Research of highway runway clearance rules |
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Affiliation: | 1. Ontario Ministry of Natural Resources and Forestry, Lake Ontario Management Unit, RR # 4, Picton, ON KOK 2T0, Canada;2. Cornell University, Biological Field Station, Bridgeport, NY 13030, USA;3. Ontario Ministry of Natural Resources and Forestry, Aquatic Research and Development Section, RR # 4, Picton, ON KOK 2T0, Canada;4. U.S. Geological Survey Great Lakes Science Centre, Lake Ontario Biological Station, Oswego, NY 13126, USA;5. Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 867 Lakeshore Road, Burlington, ON L7S 1A1, Canada |
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Abstract: | Aiming at the problems in the highway runway clearance condition evaluation, according to the improved obstruction requirement of highway runway, the inner transitional surface (ITS) and outer transitional surface (OTS) range are calculated and analyzed in detail, the shape range of the ITS and OTS is pointed out, the methods of calculating the intersecting line and the key various points among ITS, runway strip (RS), inner horizontal surface (IHS) in terminal clearance zone (TCZ), including among OTS, IHS and outer horizontal surface (OHS) in side clearance zone (SCZ) are put forward. Furthermore, obstruction requirement when aircraft are placed on apron of the near highway sections is considered, then the corresponding steps of evaluation are proposed. The procedural design of highway runway clearance condition evaluation is realized by means of software to program. The superelevation condition of the obstacle in the clearance of the highway runway is calculated and analyzed by actual examples. All these have provided a theoretical basis for exactly determining the position, altitude and the superelevation value of the obstacle in the highway runway clearance zone. |
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Keywords: | Highway runway Clearance condition evaluation Inner transitional surface Outer transitional surface Obstruction requirement |
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