MH/T 6012-2015 in English
SUPERSEDEDAeronautical obstacle light
- Issued on:2015-12-22
- Implemented on:2016-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$437.00
| Standard No: | MH/T 6012-2015 |
| Document status: | SUPERSEDED |
| Superseded by: |
MH/T 6012-2015/XG1-2017 Aeronautical obstacle light, includes Amendment 1
|
| Superseded on: | 2017-05-25 |
| Title in English: | Aeronautical obstacle light |
| Title in Chinese: | 航空障碍灯 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2015-12-22 |
| Implemented on: | 2016-01-01 |
| Superseding: |
MH/T 6012-1999 Aeronautical obstacle light
|
| Professional Classification: | MH-Civil Aviation |
| Related Keywords: | light intensity type
light intensity light intensity attenuation effective light intensity formula light intensity calculation introduce |
| Related Topics: | mh/t 6012-2015
mh/t5111-2015 mh/t+6012-2015 mh/t 0054.1 2015 barrier mh/t5110-2015 mh/t 0054.1-2015 obstacle sail multiple obstacles pool barrier mh/t 2015 /barrier ios accessibility MH/T6102-2015 mh6012 mh/t6012- 2015 mh6012-2015 |
Introduction
Background and evolution of standard revision
MH/T 6012-2015 replaces the 1999 version of the standard. The main technical upgrades include:
| Revision dimensions | 1999 version | 2015 version |
|---|---|---|
| Lamp classification | 3 categories | Expanded to 8 categories (newly added A/C/D low-intensity, C-type medium-intensity) |
| Technical parameters | Basic light intensity requirements | Added effective light intensity calculation formula and chromaticity coordinate specifications |
| Environmental adaptability | -40℃~55℃ | Added 6 harsh environment tests such as salt spray and radiation |
Core classification system
Obstruction lights are divided into three categories and nine types according to light intensity. Key parameters are compared:
| Type | Representative model | Light intensity range (cd) | Flash frequency |
|---|---|---|---|
| Low light intensity | Type B | 32 (constant) | - |
| Medium light intensity | Type A | 20,000~100,000 | 20-60 times/min |
| High light intensity | Type B | 200,000+ | 40-60 times/min |
Key technical requirements
5.2.5 Chromaticity specification
Strictly limited by CIE chromaticity coordinates:
- Red: x≥0.980-7y and y≤0.335
- White: x≤0.440 and y≥0.150+0.640x
5.3.1 Light Intensity Calculation
Introduce the effective light intensity formula:
Ieff = ∫I(t)dt / (0.2+t2-t1)
Where t1, t2 are the start and end times of the flash
Implementation Recommendations
Selection Guide
- Building height <45 meters: Use Type B low-intensity obstacle lights
- 45-150 meters: Use a combination of medium-intensity and low-intensity lamps
- ＞150 meters: Type A high-intensity obstacle light system must be configured
Maintenance points
According to standard 5.2.16 requirements:
LED light source life must be ≥50,000 hours
Annually, the following tests should be performed:
1) Light intensity attenuation test
2) Chromaticity shift test
3) Control device function verification
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