David M. Cournoyer - Seymour CT Neil W. Cawthra - Shelton CT Thomas A. Carstensen - Shelton CT Christian A. Rogg - New Milford CT Michael G. Osiecki - Oxford CT
Assignee:
Sikorsky Aircraft Corporation - Stratford CT
International Classification:
B29C 3338
US Classification:
425520, 425389, 249135
Abstract:
The composite molding apparatus includes a rigid base member and a complementary semi-rigid mold member or âblack bagâ caul plate having a sieve member formed therein. The sieve member layer of the semi-rigid mold member engages pins which extend from the sandwich core to limit penetration into the semi-rigid mold member to a predetermined depth. The semi-rigid mold member is supported relative to the rigid mold member by the pins to provide uniform pressure transfer to the composite article during a high pressure co-cure molding process without crushing the sandwich core.
Composite Transmission Housing With Discontinuous Fiber Preforms
A composite transmission housing includes resin transfer molding or vacuum assisted resin transfer molding manufacturing processes combined with discontinuous fiber preforms. The preforms are assembled in a prepared injection and cure mold with additional details and fillers. The preforms are constructed such that the preforms are assembled into the mold in a specific order to assure proper arrangement. Using a combination of vacuum and pressure, a resin is injected into the mold to completely infuse the assembled preforms. At completion, the mold is heated to the resin cure temperature and held at this temperature for sufficient time to insure complete cure.
A composite material has a foam core having first and second faces. A plurality of fibrous pins have first end portions protruding from the core first face. A first face sheet is secured to the core first face. The first face sheet comprises, in major part, one or more non-woven, non random, fiber layers. The pin first end portions protrude into the first face sheet.
Thomas A. Carstensen - Shelton CT, US David M. Cournoyer - Seymour CT, US Dan Ursenbach - Hamden CT, US
Assignee:
SIKORSKY AIRCRAFT CORPORATION - Stratford CT
International Classification:
E04B 1/00
US Classification:
52268
Abstract:
An aircraft floor system includes a composite panel which generally includes an inboard layer, an inboard interlock layer, a core layer, an outboard interlock layer and an outboard layer. The advanced sandwich core material may include K-Cor™ or X-Cor™ which is pinned through at least one ply of dry composite reinforcement to provide a mechanical lock between the pins and an inboard and outboard interlock layer. Bonding of the locked-in ply with the inboard and outboard results in improved structural performance and damage tolerance.
Composite Thermoplastic Matrix Airframe Structure And Method Of Manufacture Therefore
Thomas Carstensen - Shelton CT, US William V. Forster - Oxford CT, US Christian A. Rogg - New Milford CT, US
International Classification:
B32B 38/04 B29C 65/00 B32B 5/00
US Classification:
156 91, 156 60, 156256, 156252, 4281951, 428201
Abstract:
A thermoplastic matrix airframe structure section includes a multitude of thermoplastic matrix frame members and a multitude of thermoplastic matrix beam members which form a substructure, which receives a thermoplastic matrix inner cap grid structure, a thermoplastic matrix outer cap grid structure, and a thermoplastic matrix skin which are in-situ co-bonded to the substructure to significantly strengthen and unify the substructure.
Non-Ceramic Structural Panel With Ballistic Protection
An armor panel includes a multiple of pins which penetrate a first skin, a high molecular weight polyethylene fiber composite material layer and a second skin which integrates ballistic protection into load bearing structure.
William A. Townsend - Stratford CT, US Thomas A. Carstensen - Shelton CT, US Connie E. Bird - Rocky Hill CT, US
International Classification:
B64D 7/00 F41H 5/04
US Classification:
89 3602
Abstract:
An armor system which integrates ballistic protection into load bearing structure. Each armored panel is manufactured as a sandwich structure having a multiple of layers including a hard ballistic material layer of a Ceramic/CMC hybrid armor material capable of defeating high velocity Armor Piercing projectiles.
Composite Molding Apparatus For High Pressure Co-Cure Molding Of Lightweight Honeycomb Core Composite Articles Having Ramped Surfaces Utilizing Low Density, Stabilized Ramped Honeycomb Cores
Alex C. Dublinski - Northford CT Thomas A. Carstensen - Shelton CT Philip J. Ramey - Milford CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B29C 3318
US Classification:
425504
Abstract:
A composite molding apparatus for high pressure co-cure molding of lightweight honeycomb core composite articles having ramped surfaces utilizing low total density, stabilized ramped honeycomb cores. The composite molding apparatus is a semi-rigid molding assembly that includes a rigid base member and a complementary semi-rigid mold member that is formed from a combination of layers of fiber-reinforced elastomeric material and unreinforced elastomeric material. The semi-rigid mold member further includes internal rigid reinforcement inserts formed from a structurally rigid material and having a configuration that matches the configuration of the ramped surfaces of the honeycomb composite article. The rigid reinforcement inserts are interleaved between the layers of fiber-reinforced elastomeric material and/or unreinforced elastomeric material forming the semi-rigid mold member. The rigid reinforcement inserts of the semi-rigid mold member provide symmetric pressure distribution over the ramped surfaces of the honeycomb core and the overlayed composite prepregs during the high pressure co-cure process.