# US 8,740,138 B2 · Aircraft engine supporting pylon > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,740,138 B2 - Document ID: US8740138B2 - Status: Granted - Kind: B2 - Application number: 12/830,749 - Filed: 2010-07-06 - Published: 2011-07-14 - Granted: 2014-06-03 - Earliest claimed: 2010-01-14 - Assignees: Airbus Operations S.L. - Applicants: Pablo Timoteo Sanz Martinez; Diego Folch Cortes - Inventors: Pablo Timoteo Sanz Martinez; Diego Folch Cortes - Web page: https://patentgrep.com/patent/US8740138B2 ## CPC - B64D 27/14: within, or attached to, fuselages - B64C 1/26: Attaching the wing or tail units or stabilising surfaces - B64D 27/402: {comprising box like supporting frames, e.g. pylons or arrangements for embracing the power plant} - B64D 27/026: {comprising different types of power plants, e.g. combination of a piston engine and a gas-turbine (Hybrid electric aircraft B64D27/33)} - B64D 2027/005: {Aircraft with an unducted turbofan comprising contra-rotating rotors, e.g. contra-rotating open rotors [CROR]} - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - B64C: AEROPLANES; HELICOPTERS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An aircraft pylon support system for mounting and supporting aircraft propulsion systems to a fuselage section of an aircraft that includes an internal, central support box disposed within and extending across the interior of an aircraft fuselage, and external support boxes extending laterally into pylons disposed at both sides of the aircraft, each of the internal and external support boxes being made of a composite material and structured as multi-spar boxes containing lateral spars and at least one central spar, wherein the central and lateral support boxes are connected together to provide a continuous interface therebetween with a full transfer of loads therebetween and between any interrupted, intermediate frame members. ## Claims ### Claim 1 An aircraft pylon support system mounting and supporting aircraft propulsion systems to a fuselage section of an aircraft which comprises: an internal, central support box adapted to be disposed within and extend across and through the center of the aircraft fuselage section, and external support boxes adapted to extend laterally into pylons disposed at both sides of the aircraft fuselage section and adapted to support the propulsion system, each of said internal and external support boxes being made of a composite material and structured as multi-spar boxes containing lateral spars and at least one central spar, wherein the internal central support box and lateral support boxes are connected together to provide a continuous interface therebetween with a full transfer of loads therebetween and between interrupted, intermediate frame members. ### Claim 2 (depends on 1) The aircraft pylon support system according to claim 1, wherein the internal central support box has the same number of central spars as the number of said interrupted intermediate frame members, said central spars being located in the same fuselage section as said interrupted intermediate frame members to provide load path continuity. ### Claim 3 (depends on 2) The aircraft pylon support system according to claim 2, wherein the internal central support box is disposed within a mid portion of the fuselage section. ### Claim 4 (depends on 2) The aircraft pylon support system according to claim 2, wherein the aircraft propulsion systems are provided with propeller blades. ### Claim 5 (depends on 1) The aircraft pylon support system of claim 1, wherein the fuselage section is located in the aircraft rear fuselage. ### Claim 6 (depends on 5) The aircraft pylon support system according to claim 5, wherein the internal central support box is disposed within a mid portion of the fuselage section. ### Claim 7 (depends on 1) The aircraft pylon support system of claim 1, wherein the internal central support box is placed within a mid fuselage section. ### Claim 8 (depends on 1) The aircraft pylon support system of claim 1, wherein the aircraft propulsion systems have propeller blades. ### Claim 9 (depends on 1) The aircraft pylon support system according to claim 1, wherein the fuselage section is located in a rear portion of the fuselage section. ### Claim 10 (depends on 1) The aircraft pylon support system of claim 1 wherein the fuselage section is provided with a fuselage skin and the internal central support box and external support boxes are provided with upper and lower skins. ### Claim 11 (depends on 10) The aircraft pylon support system according to claim 10, wherein attachment means are provided for attaching the pylon support system together and to the aircraft fuselage section; rows of tension fittings are provided between the upper and lower skins of the external support boxes and the upper and lower skins of the internal central support box with tension bolts crossing the fuselage skin and rows of tension fittings are provided between the lateral spars of the external boxes and the lateral spars of the central box with tension bolts crossing the fuselage skin. ### Claim 12 (depends on 11) The aircraft pylon support system according to claim 11, wherein the attachment means also includes attachment fittings with bolts disposed between the interrupted intermediate frame members and the central spars. ### Claim 13 (depends on 12) The aircraft pylon support system according to claim 12, wherein the fuselage section is located in the aircraft rear fuselage. ### Claim 14 (depends on 12) The aircraft pylon support system according to claim 12, wherein the internal central support box is disposed within a mid portion of the fuselage section. ### Claim 15 (depends on 12) The aircraft pylon support system according to claim 12, wherein the aircraft propulsion systems are provided with propeller blades. ### Claim 16 (depends on 11) The aircraft pylon support system according to claim 11, wherein the fuselage section is located in the aircraft rear fuselage. ### Claim 17 (depends on 11) The aircraft pylon support system according to claim 11, wherein the internal central support box is disposed within a mid portion of the fuselage section. ### Claim 18 (depends on 11) The aircraft pylon support system according to claim 11, wherein the aircraft propulsion systems are provided with propeller blades. ### Claim 19 (depends on 1) The aircraft pylon of claim 1, wherein the internal central support box extends in a straight line across and through the center of the aircraft fuselage section to connect with the lateral external support boxes.