Dead Center

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Related to dead centre: Top dead centre

dead center

[¦ded ′sen·tər]
(mechanical engineering)
A position of a crank in which the turning force applied to it by the connecting rod is zero; occurs when the crank and rod are in a straight line.
A support for the work on a lathe which does not turn with the work.

Dead Center

 

the extreme position of a piston in the cylinder of a piston engine, at which the motion of the piston changes direction. The piston position at the greatest distance from the crank is known as top dead center, and the position closest to the crank is known as bottom dead center. When the piston is at dead center, its velocity is zero, and the forces acting upon it do not generate an impulse (momentum) for displacement of the crank. In theoretical mechanics the positions of the piston at dead center are sometimes called limit positions (points).

References in periodicals archive ?
It is because if you sit dead centre only a complete idiot would attempt to go past you to claim a seat.
Port Authority Police officer Will Jimeno and Sgt John McLoughlin were virtually dead centre in the 16acre complex when the first building collapsed, burying them in debris.
Your piece of wire will have stopped as soon as it hit the edge of the stud, so add another inch and you should be dead centre.
Rod For Top Dead Centre Checking Mt01gm0183 1 No 15 .
I applied the emergency brake but the train hit him just to the right of dead centre.
The 26-year-old had the line and length almost perfect as his putt shaved the hole ending dead centre six inches past.
Former private investigator Robin Bowles staged a personal re-enactment of the attack for her book, Dead Centre.
Tenders are invited for Carbide Tipped Dead Centre As Per Drg.
PC Hope added: "As it reached the point where the single carriageway splits into two, the window in the front door on the nearside of the car was hit almost dead centre and shattered.
And now in New Street Law he is at the, er, dead centre of yet another cover-up.
As time progressed and with it came accuracy the feeling of achievement when hitting dead centre for the pellet would make a bell ring.
Rec were back on level terms 15 minutes later after Nicky Sharpies was fouled 20 yards out, dead centre of the Iveagh goal.