Aerospace Glossary Letters F - G


F

Farad – Unit of capacitance whereby a charge of one coulomb produces a one volt potential difference.
Fatigue Resistance – Resistance to metal crystallization which leads to conductors breaking from flexing.
FEP – Fluorinated Ethylene Propylene is a ""Teflon"" fluorocarbon resin and is a registered T.M. of the DuPont Company. This is a melt extrudable fluorocarbon resin.
Filler – (1) A material used in multiconductor cables to occupy large interstices formed by the assembled conductors. (2) An inert substance added to a compound to improve properties or decrease cost.
Flat Cable – Multiconductor cable arranged in a parallel type configuration manufactured with controlled tolerance spacing.
Flame Resistance – The ability of a material not to propagate flame once the flame source is removed.
Flammability – The measure of the materials ability to support combustion.
Flex Life – The measurement of the ability of a conductor or cable to withstand repeated bending.
Flexibility – That quality of a cable or cable component which allows for bending under the influence of outside force, as opposed to limpness which is bending due to the cables own weight.
Foam Polyethylene – Expanded or "foam" polyethylene consisting of individual closed cells suspended in a polyethylene medium.
Foamed Plastics – Insulations having a cellular structure.
Frequency – Refers to the numbers of cycles per second of an AC signal or an RF signal.
FT1 – Flammability rating established by Canadian Standards Association for a vertical flame test of wire and cable.
FT4 – Flammability rating established by Canadian Standards Association for a vertical flame test of cables in cable trays.
FT6 – Flammability rating established by Canadian Standards Association for horizontal flame and smoke testing of cables.

G

Gauge – A term used to denote the physical size of a wire.
Gigahertz (GHz) – A unit of frequency equal to one billion hertz.
GPIB – Abbreviation for General Purpose Interface Bus Assembly typically used for interconnecting measurement devices.
Ground – The connection between an electrical circuit and the earth or other large conducting body to serve as an earth thus making a complete electrical circuit.