A study of methods to predict and measure the transmission of sound through the walls of light aircraft. A survey of techniques for visualization of noise fields [PDF]
A survey of the most widely used methods for visualizing acoustic phenomena is presented. Emphasis is placed on acoustic processes in the audible frequencies. Many visual problems are analyzed on computer graphic systems.
Bernhard, R., Marshall, S. E.
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CDC42‐Effector Proteins Regulate Higher Order Structure of Septins Required for CNS Myelin Integrity
Glia, Volume 74, Issue 3, March 2026.CDC42‐effector proteins 1/2 are present in CNS myelin. They facilitate the higher order structure of myelin septin filaments. Their loss impairs septin‐dependent scaffolding of myelin. Myelin outfoldings do not cause secondary neuropathology per se. ABSTRACT The regular structure of CNS myelin requires specialized structural proteins, including septin ...
Sophie Hümmert +14 more
wiley +1 more source
Flow visualization in the Langley 0.3-meter Transonic Cryogenic Tunnel and preliminary plans for the National Transonic Facility [PDF]
Design problems associated with the integration of flow visualization in cryogenic facilities are discussed. The possible effects from the cryogenic environment (i.e., window distortion due to thermal contraction both in the mounts and in the window ...
Jones, S. B., Rhodes, D. B.
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Schlieren imaging : visualization of airflow in speech
, 2015 Schlieren imaging is a non-invasive research tool that enables real-time visualization of airflow through refraction of light. Used predominantly in aerospace and ballistics research, its suitability for observing airflow in speech was proposed nearly 40 years ago. To date, this potential has been virtually unexplored.
openaire +1 more source
Space Launch System Booster Separation Supersonic Powered Testing with Surface and Off-Body Measurements [PDF]
A wind tunnel test was run in the NASA Langley Unitary Plan Wind Tunnel simulating the separation of the two solid rocket boosters (SRB) from the core stage of the NASA Space Launch System (SLS). The test was run on a 0.9% scale model of the SLS Block 1B
Danehy, Paul M. +7 more
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Visualization and comparison of methane and hydrogen jet dynamics using schlieren imaging
, 2022 Maryam Yeganeh +6 more
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Nihon Kikai Gakkai ronbunshu, 2019 The underexpanded sonic jet issued from an axisymmetric convergent nozzle are experimentally investigated in which the nozzle is operated at a pressure ratio of 4.0 to produce a Mach disk in the jet plume.
Taishi TAKESHITA +3 more
doaj +1 more source
Experimental Identification of a New Secondary Wave Pattern in Transonic Cascades with Porous Walls
AerospaceTurbomachinery shock wave patterns occur as a natural result of operating at off-design points and are accountable for some of the loss in performance. In some cases, shock wave–boundary layer (SW-BLIs) interactions may even lead to map restrictions. The
Valeriu Drăgan +4 more
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Experimental Measurement Benchmark for Compressible Fluidic Unsteady Jet
Actuators, 2018 A benchmark of different measurement techniques is presented to characterize the dynamic response of a synthetic jet actuator working in compressible regime. The setup involves a piston-based synthetic jet, as well as the benchmarked measurements are hot-
Pablo Fernandez +4 more
doaj +1 more source
Shock wave boundary layer interaction studied by high-speed schlieren [PDF]
, 2018 Shock wave boundary layer interactions at compression ramps have been examined by high-speed schlieren. A total of six ramps with angles ranging from 20 deg to 30 deg, the ramp angle effect on the SWBLI is thus studied.
Gan, T., Sun, Z., Wu, Y.
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