flap

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flap

1. Aviation a movable surface fixed to the trailing edge of an aircraft wing that increases lift during takeoff and drag during landing
2. Surgery a piece of tissue partially connected to the body, either following an amputation or to be used as a graft

flap

[flap]
(aerospace engineering)
Any control surface, such as a speed brake, dive brake, or dive-recovery brake, used primarily to increase the lift or drag on an airplane, or to aid in recovery from a dive.
Any rudder attached to a rocket and acting either in the air or within the jet stream.

flap

flap
i. Auxiliary controls built into the wings and used to increase the camber. Flaps may be on the leading or the trailing edges. Trailing edge flaps reduce the stalling angle, whereas leading edge flaps increase the stalling angle when referred to the chord line of the original nonflapped airfoil. Flaps permit aircraft to fly at a lower speed, permitting better control on takeoff and a lower approach speed for landing. Flaps also increase drag, permitting aircraft to descend at a steeper angle. There are various kinds of flaps, such as splits, fowlers, zaps, and slotted.
ii. Short for cowl flaps. See cowl flap.
iii. The up-and-down movement of the tip of a helicopter rotor blade. See flapping.

FLAP

(1)
A symbolic mathematics package for IBM 360.

["FLAP Programmer's Manual", A.H. Morris Jr., TR-2558 (1971) US Naval Weapons Lab].

[Sammet 1969, p. 506].

flap

(storage, jargon)
To unload a DECtape (so it goes flap, flap, flap). Old-time hackers at MIT tell of the days when the disk was device 0 and microtapes were 1, 2, etc. and attempting to flap device 0 would instead start a motor banging inside a cabinet near the disk.

The term is used, by extension, for unloading any magnetic tape. See also macrotape. Modern cartridge tapes no longer actually flap, but the usage has remained.

The term could well be re-applied to DEC's TK50 cartridge tape drive, a spectacularly misengineered contraption which makes a loud flapping sound, almost like an old reel-type lawnmower, in one of its many tape-eating failure modes.

flap

(networking)

FLAP

The communications protocol used by AOL Instant Messenger (AIM). FLAP runs over TCP/IP and provides the header format for transmitting IM commands and data. It includes the SNAC data type, which is the primary data structure transmitted between clients and servers. See OSCAR.
References in periodicals archive ?
But he needs a special helmet to encase his fragile head, and the bone flap that has been removed needs to be taken in a special container with a constant temperature at -60 degree.
Healthcare workers at the hospital were unable to locate the original bone flap that had been removed during Simmons' January 2007 craniotomy.
Then in February last year, Andrew underwent a cranioplasty, an operation to replace the bone flap on his skull with a metal plate.
Because the patient's ICP remained high, he underwent repeat evacuation of the residual epidural hematoma and marsupialization of the left frontotemporal bone flap.
A rectangular middle fossa bone flap was elevated, and a corner of the flap was used to repair the bone defect on the middle fossa floor.
A sign should be placed above the bed alerting care providers which side of the skull is missing the bone flap and warning that the patient should not be turned onto that side.
With the tumour removed, the surgeon then replaces the membranes, secures the bone flap with fine wire and sews up the scalp incision with catgut, as in diagrams 4 and 5.
From being at death's door, she slowly began to recover and was taken off the life-support machine but suffered a setback when surgeons replaced the bone flap in her skull after three weeks.
Andrew suffered extensive head injuries and lost consciousness, having to undergo surgery to remove a bone flap from the top of his head, allowing his brain to swell naturally.
Researchers from several hospitals in Virginia set out to study whether titanium bone flap fixation after cranial surgery was effective and warranted the greater cost of titanium fixation devices.