| 摘要 |
FIELD: aviation, applicable on aircraft whose structure assumes collision of the blades, when the value of their flapping motion exceeds the preset limits, with the aircraft structural members and/or with the surrounding objects, for example, with the earth surface. ^ SUBSTANCE: the device has a protective member with a contact surface and means of its conjugation with the aircraft structural members. The points of the contact surface of the protective member lie with in the conditional cylinder, whose axis is located in the region of the reference positions of the propeller axis of rotation, and the surface is described about the region of the preset positions of the propeller blades faced by the contact surface of the protective member, whose at least separate fragments are made smooth in the direction of circular motion of the propeller blades. The contact surface of the protective member may be made flat or convex towards the region of the preset positions of the propeller blades, as well as toroidal or spheroidal. The top of the contact surface of the protective member may be positions beyond the region of the preset positions of the propeller blades or on its boundary. ^ EFFECT: provided simultaneous prevention of damage both of the aircraft members and the propeller blades. ^ 6 cl, 6 dwg |
