Results 311 to 320 of about 157,884 (362)

Aerodynamic characteristics of trills

The Journal of the Acoustical Society of America, 1998
What are the aerodynamic conditions required for trills? To find out we had two subjects produce steady-state voiced, voiceless, and ejective alveolar trills. The backpressure during trills was intermittently bled with a tube of varying diameter (and thus impedance) inserted in the speaker’s mouth via the buccal sulcus and gap behind the back molars ...
Maria-Josep Sole, John J. Ohala, S. Goangshiuan Ying   +2 more
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The Aerodynamic Characteristics of a Microbus

Advanced Materials Research, 2011
This work is focused on the reduction of the aerodynamic resistance of a microbus. The approach is the three dimensional (3-D) numerical simulation. The RNG k–ε turbulence models are adopted in the computation. Based on the model of SC6350 Chang’an microbus and the improved rear shape, the aerodynamic characteristics of both models at different speeds ...
Xiao Ni Qi, Jian Meng, Yong Qi Liu
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Acoustic and Aerodynamic Characteristics of Choral Singers

Journal of Voice, 2019
The study aimed to investigate and compare the acoustic and aerodynamic characteristics of choral singers and nonsingers.Twenty choral singers and 20 nonsingers in the age range of 20-30 years with no vocal pathology participated in the study. For acoustic analysis, the voice sample was recorded and analyzed using Praat software (Phonetic Sciences ...
Sunil Kumar Ravi, Srushti Shabnam, Krupa Saira George, T. Saraswathi   +3 more
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Aerodynamic characteristic of a canard guided rocket

International Journal of Modeling, Simulation, and Scientific Computing, 2017
The computational fluid dynamics (CFD) numerical simulation was used to investigate the aerodynamic characteristic of a canard guided rocket based on the technology of high quality point-to-point multi-block structured grid. The results of numerical simulation and experiments showed that the method is highly credible, and the method could be used to ...
Yong-chao Chen, Xin-bao Gao, Min Gao, Hui-Miao Lv   +3 more
openaire   +1 more source

Aerodynamic Characteristics of the Wings and Body of a Dragonfly

Journal of Experimental Biology, 1996
ABSTRACT The aerodynamic characteristics of the wings and body of a dragonfly and of artificial wing models were studied by conducting two types of wind-tunnel tests and a number of free-flight tests of gliders made using dragonfly wings. The results were consistent between these different tests.
, Okamoto, , Yasuda, , Azuma
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Aerodynamic Characteristics of Tracheostomy Speaking Valves

Journal of Speech, Language, and Hearing Research, 1993
Pressure-flow characteristics were determined for four different one-way valves used for speech production in the patient who has had a tracheotomy. Each valve was tested at steady-state flow rates of 150, 250, 350, and 450 ml/sec in isolation and attached to a tracheostomy tube. Results indicated significant differences in resistance among the valves.
L, Fornataro-Clerici, D J, Zajac
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Aerodynamic characteristics of biplanes with winglets

Journal of Aircraft, 1987
This paper examines, both theoretically and experimentally, the possibility of improving the aerodynamic characteristics of a biplane configuration by adding winglets. Theoretical calculations show good agreement with experiment in predicting inviscid drag due to lift.
Peter D. Gall, Hubert C. Smith
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Aerodynamic Characteristics of Rectangular Cylinders

International Journal of Computational Fluid Dynamics, 1999
Three and two-dimensional simulations of unsteady flows around a rectangular cylinder sectioned object are carried out by means of the IBTD + FS Finite Element technique without the use of a turbulence model. The three-dimensional simulations confirmed that the aerodynamic characteristics of a rectangular object with a side ratio of breadth/ depth (B/D)
H. HIRANO, S. WATANABE, A. MARUOKA, M. IKENOUCHI   +3 more
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Aerodynamic characteristics of trills and phonological patterning

Journal of Phonetics, 2002
Abstract The present study attempts to characterize the aerodynamic conditions required for the production of apical trills and to account for some universal tendencies in the patterning of trills in terms of their aerodynamic and distinctiveness requirements.
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Determination of Elastic Wing Aerodynamic Characteristics

Journal of the Aeronautical Sciences, 1952
The basic aeroelastic integral equation is formulated by treating the wing as a tapered cantilever beam mounted normal to its straight elastic axis. By means of an iterative process, a series solution is obtained for the aeroelastic change in angle-of-attack distribution. For sweptback wings, this Neumann solution fails to converge at dynamic pressures
Gaugh, William J., Slap, Joseph K.
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