| 摘要 |
FIELD: transport.SUBSTANCE: invention relates to aircraft engineering, particularly, to protective means preventing the ingress of foreign matters into aircraft engines. Proposed device comprises lower panel of relative lengthand relative widthSaid panel tail is furnished with flap of relative lengthSaid panel can extend for relative lengthmaking 0.6-0.3 at proportional change in air intake lower edge position above airfield surfacemaking 0.8-1.25. Lower panel flap oscillates through the angle ?=25°-30° relative to air intake face edge with oscillation period T= 1.0-4.0 s, where ? is panel extension, m; l is lower panel length, m; b is lower panel width, m; c is lower panel flap length, m; H is air intake lower edge position above airfield surface, m;is equivalent diameter of air intake inlet, m; A is air intake height, m; B is air intake width, m.EFFECT: higher efficiency of protection.3 dwg |
