| 摘要 |
FIELD: safety engineering in servicing aerodrome structures and runway. SUBSTANCE: three versions are proposed. According to first version, surface consists of bimetallic two-layer sheet (upper layer - riffled aluminium) and zinc-plated metal pipes of triangular or round section for quick transfer of large amount of heat per time unit from heat-transfer agent to bimetallic sheet, i. e. to its aluminium layer, as well as for taking up dynamic loads from aircraft wheels sheet and pipes rest against concrete slab; pipes may be also arranged along runway at its edges and at center so that pipes should be between wheels of aircraft. According to second version, electric heater is provided which is made in form of zigzag strip in layer of metallized concrete mix with addition of metal powder to it. According to third version, electric heater made in form of zigzag strip is mounted directly on concrete slab, in line with it. EFFECT: additional expenses for device are compensated for by avoidance of difficulty in landing and take-off of aircraft in snowstorm and in snowfall. |
