Patent · US Expired

Rotor having a hingeless and bearingless blade connection

US4452569A · kind A · utility

3Cited by

7References

7Claims

0Family size

Assignee

Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftung · DE

Inventors

Michael Stephan · Berlin, DE
Alois Schwarz · Putzbrunn, DE

Key dates

Filing date	Jun 1, 1982
Grant date	Jun 5, 1984
Priority date	—
Expiry date	Jun 1, 2002

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/33
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The blades or wings of a rotor for example of a rotary wing aircraft, are nnected to the rotor head in a hingeless and bearingless manner by a blade neck section, which is flexible relative to torsion loads, flapping movements and lead-lag movements. The blade angle adjustments are made by a torsion stiff control rod bridging the flexible blade neck section. The control rod is flexible relative to flapping and lead-lag movements. The radially outer end of the control rod is rigidly connected to the respective wing. The radially inner end of the control rod is connected to the rotor head in such a manner that the control rod is movable substantially in the direction of its own longitudinal axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.