Lobed composite flexbeam

Patent · Tue May 24 00:00:00 EDT 1988

OSTI ID:6910541

Noebren, W L; Hibyan, E S; Byrnes, F E

A flexbeam having a hub portion, a flap flexure portion outboard of the hub portion, a lag-torsion flexure portion outboard of the flap flexure portion, and a blade attachment portion outboard of the lag-torsion portion, and having fibers of composite material extending longitudinally the length of the flexbeam is described, characterized by: longitudinal lobes defined by a radiused grooves, extending into the lag-torsion flexure portion of the flexbeam from the upper and lower surfaces of the lag-torsion flexure portion to a central planar portion of the lag-torsion flexure portion, the grooves being radiused at their bases to enhance the torsion flexure characteristics of the lag-torsion flexure portion.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4746272
• OSTI ID: 6910541
• Resource Relation: Patent File Date: Filed date 23 Jul 1986
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COMPOSITE MATERIALS
FABRICATION
MECHANICAL STRUCTURES
DESIGN
BUILDING MATERIALS
FLEXIBILITY
SUPPORTS
TENSILE PROPERTIES
TORSION
MATERIALS
MECHANICAL PROPERTIES
360603* - Materials- Properties
360601 - Other Materials- Preparation & Manufacture
320107 - Energy Conservation
Consumption
& Utilization- Building Systems- (1987-)