摘要:
Graft polymers containing (A) a polymeric grafting base devoid of monoethylenically unsaturated units, and (B) polymeric side chains formed by polymerization of a cyclic N-vinylamide of the general formula I where R is C1-C5-alkyl and R1 is hydrogen or C1-C4-alkyl, wherein said side chains (B) account for ≧60% by weight of the total polymer.
摘要:
A rotor blade (1), in particular of a main rotor of a rotary-wing aircraft, made of fiber-reinforced plastic includes a blade section (10) and a connecting section (12) for fastening the rotor blade (1) to a drive device (18) which includes a sleeve-shaped connecting device (14), is further developed in that the connecting device (14) includes flat fiber layers (S1 to S18) running substantially in the plane of extension of the connecting section (12).
摘要:
Graft polymers containing (A) a polymeric grafting base devoid of monoethylenically unsaturated units, and (B) polymeric side chains formed from copolymers of two different monoethylenically unsaturated monomers (B1) and (B2) which each contain at least one nitrogeneous heterocycle, wherein said side chains (B) account for from 35 to 55% by weight of the total polymer.
摘要:
A rotor blade (1), in particular of a main rotor of a rotary-wing aircraft, made of fibre-reinforced plastic includes a blade section (10) and a connecting section (12) for fastening the rotor blade (1) to a drive device (18) which includes a sleeve-shaped connecting device (14), is further developed in that the connecting device (14) includes flat fibre layers (S1 to S18) running substantially in the plane of extension of the connecting section (12).
摘要:
The screw assembly comprises a drive unit whose output shaft (14) can be connected with a button die to be applied to a screw head.To prevent the casing (10) of the drive unit from rotating, it is fitted with a retainer (24) which is placed against a solid abutment.The retainer (24) has a ring (23) enclosing the output shaft and being connected via a torsionally elastic element (16) with the casing (10).Torsional deformation of the torsionally elastic element (16) is used as a measure for the torque acting on the screw head. (FIG. 1).