Patents by Inventor Arnaud Jean-Marie Pierrot
Arnaud Jean-Marie Pierrot has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10900365Abstract: An assembly forming a gasket for a turbomachine, includes a brush seal made of a plurality of sealing elastic bristles surrounding a core, a retaining ring including a recess to at least partly accommodate the brush seal, and a bearing cover, placed in contact with the brush seal to hold it in position against the retaining ring, the brush seal being located between the retaining ring and the bearing cover.Type: GrantFiled: March 16, 2018Date of Patent: January 26, 2021Assignee: SAFRAN AIRCRAFT ENGINESInventors: Serge Rene Morreale, Francois Jean Comin, Arnaud Jean-Marie Pierrot
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Patent number: 10302470Abstract: A system for measuring an oil retention volume of a first member of an engine lubricating system, the injected oil flowing inside the first member mixed with a first air volume, the mixture forming a first fluid, the measuring system including an oil injector at the inlet of the lubricating system; a first flowmeter to measure a first oil flow rate at the inlet of the lubricating system; a second flowmeter at the outlet of the first member to measure a second flow rate of the first fluid at the outlet of the first member; a measuring device to calculate a first value representing a quantity of oil in a volume of the first fluid flowing inside the first member; a calculator to calculate a third oil flow rate at the outlet from the second flow rate of the first fluid measured and the first value calculated and the instantaneous oil retention volume in the first member from the comparison of the first oil flow rate with the third oil flow rate.Type: GrantFiled: December 3, 2013Date of Patent: May 28, 2019Assignee: SAFRAN AIRCRAFT ENGINESInventors: Arnaud Jean-Marie Pierrot, Serge René Morreale
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Publication number: 20180202303Abstract: An assembly forming a gasket for a turbomachine, includes a brush seal made of a plurality of sealing elastic bristles surrounding a core, a retaining ring including a recess to at least partly accommodate the brush seal, and a bearing cover, placed in contact with the brush seal to hold it in position against the retaining ring, the brush seal being located between the retaining ring and the bearing cover.Type: ApplicationFiled: March 16, 2018Publication date: July 19, 2018Applicant: SNECMAInventors: Serge Rene Morreale, Francois Jean Comin, Arnaud Jean-Marie Pierrot
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Patent number: 9909452Abstract: A device for sealing the coaxial shafts of a turbomachine includes an annular seal able to perform sealing by contact with the outer shaft, and a lubricating device to lubricate the region of contact between the annular seal and the outer shaft.Type: GrantFiled: March 8, 2013Date of Patent: March 6, 2018Assignee: SNECMAInventors: Arnaud Jean-Marie Pierrot, Serge Rene Morreale
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Patent number: 9869193Abstract: A sealing device between two axisymmetric coaxial parts, includes an elastic segment, two holding elements located on each side of the annular segment, an annular spacer arranged between the two holding elements, wherein the annular spacer has a notch around its peripheral rim; the annular elastic segment has a hooking element at each of its free ends, adapted to cooperate with the notch of the annular spacer, and to hold the elastic segment in a pre-holding position by elastic return force.Type: GrantFiled: January 7, 2013Date of Patent: January 16, 2018Assignee: SNECMAInventors: Serge René Morreale, Arnaud Jean-Marie Pierrot
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Patent number: 9551233Abstract: One of the components (15), opposite a labyrinth seal (12), is arranged sliding on a conical interface (18) of its support (7, 19) and constructed from a material with different thermal expansions, so as to reduce the clearance with the component face to face (13, 14), at steady state, at high temperature. The sealing surface (25) may be assured by a circulation of oil.Type: GrantFiled: October 8, 2014Date of Patent: January 24, 2017Assignee: SNECMAInventors: Serge Rene Morreale, Arnaud Jean-Marie Pierrot
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Publication number: 20150316398Abstract: A system for measuring an oil retention volume of a first member of an engine lubricating system, the injected oil flowing inside the first member mixed with a first air volume, the mixture forming a first fluid, the measuring system including an oil injector at the inlet of the lubricating system; a first flowmeter to measure a first oil flow rate at the inlet of the lubricating system; a second flowmeter at the outlet of the first member to measure a second flow rate of the first fluid at the outlet of the first member; a measuring device to calculate a first value representing a quantity of oil in a volume of the first fluid flowing inside the first member; a calculator to calculate a third oil flow rate at the outlet from the second flow rate of the first fluid measured and the first value calculated and the instantaneous oil retention volume in the first member from the comparison of the first oil flow rate with the third oil flow rate.Type: ApplicationFiled: December 3, 2013Publication date: November 5, 2015Inventors: Arnaud Jean-Marie PIERROT, Serge René MORREALE
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Publication number: 20150300191Abstract: An assembly forming a gasket for a turbomachine, includes a brush seal made of a plurality of sealing elastic bristles surrounding a core, a retaining ring including a recess to at least partly accommodate the brush seal, and a bearing cover, placed in contact with the brush seal to hold it in position against the retaining ring, the brush seal being located between the retaining ring and the bearing cover.Type: ApplicationFiled: November 27, 2013Publication date: October 22, 2015Applicant: SNECMAInventors: Serge Rene MORREALE, Francois Jean COMIN, Arnaud Jean-Marie PIERROT
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Publication number: 20150097342Abstract: One of the components (15), opposite a labyrinth seal (12), is arranged sliding on a conical interface (18) of its support (7, 19) and constructed from a material with different thermal expansions, so as to reduce the clearance with the component face to face (13, 14), at steady state, at high temperature. The sealing surface (25) may be assured by a circulation of oil.Type: ApplicationFiled: October 8, 2014Publication date: April 9, 2015Applicant: SNECMAInventors: Serge Rene MORREALE, Arnaud Jean-Marie PIERROT
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Publication number: 20150063981Abstract: A device for sealing the coaxial shafts of a turbomachine includes an annular seal able to perform sealing by contact with the outer shaft, and a lubricating device to lubricate the region of contact between the annular seal and the outer shaft.Type: ApplicationFiled: March 8, 2013Publication date: March 5, 2015Inventors: Arnaud Jean-Marie Pierrot, Serge Rene Morreale
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Publication number: 20150050130Abstract: A sealing device between two axisymmetric coaxial parts, includes an elastic segment, two holding elements located on each side of the annular segment, an annular spacer arranged between the two holding elements, wherein the annular spacer has a notch around its peripheral rim; the annular elastic segment has a hooking element at each of its free ends, adapted to cooperate with the notch of the annular spacer, and to hold the elastic segment in a pre-holding position by elastic return force.Type: ApplicationFiled: January 7, 2013Publication date: February 19, 2015Inventors: Serge René Morreale, Arnaud Jean-Marie Pierrot
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Patent number: 8246310Abstract: A turbomachine fan including blades mounted in slots at the periphery of a rotor disk, and inter-blade platforms having radial lugs for fastening to corresponding lugs of the disk is disclosed. Each platform is fastened to the disk by a pin inserted into orifices in the lugs of the platform and into corresponding orifices in the lugs of the disk.Type: GrantFiled: March 14, 2008Date of Patent: August 21, 2012Assignee: SNECMAInventors: Arnaud Jean-Marie Pierrot, Stephane Rousselin
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Patent number: 8186144Abstract: A dual-flow turbomachine (10), essentially comprising a fan (14), a compressor (20), a combustion chamber (21), a turbine (22) and an exhaust casing (24), which comprises an auxiliary air compressor (48) driven by a Stirling engine (53) mounted downstream of the combustion chamber (21) and having a hot chamber in thermal contact with the flow (B) of hot gases leaving the turbine and a cold chamber in thermal contact with a flow (A) of cold gases generated by the fan (14) and flowing around the turbine (22) and the exhaust casing (24).Type: GrantFiled: August 28, 2008Date of Patent: May 29, 2012Assignee: SNECMAInventors: Laurent Donatien Behaghel, Pascal Coat, Arnaud Jean-Marie Pierrot, Stephane Rousselin
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Gas turbine engine with a means of driving the accessory gear box, and method of fitting said engine
Patent number: 8074455Abstract: A twin-spool gas turbine engine including a high-pressure rotor and a low-pressure rotor, which rotors are mounted in bearings supported by an intermediate casing, at least one accessory gear box, and a drive device which drives radial and coaxial shafts for transmitting movement to the accessory gear box is disclosed. The drive device includes a high-pressure drive gear driving one of the radial shafts and connected to the high-pressure rotor and a low-pressure drive gear connected to the low-pressure rotor upstream of the high-pressure drive gear and driving the other of the radial shafts. The low-pressure drive gear is supported in the intermediate casing by an axial-positioning bearing.Type: GrantFiled: August 22, 2008Date of Patent: December 13, 2011Assignee: SnecmaInventors: Arnaud Jean-Marie Pierrot, Stephane Rousselin -
Patent number: 7685828Abstract: A turbomachine comprising at least one Stirling cycle thermal engine which is mounted at the end of a radial arm of the exhaust casing and comprises a working chamber located outside the primary and secondary flows, a displacing piston associated with a moving element of an energy generation system, and two exchangers, heating and cooling, formed in parts of the radial arm respectively intercepting the primary flow and the secondary flow, these two exchangers communicating with each other and with the working chamber for the circulation of a working fluid.Type: GrantFiled: August 28, 2008Date of Patent: March 30, 2010Assignee: SNECMAInventors: Alain Auguste Jacques Foucault, Etienne Juchauld, Arnaud Jean-Marie Pierrot, Stephane Rousselin
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Publication number: 20090056302Abstract: A dual-flow turbomachine (10), essentially comprising a fan (14), a compressor (20), a combustion chamber (21), a turbine (22) and an exhaust casing (24), which comprises an auxiliary air compressor (48) driven by a Stirling engine (53) mounted downstream of the combustion chamber (21) and having a hot chamber in thermal contact with the flow (B) of hot gases leaving the turbine and a cold chamber in thermal contact with a flow (A) of cold gases generated by the fan (14) and flowing around the turbine (22) and the exhaust casing (24).Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicant: SNECMAInventors: Laurent Donatien BEHAGHEL, Pascal Coat, Arnaud Jean-Marie Pierrot, Stephane Rousselin
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Publication number: 20090058089Abstract: A turbomachine comprising at least one Stirling cycle thermal engine which is mounted at the end of a radial arm (36) of the exhaust casing (24) and comprises a working chamber (40) located outside the primary (B) and secondary (A) flows, a displacing piston (42) associated with a moving element (44) of an energy generation system, and two exchangers, heating (58) and cooling (62), formed in parts of the radial arm respectively intercepting the primary flow (B) and the secondary flow (A), these two exchangers (58, 62) communicating with each other and with the working chamber (40) for the circulation of a working fluid.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicant: SNECMAInventors: Alain Auguste Jacques FOUCAULT, Etienne JUCHAULD, Arnaud Jean-Marie PIERROT, Stephane ROUSSELIN
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GAS TURBINE ENGINE WITH A MEANS OF DRIVING THE ACCESSORY GEAR BOX, AND METHOD OF FITTING SAID ENGINE
Publication number: 20090049841Abstract: The invention relates to a twin-spool gas turbine engine comprising a high-pressure rotor (and a low-pressure rotor, which rotors are mounted in bearings supported by an intermediate casing, at least one accessory gear box, a drive means, driving radial and coaxial shafts for transmitting movement to the accessory gear box, the drive means comprising a high-pressure drive gear driving one of said radial shafts and connected to the high-pressure rotor, a low-pressure drive gear connected to the low-pressure rotor upstream of the high-pressure rotor and driving the other of said radial shafts, the low-pressure drive gear being supported in the intermediate casing by an axial-positioning bearing.Type: ApplicationFiled: August 22, 2008Publication date: February 26, 2009Applicant: SNECMAInventors: Arnaud Jean-Marie PIERROT, Stephane Rousselin -
Publication number: 20080226458Abstract: A turbomachine fan (10) comprising blades (16) mounted in slots (23) at the periphery of a rotor disk (12), and inter-blade platforms (20) having radial lugs for fastening to corresponding lugs of the disk (12), wherein each platform (20) is fastened to the disk (12) by means of a pin (64) inserted into orifices in the lugs of the platform (20) and into corresponding orifices in the lugs of the disk (12).Type: ApplicationFiled: March 14, 2008Publication date: September 18, 2008Applicant: SNECMAInventors: Arnaud Jean-Marie PIERROT, Stephane ROUSSELIN