Bevel-helical gear unit B4 nal additional Taconite seal on the high speed sh B4-HH-16-A

Flender/Flender Gear Units/Bevel-helical gear unit B4

tion of instrumentdevelopmentwhich could culminate in an advanced aircraft system capable of identifying air pollutants, quantifying emissions, and monitoring their transport, dispersion, and oxidation to secondary pollutants. 2. Working steps - Development of an aircraft inlet system and sample distribution system not affected by - Expansion of the number of substances which can be measured; - Development of an active aircraft steering system with process control, real-time data - Completion of feasibility study of analytical methods that are potentially important for environmental conditions, .. aircraft-icing; processing and new flight navigation system; measuring pollutants using aircraft platforms. 3. Results The initial efforts focused on the de ree of compatibility between the aircraft measurement system and the conventional metho& in use for monitoring emission of air pollutantsand pol- lutant distribution at environmental agencies Comparison of these requirements with the cur- rent state of aircraft measuring techniques showed that on1 fraction of the measurements sought from aircraft platforms can actually be carried out Lecause appropriate procedures ~- ~ 1 have not yet been developed. In particular, methods for determining organic air pollutants as well as remote sensing procedures for monitoring emission sources are lacking. In addition, aircraft measurements, as currently carried out, are still too expensive for routine monitoring purposes. Control of emissions using aircraft platforms requires development of remote sensing tech- niques with which the emitters can be located and their gas plumes traced. Recent research has demonstrated the capabilities of measurement techniques based on Fourier-Transform-IR- Spectroscopy. Development of automated pictorial methods has been proposed. These remote sensing techniques are based on spectroscopic measurement principles which are commonly feasible only for smaller molecules; co