MIL-PRF-21480B
CONTENTS
PARAGRAPH
PAGE
1.
SCOPE ...... ......................................................................................................................... 1
1.1
Scope ....................................................................................................................... 1
1.2
Classification........................................................................................................... 1
1.2.1
Generator class ........................................................................................................ 1
1.2.2
Part or identifying number (PIN) ............................................................................ 1
2.
APPLICABLE DOCUMENTS .......................................................................................... 1
2.1
General .................................................................................................................... 1
2.2
Government documents .......................................................................................... 1
2.2.1
Specifications and standards ................................................................................... 1
2.3
Non-Government publications................................................................................ 2
2.4
Order of precedence ................................................................................................ 3
3.
REQUIREMENTS.............................................................................................................. 3
3.1
Specification sheets................................................................................................. 3
3.2
Qualification ........................................................................................................... 3
3.3
Materials ................................................................................................................. 3
3.3.1
Selection of materials, parts, and processes ............................................................ 3
3.3.2
Moisture resistance ................................................................................................. 3
3.3.3
Corrosion resistance ................................................................................................ 3
3.3.4
Contamination by fluids.......................................................................................... 3
3.3.5
Toxicity and fire resistance ..................................................................................... 3
3.4
Design and construction.......................................................................................... 4
3.4.1
Electrical insulation and dielectric .......................................................................... 4
3.4.2
Environmental performance.................................................................................... 4
3.4.2.1
Temperature altitude ............................................................................................... 4
3.4.2.1.1
Blast air cooled and integral fan cooled components ............................................. 4
3.4.2.1.2
Liquid-cooled and self-cooled components ............................................................ 4
3.4.2.2
Humidity ................................................................................................................. 4
3.4.2.3
Salt-spray ................................................................................................................ 4
3.4.2.4
Fungus ..................................................................................................................... 5
3.4.2.5
Sand and dust .......................................................................................................... 5
3.4.2.6
Mechanical shock (functional and crash safety) ..................................................... 5
3.4.2.7
Vibration ................................................................................................................. 5
3.4.2.7.1
Engine vibration (category 1) ................................................................................. 5
3.4.2.7.2
Aircraft platform vibration...................................................................................... 5
3.4.2.8
Acceleration forces ................................................................................................. 5
3.4.2.9
Water intrusion and immersion............................................................................... 6
3.4.2.10
Chemical, biological, and radiological (CBR)........................................................ 6
3.4.2.11
Lightning, electromagnetic pulse, and directed energy weapons ........................... 6
3.4.3
Operating position................................................................................................... 6
3.4.4
Explosive atmosphere ............................................................................................. 6
ii
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