Common Aircraft Electrical Material Parts

End item NSN parts page 1 of 2
Part Number
NSN
NIIN
100914 Direct Current Motor
006356418
102650P100 Direct Current Motor
000682051
112705 Direct Current Motor
010065277
11789-0001 Display Handle
004890661
117SCE153-1 Prop Feather Switch
007176554
1543-7 Landing Gear Audible Alarm
000526363
1543-9 Landing Gear Audible Alarm
000526363
2009 Landing Gear Audible Alarm
000526363
2009S Landing Gear Audible Alarm
000526363
20490 Dynamotor
005426363
20490-28V Dynamotor
005426363
230006 Aircraf Controller Grip Assembly
006004553
25281 Motor-generator
001851066
25TP17 Alternating Current Motor
009035064
2BA40S55 Direct Current Motor
010065277
32B172-1A Motor-generator
011508934
32B50-12A Motor-generator
008659683
32B56-9B Motor-generator
001774611
3634-2000-001 Landing Gear Audible Alarm
000526363
39-1504-001 Display Handle
004890661
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Common Aircraft Electrical Material

Picture of Common Aircraft Electrical Material

Radiation-absorbent material, usually known as RAM, is a material which has been specially designed and shaped to absorb incident RF radiation (also known as non-ionising radiation), as effectively as possible, from as many incident directions as possible. The more effective the RAM, the lower the resulting level of reflected RF radiation. Many measurements in electromagnetic compatibility (EMC) and antenna radiation patterns require that spurious signals arising from the test setup, including reflections, are negligible to avoid the risk of causing measurement errors and ambiguities.

One of the most effective types of RAM comprises arrays of pyramid shaped pieces, each of which is constructed from a suitably lossy material. To work effectively, all internal surfaces of the anechoic chamber must be entirely covered with RAM. Sections of RAM may be temporarily removed to install equipment but they must be replaced before performing any tests. To be sufficiently lossy, RAM can be neither a good electrical conductor nor a good electrical insulator as neither type actually absorbs any power. Typically pyramidal RAM will comprise a rubberized foam material impregnated with controlled mixtures of carbon and iron. The length from base to tip of the pyramid structure is chosen based on the lowest expected frequency and the amount of absorption required. For low frequency damping, this distance is often 24 inches, while high-frequency panels are as short as 3–4 inches.

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