Chemistry in plumes of high-flying aircraft with H2 combustion engines: a modelling study
Recent discussions on high-speed civil transport (HSCT) systems have renewed the interest in the chemistry of supersonic-aircraft plumes. The engines of these aircraft emit large concentrations of radicals like O, H, OH, and NO. In order to study the effect of these species on the composition of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1994-04-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/12/403/1994/angeo-12-403-1994.pdf |
| Summary: | Recent discussions on high-speed civil
transport (HSCT) systems have renewed the interest in the chemistry of
supersonic-aircraft plumes. The engines of these aircraft emit large
concentrations of radicals like O, H, OH, and NO. In order to study the effect
of these species on the composition of the atmosphere, the detailed chemistry of
an expanding and cooling plume is examined for different expansion models.
<p style="line-height: 20px;">For a representative flight at 26 km the computed trace gas
concentrations do not differ significantly for different models of the expansion
behaviour. However, it is shown that the distributions predicted by all these
models differ significantly from those adopted in conventional meso-scale and
global models in which the plume chemistry is not treated in detail. This
applies in particular to the reservoir species HONO and H<sub>2</sub>O<sub>2</sub>. |
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| ISSN: | 0992-7689 1432-0576 |