Copy of `EAA - Air travel index`

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EAA - Air travel index Category: Travel and Transportation > Air transport Date & country: 18/11/2013, USA Words: 213

anodize
or anodising, is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. Anodizing increases corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than bare metal. Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light. Anodizing is also used to prevent galling of threaded components and to make dielectric films for electrolytic capacitors. Anodic films are most commonly applied to protect aluminium alloys, although processes also exist for titanium, zinc, magnesium, and niobium.

angle of attack
(AOA) The acute angle at which a moving airfoil meets the airstream.

angle of incidence
(AOI) The angle at which an airfoil is normally fixed in relation to the longitudinal axis of an aircraft.

anhedral
The downward angle of a wing in relation to a horizontal cross-section line; aka CATHEDRAL. See DIHEDRAL.

alclad
Trademark of Alcoa used as a generic term to describe corrosion resistant Aluminum sheet formed from high-purity aluminum surface layers metallurgically bonded to high strength Aluminum Alloy core material. These sheets commonly used by the aircraft industry.

alodine
A non-anodic protective coating. Alodine {aka Iridite, aka Chromate Conversion} is a microscopic thin film commonly prescribed on aluminum to provide an excellent surface prep for paint, aid in corrosion resistance and to impose desired electrical resistance characteristics, (commonly prescribed for radio and amplifier cabinets.) The the process requires an initial acid etching before the AL applying the alodine conversion coating. Alodine is a strong oxidizer and produces a chemical conversion of the surface (oxidizes it). Paint is reported to bond to the alodine'd surface well.

adverse yaw
Yaw generated when the ailerons are used. The lifting wing generates more drag, causing an airplane to yaw (turn) toward it.

agl
Above Ground Level, as a measurement of altitude above a specific land mass, and differentiated from MSL.

aileron
The movable areas of a WINGFORM that control or affect the roll of an aircraft by working opposite one another

airspeed indicator
(ASI) An instrument or device that measures the air speed of an aircraft through an air mass, but not its ground speed.

absolute ceiling
A less often used term

accelerated stall
Any stall made to occur at other than 1g. Also see HIGH-SPEED STALL and SECONDARY STALL

accessories
Mechanical and electrical units mounted on an engine necessary for its operation such as starter, magnetos, fuel pump or the operation of other systems such as an alternator, vacuum pump, etc.