ionHelical gear units Vertical mounting position B3-VH16A Bevel-helical gearboxes B3

Flender/Flender Gear Units/Bevel-helical gearboxes B3

onents, while taking specific goundary conditions into consideration. identification and quantification of adsorbed PAHs requires knowled the substrate, for 1 Duration: 0.1 0.8 - 3.0.9 0 VQ8 Subject: Collaborative project: Aircraft measurements of air pollutants Sub-project: Development of advanced com onents for an aircraft system for measuring emission and transport of politants in the lower troposhere Research Center: Fraunhofer Gesellschaft zur Forderung der angewandten Forschung .. (FHG), Leonrodstr. 5, -8 Munchen, Government sponsorship: 4,3,9.0 DM Sponsorship ratio: 9.5 YO 1. Purpose of the project Various anthropogenic activities, such as industry, heating, traffic and agriculture, result in the emission of number of pollutants into the atmosphere. Most of these pollutants are sub- sequently oxidized by photochemical reactions to form secondary products which may be considerabl more toxic for humans, animals and plants than the primary emitted substances. Examples /such secondary air pollutants are ozone, peroxy-acetyl nitrate and nitro aromates. In ite of the significance of air pollution, our knowledge of the extent, location, and type of politant emissions as well as of the height (smokestack height) at which these emissions occur is nevertheless quite limited. This is particularly true for volatile organiccompounds inclu- ding number of highly 'carcinogenic or mutagenic components. Documentation of the atmospheric distribution of strongly oxidizing substances such as ozone, peroxyacetyl nitrate, hydrogen peroxide, organic peroxides, or acids such as nitric acid (which is extremely phytoto- xic) is also deficient. Aircraft measurements can improve our knowledge base for the emission and distribution of air pollutants. Transport of lar amounts of pollutants such as sulfur dioxide and nitrogen oxides beyond national bounjaries has been established by aircraft measurements. Theobjectiveofthisstudywas toassess thefuturedirec