Results 121 to 130 of about 16,885 (229)

Shear force and torsion in reinforced concrete beam elements: theoretical analysis based on Brazilian Standard Code ABNT NBR 6118:2007

open access: yesRevista IBRACON de Estruturas e Materiais
Reinforced concrete beam elements are submitted to applicable loads along their life cycle that cause shear and torsion. These elements may be subject to only shear, pure torsion or both, torsion and shear combined.
R. Barros, J.S. Giongo
doaj   +1 more source

NASA/Pratt and Whitney experimental clean combustor program: Engine test results [PDF]

open access: yes, 1977
A two-stage vorbix (vortex burning and mixing) combustor and associated fuel system components were successfully tested in an experimental JT9D engine at steady-state and transient operating conditions, using ASTM Jet-A fuel. Full-scale JT9D experimental
Fiorentino, A. J.   +2 more
core   +1 more source

Application of advanced technologies to small, short-haul aircraft [PDF]

open access: yes
The results of a preliminary design study which investigates the use of selected advanced technologies to achieve low cost design for small (50-passenger), short haul (50 to 1000 mile) transports are reported.
Andrews, D. G.   +9 more
core   +1 more source

Randomness in topological models

open access: yes, 2010
p. 914-925There are two aspects of randomness in topological models. In the first one, topological idealization of random patterns found in the Nature can be regarded as planar representations of three-dimensional lattices and thus reconstructed in the
BOBER, Waldemar, TARCZEWSKI, Romuald
core  

Full scale visualization of the wing tip vortices generated by a typical agricultural aircraft [PDF]

open access: yes
The trajectories of the wing tip vortices of a typical agricultural aircraft were experimentally determined by flight test. A flow visualization method, similar to the vapor screen method used in wind tunnels, was used to obtain trajectory data for a ...
Bridges, P. D.   +3 more
core   +1 more source

An inventory of aeronautical ground research facilities. Volume 1: Wind tunnels [PDF]

open access: yes
A survey of wind tunnel research facilities in the United States is presented. The inventory includes all subsonic, transonic, and hypersonic wind tunnels operated by governmental and private organizations.
Brown, K. R.   +3 more
core   +1 more source

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