Sentences with phrase «of jet noise»

«The sublime challenge of jet noise.»

«His project leverages computational data with what he calls input - output analysis, which reveals the origins of jet noise that are otherwise hidden in direct run - of - the - mill forward simulations, or even experiments.»

«By combining our work, we were able to gain deeper understanding of jet noise than either of us could do separately,» Nelson said.

«The science of jet noise is very well understood,» says Matoza.

Not exact matches

It won a $ 750,000 contract from NAVAIR, the aviation division of the Navy, to reduce jet engine noise, Kelly says.

Deluce likes to call the CS100 a «whisper - jet,» though it would be more accurate to say that it's a «mimic - jet» — one whose noise profile and fuel consumption look more like those of a turboprop.

It goes through the plausibility of each scenario that would lead to this much Jets - Mayfield noise.

In 1977 a study named Arlington Heights one of the most graft - free communities in the country, and the village has been at the forefront of the movement to limit jet noise from O`Hare.

A soaring piece of rhetoric, as the deafening noise of the jet engines roar over the meadow, but also an unfortunate piece of rhetoric.

A series of earthshaking noises that left some residents on the East Coast wondering if they had lived through an earthquake yesterday afternoon were sonic booms caused by the testing of a fighter jet, officials said.

Since the decibel scale is logarithmic, growing exponentially, that means a jet sounds twice as loud as a train when the noise levels of both vehicles are objectively the same.

The noise crescendoes, like a jet taking off, and metallic hammering accompanies the sinister smoke rising out of the drill hole.

The virtual jet relies on several tricks to reshape the shock waves and reduce the intensity of the boom: a needle nose, narrow fuselage, swept - back wings, aerodynamic engine coverings placed above the wings to shield engine noise, and a widely spaced V - shaped tail.

«You don't pick up anything in terms of ambient noise,» says study coauthor John Rogers, a materials scientist and bioengineer at Northwestern University in Evanston, Ill. «You can be next to an airplane jet engine.

Up close, the noise of a ship to a whale would be like standing next to a jet engine, or almost in it.

Jet engines produce noise in different ways, but mainly it comes from the high - speed exhaust stream that leaves the nozzle at the rear of the engine.

But while they're good at predicting supersonic sound sources, they have a hard time predicting all the components of subsonic jet noise, especially in the sideline direction, or perpendicular to the exhaust stream.

The team turned to Mira to conduct a high - fidelity simulation of an impinging jet without any modifications, and then measured the noise it produced.

Nichols is working with the Argonne Leadership Computing Facility (ALCF), a U.S. Department of Energy (DOE) Office of Science User Facility within the DOE's Argonne National Laboratory, to create high - fidelity computer simulations to determine how jet turbulence produces noise.

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AD 129 — c. 216) galena GALEX (Galaxy Evolution Explorer) Galilean satellites Galilean telescope Galileo (Galilei, Galileo)(1564 — 1642) Galileo (spacecraft) Galileo Europa Mission (GEM) Galileo satellite navigation system gall gall bladder Galle, Johann Gottfried (1812 — 1910) gallic acid gallium gallon gallstone Galois, Évariste (1811 — 1832) Galois theory Galton, Francis (1822 — 1911) Galvani, Luigi (1737 — 1798) galvanizing galvanometer game game theory GAMES AND PUZZLES gamete gametophyte Gamma (Soviet orbiting telescope) Gamma Cassiopeiae Gamma Cassiopeiae star gamma function gamma globulin gamma rays Gamma Velorum gamma - ray burst gamma - ray satellites Gamow, George (1904 — 1968) ganglion gangrene Ganswindt, Hermann (1856 — 1934) Ganymede «garbage theory», of the origin of life Gardner, Martin (1914 — 2010) Garneau, Marc (1949 ---RRB- garnet Garnet Star (Mu Cephei) Garnet Star Nebula (IC 1396) garnierite Garriott, Owen K. (1930 ---RRB- Garuda gas gas chromatography gas constant gas giant gas laws gas - bounded nebula gaseous nebula gaseous propellant gaseous - propellant rocket engine gasoline Gaspra (minor planet 951) Gassendi, Pierre (1592 — 1655) gastric juice gastrin gastrocnemius gastroenteritis gastrointestinal tract gastropod gastrulation Gatewood, George D. 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(1936 ---RRB- Gilbert, William (1544 — 1603) gilbert (unit) Gilbreath's conjecture gilding gill gill (unit) Gilruth, Robert R. (1913 — 2000) gilsonite gimbal Ginga ginkgo Giotto (ESA Halley probe) GIRD (Gruppa Isutcheniya Reaktivnovo Dvisheniya) girder glacial drift glacial groove glacier gland Glaser, Donald Arthur (1926 — 2013) Glashow, Sheldon (1932 ---RRB- glass GLAST (Gamma - ray Large Area Space Telescope) Glauber, Johann Rudolf (1607 — 1670) glaucoma glauconite Glenn, John Herschel, Jr. (1921 ---RRB- Glenn Research Center Glennan, T (homas) Keith (1905 — 1995) glenoid cavity glia glial cell glider Gliese 229B Gliese 581 Gliese 67 (HD 10307, HIP 7918) Gliese 710 (HD 168442, HIP 89825) Gliese 86 Gliese 876 Gliese Catalogue glioma glissette glitch Global Astrometric Interferometer for Astrophysics (GAIA) Global Oscillation Network Group (GONG) Globalstar globe Globigerina globular cluster globular proteins globule globulin globus pallidus GLOMR (Global Low Orbiting Message Relay) GLONASS (Global Navigation Satellite System) glossopharyngeal nerve Gloster E. 28/39 glottis glow - worm glucagon glucocorticoid glucose glucoside gluon Glushko, Valentin Petrovitch (1908 — 1989) glutamic acid glutamine gluten gluteus maximus glycerol glycine glycogen glycol glycolysis glycoprotein glycosidic bond glycosuria glyoxysome GMS (Geosynchronous Meteorological Satellite) GMT (Greenwich Mean Time) Gnathostomata gneiss Go Go, No - go goblet cell GOCE (Gravity field and steady - state Ocean Circulation Explorer) God Goddard, Robert Hutchings (1882 — 1945) Goddard Institute for Space Studies Goddard Space Flight Center Gödel, Kurt (1906 — 1978) Gödel universe Godwin, Francis (1562 — 1633) GOES (Geostationary Operational Environmental Satellite) goethite goiter gold Gold, Thomas (1920 — 2004) Goldbach conjecture golden ratio (phi) Goldin, Daniel Saul (1940 ---RRB- gold - leaf electroscope Goldstone Tracking Facility Golgi, Camillo (1844 — 1926) Golgi apparatus Golomb, Solomon W. 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Josef M. Miller MD, professor in the Department of Otolaryngology at the University of Michigan Medical School, along with Colleen G. Le Prell, and Larry F. Hughes treated guinea pigs with one of the following: vitamins A, C and E; magnesium; A, C and E plus magnesium, or a placebo one hour before and five days after a five - hour exposure to 120 decibel sound pressure level noise (comparable to a jet engine at take - off).

Walking onto the jet way with the little bundle of noise were the parents and 2 more young children.

Jetting down the expressway, there's very little road and wind noise to speak of, and during hard acceleration, mechanical ruckus isn't as apparent.

Land Rover's techs believe the noise was a result of over-zealous cleaning of the air - springs (over the four - week period of the press launch, the cars» undersides were jet - washed twice a day) causing the rubber air bladders to lose their lubrication and rub on the damper canisters.

With soundproof rooms to keep the noise out, giant beds that lull you to sleep, and a great live airshow in case of jet lag.

Not to be outdone, the European Research Commission has launched another initiative, called Clean Sky, that aims for even bigger goals - cutting noise of jets by half and CO2 and NOx emissions by 50 and 80 percent respectively by 2020.

As you can probably guess, this unit will be able to handle most of what you would throw at it and do so without raging in a fit by blowing its fans and making noises that sound similar to jet engines.

These noise - cancelling headphones are designed to give their owner sound that's free of external interference from jet engines, trains or other sorts... Read more

Not having the good fortune of having a flight to test them out on, we resorted to more pedestrian forms of transportation (trains and car rides), crowded locales and simulated test environments (a jet - engine noise played over our home speaker system) to test these out.

They won't be as effective at drowning out the roar of a jet engine as active noise cancelling headphones, but the sound isolation is very good for an on - ear pair of cans.

I'm admittedly not breaking out my statistical z - score formulas right now as it's now 6:00 am and I've been up for 2 hours as I'm fighting jet lag having just come home from Thanksgiving in Philadelphia, but that increase of 11 sales, while encouraging, doesn't seem to be too much beyond statistical noise (random fluctuations).