Ice Detection Systems: A Historical Perspective
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Résumé
<div class="htmlview paragraph">Ice protection systems were installed on DC-3s, B-29s and other aircraft during World War II. Initially ice detection was not considered a requirement for aircraft safety.</div> <div class="htmlview paragraph">One of the earliest ice detectors installed on a production aircraft (C-130) was pneumatic. Subsequently many other technologies have been applied to detect the presence of meteorological icing. Ice detectors employing visible light, infrared light, alpha radiation, natural resonance frequency, capacitance, speed of sound, heat of fusion, and microwaves have all been developed over the years.</div> <div class="htmlview paragraph">This paper will review the different ice detection technologies and explore some of the similarities, differences, benefits and drawbacks for the purposes of performing their intended function.</div> <div class="htmlview paragraph">One of the drivers for developing new ice detection technology has been aircraft icing accidents and incidents. For example, a number of MD-80 accidents caused by engine flame-outs during take-off have prompted development of surface-based ice detection solutions that could detect ice accretion on wing surfaces prior to take-off. Other accidents such as the Comair CRJ crash in Fredericton, New Brunswick, Canada and the American Eagle ATR-42/72 crash in Roselawn, Indiana have spurred research into different ice detection technologies related to the Ludlam Limit and Supercooled Large Droplets (SLD) respectively. This paper will review various aircraft accidents and incidents that have had an impact on ice detection technology.</div> <div class="htmlview paragraph">While no Federal Aviation Regulations (FARs) exist today which deal specifically with ice detection systems, there has been some industry guidance material published which provides information on the design of ice detection systems. Due to the increased industry awareness of aircraft icing issues, a number of industry committees such as EUROCAE and IPHWG have been established to develop new guidance material and proposed regulation changes related to ice detection systems. The release of the ED-103/104 Minimum Operational Performance Specifications and other guidance material such as the recent updates to AC 20 73 published by the FAA have had an impact on the development and certification of ice detection systems.</div> <div class="htmlview paragraph">This paper will review the regulation changes that impact ice detection system design and certification, including a discussion regarding the ability of ice detection technologies to meet these requirements and to be certified as a Primary system.</div>
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| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,002 | 0,002 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
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