DAVID P NAGLE
Engineering in Montgomery, MA

6213719, Apr 10, 2001

Jul 28, 1999

9/362605

John A. Violette - Granby CT
Coleman D. Shattuck - Colchester CT
David P. Nagle - Westfield MA

United Technologies Corporation - Windsor Locks CT

F01D 530, B64C 1106

416205

A composite propeller blade and hub attachment assembly is disclosed. The assembly includes a blade root having a first connecting member and a hub arm having a second connecting member. The first connecting member meshingly engages the second connecting member. A device preloads the blade root and the hub arm. The first and second connecting members form a slot for receiving the preloading device. The preloading device includes an outer movable unit, an inner movable unit, and a mechanism for displacing the outer and inner movable units relative each other. As the mechanism for displacing relatively moves the inner and outer units, the preloading device is caused to expand and tension the blade root and hub arm for mechanically preloading the blade, in a manner which increases the low centrifugal load off lightweight composite blades.

5392514, Feb 28, 1995

Sep 20, 1993

8/123769

James A. Cook - Agawam MA
David P. Nagle - Westfield MA

United Technologies Corporation - Hartford CT

B23P 1500

2988971

A method of making a shell (30) of a lightweight composite propulsor blade (10) of spar and shell construction having a leading edge portion (39) having twice the thickness as the remainder (33, 35, 37) of the shell thereby enhancing resistance to foreign object damage and improving erosion resistance.

6305905, Oct 23, 2001

May 5, 1999

9/305539

David P. Nagle - Westfield MA
John A. Violette - Granby CT

United Technologies Corporation - Windsor Locks CT

B63H 120

416204R

A propeller blade for attachment to a receiving member of a hub of a propeller, is disclosed. The blade comprises a composite spar having an elongated portion formed in the shape of an airfoil. The elongated portion has a base end and a tip end, and a base portion for attachment to the receiving member. The base portion extends substantially transverse to the elongated portion and includes openings for receiving fasteners for fastening the spar to the receiving member. The blade also preferably includes an inner and outer sleeve for protecting the spar from frictional and compressive force wear in the base portion from fasteners. Preferably, the blade also includes an outer fiberglass shell and an inner weight tube for optionally adding more weight to the blade. The composite spar is preferably formed from a composite wall defining an interior space, which space is preferably filled with foam.

2013028, Oct 24, 2013

Apr 18, 2012

13/449902

David P. Nagle - Westfield MA, US
Paul A. Carvalho - Hadley MA, US

HAMILTON SUNDSTRAND CORPORATION - Windsor Locks CT

F01D 5/14, B21D 53/78

416226, 298896

A propeller blade includes a foam core having a slot formed through it from a camber side to a face side, an internal stiffener disposed through the slot and including flanges in contact with both the camber and face sides and a structural layer that surrounds at least a portion of the foam core and in contact with the flanges on both the camber and face sides.

2013013, May 30, 2013

Nov 30, 2012

13/690033

David P. Nagle - Westfield MA, US
Paul Carvalho - Westfield MA, US
Bruno Seminal - Lot, FR
Stephane Grimal - Figeac, FR

F01D 5/14, B29D 99/00

416230, 156245

A propeller blade includes a foam core and a structural layer that surrounds at least a portion of the foam core and includes a face side and a camber side is disclosed. The propeller blade also includes an insert disposed in the foam core in operable contact with the face side and the camber side of the structural layer.

5439353, Aug 8, 1995

Jun 9, 1994

8/257401

James A. Cook - Agawam MA
David P. Nagle - Westfield MA

United Technologies Corporation - Hartford CT

F01D 514

416230

Composite Blade With Reinforced Leading Edge The shell (30) of a lightweight composite propulsor blade (10) of spar and shell construction has a leading edge portion (39) having twice the thickness as the remainder (33, 35, 37) of the shell thereby enhancing resistance to foreign object damage and improving erosion resistance.

2013013, May 30, 2013

Nov 30, 2012

13/689959

David P. Nagle - Westfield MA, US
Ludovic Prunet - Themines, FR
Patrice Brion - Lunan, FR

F01D 5/14

416230, 298896

A propeller blade includes a foam core, an adhesive layer formed on the core and a structural layer that covers at least a portion of the adhesive layer and that surrounds at least a portion of the foam core.

2013034, Dec 26, 2013

Jun 26, 2012

13/533218

Michael E. Folsom - Ellington CT, US
Blair A. Smith - South Windsor CT, US
David P. Nagle - Westfield MA, US

HAMILTON SUNDSTRAND CORPORATION - Windsor Locks CT

F01D 5/14, B23P 15/04

416226, 2988971

According to one embodiment, a propeller blade includes a carbon foam core and a structural layer that surrounds at least a portion of the carbon foam core.

2013028, Oct 24, 2013

Apr 18, 2012

13/449460

Blair A. Smith - South Windsor CT, US
Michael E. Folsom - Ellington CT, US
David P. Nagle - Westfield MA, US

HAMILTON SUNDSTRAND CORPORATION - Windsor Locks CT

F01D 5/14, B21D 53/78

416223 R, 2988971

According to one embodiment, a propeller blade includes a metallic foam core and a structural layer that surrounds at least a portion of the metallic foam core.