the Aviation Dictionary

kite Kreuger flap
kite - A framework covered with paper, cloth, metal, or
other material, intended to be flown at the end of a rope
or cable, and having as its only support the force of the
wind moving past its surfaces.
Klyston tube - An electron tube in which modulation is
accomplished by varying the velocity of the electrons
flowing through the tube.
knife edge - A sharp-edged piece of steel or other hard
material used as a balance point or fulcrum for
precision balance of a control surface or a propeller.
knife edge fdter - A piece of metal shaped like a
cylinder whose surface is cut with incoming and
outgoing sharp cut grooves. When inserted in an oil
passageway, contaminants remain in the incoming
groove and clean oil squeezes between the knife edge
and the casing and through the outgoing groove to the
oil jet.
knife edge tip - Thin metal rims on a shrouded-tip
turbine blade. These sealing tips establish their own
clearance to the shroud ring by contact loading and
wear.
knife switch - A switch that uses a blade that fits
between two spring-loaded contacts to complete a
circuit. When the blade is rotated out of the slot
between the contacts, the circuit is opened.
knock - A loud knocking or banging noise made inside
a reciprocating engine cylinder during the compression
stroke. The knock is an explosion rather than a smooth
burning process and is caused by the almost
instantaneous release of heat energy from fuel in an
aircraft engine caused by the fuel air mixture reaching
its critical pressure and temperature.
knot - 1. One nautical mile per hour, or 1.1508 statute
miles per hour. 2. A round, hard section of a tree
branch embedded in a board and that weakens the
overall strength of the board.
known traflic - With respect to ATC clearances,
aircraft whose altitude, position and intentions are
known to ATC.
knuckle pin - The hardened steel pin that holds an
articulating rod in the master rod of a radial engine.
knurl - A series of small ridges on the surface of a
material to aid in gripping.
Kollsman window - Registered trade name for the
altimeter setting window of a Kollsman altimeter.
Sometimes erroneously used to describe the altimeter
setting window of any altimeter.
Koroseal - Plastic lacing used for support and antichafing
protection of wires and lines.
Kraft paper - Strong brown paper such as the material
of which grocery sacks are made.
Kreuger flap - A leading edge wing flap hinged at the
bottom side of an airfoil. When it is actuated, the
leading edge bends downward, increasing the overall
wing camber and allowing the wing to develop
additional lift at lower airspeeds.
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