buzz


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buzz

[bəz]
(aerospace engineering)
Sustained oscillation of an aerodynamic control surface caused by intermittent flow separation on the surface, or by a motion of shock waves across the surface, or by a combination of flow separation and shock-wave motion on the surface.
(control systems)
(electronics)
The condition of a combinatorial circuit with feedback that has undergone a transition, caused by the inputs, from an unstable state to a new state that is also unstable.
(fluid mechanics)
In supersonic diffuser aerodynamics, a nonsteady shock motion and airflow associated with the shock system ahead of the inlet.

buzz

i. An airflow instability that occurs when a shock wave is alternately swallowed and regurgitated by the inlet. At its worst, the condition can cause violent fluctuation in pressure throughout the inlet, which may result in damage to the inlet structure and maybe to the engine itself. Also called intake buzz.
ii. To harass another aircraft in flight or ground objects by flying dangerously close to them.
iii. The oscillation of control surface or other structure at very high audible frequencies. The commonest such phenomenon is aileron buzz. This sustained oscillation of control surfaces caused by intermittent flow separation on the surface, by a motion of shock waves across the surface, or by a combination of flow separation and shock-wave motion on the surface may result in damaging or even breaking of ailerons.

buzz

(1)
Of a program, to run with no indication of progress and perhaps without guarantee of ever finishing; especially said of programs thought to be executing a tight loop of code. A program that is buzzing appears to be catatonic, but never gets out of catatonia, while a buzzing loop may eventually end of its own accord. "The program buzzes for about 10 seconds trying to sort all the names into order." See spin; see also grovel.

buzz

(2)
[ETA Systems] To test a wire or printed circuit trace for continuity by applying an AC rather than DC signal. Some wire faults will pass DC tests but fail a buzz test.

buzz

(3)
To process an array or list in sequence, doing the same thing to each element. "This loop buzzes through the tz array looking for a terminator type."

buzz

The latest gossip or rumor. See buzzword, Google Buzz and BuzzFeed.
References in classic literature ?
He had no opportunity of saying, or so much as thinking, anything else, until he was clear of the Old Bailey; for, the crowd came pouring out with a vehemence that nearly took him off his legs, and a loud buzz swept into the street as if the baffled blue-flies were dispersing in search of other carrion.
The parties were fast advancing to that happy state which would have insured ample cause for the next day's repentance; and the bees were already beginning to buzz about their ears, when a messenger came spurring to the camp with intelligence that Wyeth's people had got entangled in one of those deep and frightful ravines, piled with immense fragments of volcanic rock, which gash the whole country about the head-waters of the Blackfoot River.
As the rumor that a "three-figure" pocket- handkerchief was to be at the ball, had preceded my appearance, a general buzz announced my arrival in the salle a manger-salons.
As countless swarms of flies buzz around a herdsman's homestead in the time of spring when the pails are drenched with milk, even so did the Achaeans swarm on to the plain to charge the Trojans and destroy them.
The whole town was in a buzz with the story of the money diggers.
They sting, buzz, and torment, from one end of the year to the other, and by incessantly exasperating the natives materially obstruct the benevolent labours of the missionaries.
Thus much was settled before Edmund, who had been out all the morning, knew anything of the matter; but when he entered the drawing-room before dinner, the buzz of discussion was high between Tom, Maria, and Mr.
At these words, which produced the effect of a peal of thunder, prevailing over the orchestra, the singing and the buzz of the promenaders, the cardinal and the queen-mother looked at each other with surprise.
There was a drowsy buzz of small life in hot sunshine, a cooing of doves, and a sleepy drone of well-wheels across the fields.
Don't you know what it is to feel a buzz, buzz, buzzing inside?
The twitter of birds, the buzz of insects, the far-off echo of voices, the lowing of cattle, the distant barking of dogs, roar of trains, and rattle of carts--all these form one low, unremitting note, striking unheeded upon the ear.
A buzz of excitement went up from the knot of squires as Alleyne, his gentle nature turned by this causeless attack into fiery resolution, dashed his glove with all his strength into the sneering face of his antagonist.