the Aviation Dictionary

G
G gas generator
20. Yellow brass
2 1. Admiralty brass
22. Aluminum bronze
gain - The increase in signal power through a circuit. 23. Red brass
galling - Fretting or chafing of a mating surface by 24.
sliding contact with another surface or body. The heat 25 Silicon bronze
friction causes the material from one surface to be 26 70-30 cu~ro-nickel
welded or deposited onto the other surface, ultimately 27 G-Bronze
damaging the surface area.
28. M-Bronze
29. Silver solder
gallon - 1. Imperial: A unit of liquid measurement used 30. Nickel (passive)
outside of the United States. One Imperial gallon is 31, 75~1-16~~-7~~ alloy (passive)
equal to 277.4 cu. in., 4.55 liters, or 1.201 U.S. gallons. 32. 7NI-33Cu alloy
2. U.S.: A unit of liquid measurement used in the 33. 13 percent chromium steel, me 410
United States. One U.S. gallon is equal to 231 cu. in., (passive)
128 fl. oz., or 3.785 liters. 34. Titanium
galvanic action - Electron flow because of a difference 35 18-8 Stainless type 304 (passive)
of electrode potential between different substances. 36. 18-8-3 Stainless steel, type 316 (passive)
37. Silver
galvanic corrosion - Corrosion due to the presence of 38. Graphite
dissimilar metals in contact with each other in the 39. ~ ~ l d
presence of an electrolyte such as water.
40. Platinum
galvanic couple - Dissimilar metals that produce an
electrical voltage when they are both in contact with galvanizing - A protecting parts from
the same electrolyte. When dissimilar metals are in this corrosion by dipping them in a vat of molten zinc or by
condition, one metal forms the anode and the other electroplating them. The protection actually comes
metal forms the cathode, thereby producing a current fiom sacrificial corrosion of the zinc.
between the two metals.
galvanometer - An electrical measuring instrument in
galvanic electricity - The electricity produced by which electrical current is measured by the reaction of
chemical action such as that produced in a dry-cell its electromagnetic field to the field of a permanent
battery or storage battery.
magnet.
galvanic grouping - An of metals in a gamma rays - Electromagnetic radiation that results
series according to their electrode potential difference. from nuclear fission.
galvanic metal electrical series - The hierarchical ganged tuning - A mechanical arrangement that permits
arrangement of metals in order of their chemical
the simultaneous tuning of two or more electronic
activity. The following list of metals indicates their circuits.
hierarchical chemical activity, and acts as the anode in gap - The distance between two objects.
any electrolytic action to those that follow:
1. Magnesium garnet paper - An abrasive polishing paper consisting
2. Zinc of a sheet of flexible paper with a layer of finely
3. Galvanized steel crushed garnet.
4. Aluminum 6053 gas - 1. A fluid that assumes the shape of the container
5. Alcad it is placed in and fills the container. 2. The physical
6. Cadmium condition of matter in which a material takes the shape
7. Aluminum 2024 of its container and expands to fill the entire container.
8. Mild steel Oxygen and nitrogen are two chemical elements that
9. Cast iron are gases at normal room temperature and pressure.
10. 13 percent chromium stainless steel, type 410 (active) The air we breathe is a physical mixture of gases,
11. 18-8 Stainless steel, type 304 (active) primarily nitrogen and oxygen.
12. 18-8-3 Stainless steel, type 316 (active)
13. Lead gas generator - The basic power producing portion of a
14. Tin gas turbine engine excluding sections such as the inlet
15. Muntz metal duct, the fan section, free power turbines, and the
16. Manganese bronze tailpipe. Each manufacturer designates what is included
17. Naval brass in the gas generator, but generally it consists of the
18. Nickel (active) compressor, diffuser, combustor, and turbine.
19. 76NI-16Cr-7Fe alloy (active)
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