Add to ORKGAn acoustic muffler design of a research tool for studying laminar flow and the mechanisms of transition, the Laminar Flow and Transition Research Apparatus (LFTRA) is investigated. Since the presence of acoustic pressure fluctuations is known to affect transition, low background noise levels in the test section of the LFTRA are mandatory. The difficulties and tradeoffs of various muffler design concepts are discussed and the most promising candidates are emphasized
The acoustically significant features of the NASA 4X7m wind tunnel and the Dutch-German DNW low spee...
An experimental investigation to determine the possibility of using refracting flows for the suppres...
Measurements were made in the no. 1 7'x10' wind tunnel at NASA Ames Research Center, with the object...
General procedures for the prediction of component noise levels incident upon airframe surfaces duri...
The study deals mainly with engineering problems associated with the introduction of a noise genera...
An experiment was conducted to determine the effect of acoustics on the laminar flow on the side of ...
The natural laminar flow (NLF) nacelle experiment is part of a drag reduction production program, an...
The NASA LaRC 4 x 7 Meter Wind Tunnel is an existing facility specially designed for powered low spe...
The measurement of wind tunnel background pressure fluctuations in a Ludwig Tube is discussed. The m...
Since the mid 1970's, NASA, industry, and universities have worked together to conduct important res...
A two-dimensional laminar flow airfoil (NLF-0414) was subjected to high-intensity sound (pure tones ...
The NASA-Langley Research Center 4 x 7 Meter Low Speed Wind Tunnel is currently being used for low s...
Testing of air breathing propulsion systems in the 9x15 foot wind tunnel at NASA Glenn Research Cent...
Nacelle design for turbofan engine compressor noise suppression on Douglas DC-8 aircraf
Attenuation characteristics of four different resonator mufflers were determined in both cold tests ...
The acoustically significant features of the NASA 4X7m wind tunnel and the Dutch-German DNW low spee...
An experimental investigation to determine the possibility of using refracting flows for the suppres...
Measurements were made in the no. 1 7'x10' wind tunnel at NASA Ames Research Center, with the object...
General procedures for the prediction of component noise levels incident upon airframe surfaces duri...
The study deals mainly with engineering problems associated with the introduction of a noise genera...
An experiment was conducted to determine the effect of acoustics on the laminar flow on the side of ...
The natural laminar flow (NLF) nacelle experiment is part of a drag reduction production program, an...
The NASA LaRC 4 x 7 Meter Wind Tunnel is an existing facility specially designed for powered low spe...
The measurement of wind tunnel background pressure fluctuations in a Ludwig Tube is discussed. The m...
Since the mid 1970's, NASA, industry, and universities have worked together to conduct important res...
A two-dimensional laminar flow airfoil (NLF-0414) was subjected to high-intensity sound (pure tones ...
The NASA-Langley Research Center 4 x 7 Meter Low Speed Wind Tunnel is currently being used for low s...
Testing of air breathing propulsion systems in the 9x15 foot wind tunnel at NASA Glenn Research Cent...
Nacelle design for turbofan engine compressor noise suppression on Douglas DC-8 aircraf
Attenuation characteristics of four different resonator mufflers were determined in both cold tests ...
The acoustically significant features of the NASA 4X7m wind tunnel and the Dutch-German DNW low spee...
An experimental investigation to determine the possibility of using refracting flows for the suppres...
Measurements were made in the no. 1 7'x10' wind tunnel at NASA Ames Research Center, with the object...