Sikorsky Aircraft Corporation

United Technologies Corporation

Wonsub Kim

Kevin P Leahy

Richard Joseph Simkulak

Marcus D Cappelli

Richard T Reavely

Joshua Mancher

A method of repairing a damaged portion of a rotor blade includes filling the damaged portion with a filler material. A pre-cured patch assembly is applied over the damaged portion, the patch assembly including one or more laminate packs positionable at at least one of an upper rotor blade surface and a lower rotor blade surface and one or more overwrap plies positionable over the upper rotor blade surface and the lower blade surface. A repair structure for a damaged portion of a rotor blade includes a volume of fill material disposed at the damaged portion.

Rotor blade repair structure and method

A main rotor blade assembly includes a tip cap removably mountable to an outboard end section of a forward tip spar section and an aft tip spar section.

Main rotor blade with removable tip cap

A main rotor blade assembly having a blade skin bonded to a main spar and a tip spar.

Main rotor blade with integral tip section

A main rotor blade assembly includes a tip spar which defines a tip spar non-straight form, an upper blade skin which defines an upper blade skin non-straight form adjacent to the tip spar non-straight form and a lower blade skin which defines a lower blade skin non-straight form adjacent to the tip spar non-straight form.

A method of making fiber reinforced composite articles from stabilized dry fiber preforms which are impregnated with a thermosetting resin by the resin transfer molding method. The dry fiber preforms may be stabilized prior to molding by dispersing a polymeric binder between adjacent dry fabric plies of the preform. Hot air is passed through the preform after it has been compressed to fuse the binder and bind the dry fabric plies together, forming a stabilized high density fiber preform. Forming a preform by this method is significantly less labor and time intensive than methods currently in use.

Growing community of inventors

Orange, CT, United States of America

Wonsub Kim