C. Lambourne (Autor:in) / R. Destuynder (Autor:in) / R. Roos (Autor:in)
1980
130 pages
Report
Keine Angabe
Englisch
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