FR3120852B1 - ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS - Google Patents
ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS Download PDFInfo
- Publication number
- FR3120852B1 FR3120852B1 FR2102698A FR2102698A FR3120852B1 FR 3120852 B1 FR3120852 B1 FR 3120852B1 FR 2102698 A FR2102698 A FR 2102698A FR 2102698 A FR2102698 A FR 2102698A FR 3120852 B1 FR3120852 B1 FR 3120852B1
- Authority
- FR
- France
- Prior art keywords
- holes
- cone
- front cone
- attaching
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/02—Hub construction
- B64C11/14—Spinners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/31—Retaining bolts or nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/33—Retaining components in desired mutual position with a bayonet coupling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
FIXATION D’UN CONE AVANT A AERODYNAMIQUE AMELIOREE Un aspect de l’invention concerne un ensemble pour moteur aéronautique comprenant un cône avant (2) et une virole (3) d’axe X, et n vis (4) de fixation coopérant avec des écrous (5), le cône avant (2) présentant une face avant (211) et une face arrière (210), le cône avant (2) étant percé de n premiers trous (23) et la virole (3) de n deuxièmes trous (30) placés en vis-à-vis des premiers trous (23), chaque vis (4) comportant une tête (41) de diamètre d1 et un corps (40) de diamètre d0, il est caractérisé en ce que le cône avant (2) comprend n logements (24) en arc de cercle ouverts, disposés sur la face arrière (210) du cône avant (2), les n premiers trous (23) débouchant dans les n logements (24) et que le logement (24) a un profil en T, une partie large (242) correspondant à la barre du T et une partie étroite (243) correspondant au pied du T, que la partie étroite (243) a une largeur égale à d0 ± 5mm et la partie large (242) a une largeur supérieur à d1 et que les premiers trous (23) ont un diamètre D1 inférieur à d1. Figure à publier avec l’abrégé : Figure 6ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS One aspect of the invention relates to an assembly for an aeroengine comprising a nose cone (2) and an X-axis ferrule (3), and n fixing screws (4) cooperating with nuts (5), the front cone (2) having a front face (211) and a rear face (210), the front cone (2) being pierced with n first holes (23) and the ferrule (3) with n second holes (30) placed opposite the first holes (23), each screw (4) comprising a head (41) of diameter d1 and a body (40) of diameter d0, it is characterized in that the cone front (2) comprises n housings (24) in an open arc of circle, arranged on the rear face (210) of the front cone (2), the n first holes (23) opening into the n housings (24) and that the housing (24) has a T profile, a wide part (242) corresponding to the bar of the T and a narrow part (243) corresponding to the foot of the T, that the narrow part (243) has a width equal to d0 ± 5mm and the wide part (242) has a width greater than d1 and the first holes (23) have a diameter D1 less than d1. Figure to be published with abstract: Figure 6
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2102698A FR3120852B1 (en) | 2021-03-18 | 2021-03-18 | ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2102698 | 2021-03-18 | ||
FR2102698A FR3120852B1 (en) | 2021-03-18 | 2021-03-18 | ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3120852A1 FR3120852A1 (en) | 2022-09-23 |
FR3120852B1 true FR3120852B1 (en) | 2023-03-17 |
Family
ID=75850336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR2102698A Active FR3120852B1 (en) | 2021-03-18 | 2021-03-18 | ATTACHING A FRONT CONE WITH IMPROVED AERODYNAMICS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR3120852B1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2362261A1 (en) * | 1973-12-14 | 1975-06-26 | Gen Electric | Fastening arrangement for nose part - esp for bullet-shaped nose as used on drive for air stream |
US5573378A (en) * | 1995-07-10 | 1996-11-12 | United Technologies Corporation | Gas turbine nose cone attachment |
FR2908827B1 (en) | 2006-11-16 | 2011-06-17 | Snecma | INPUT CONE FOR TURBOMACHINE |
US8292592B2 (en) * | 2008-04-02 | 2012-10-23 | United Technologies Corporation | Nosecone bolt access and aerodynamic leakage baffle |
FR2986046B1 (en) | 2012-01-24 | 2016-01-08 | Snecma | ASSEMBLY FOR A TURBOMACHINE BLOWER ROTOR |
FR2989115B1 (en) * | 2012-04-05 | 2015-10-30 | Snecma | SYSTEM FOR FASTENING A COME OF ENTRY OF A TURBOREACTOR |
FR3060056B1 (en) | 2016-12-13 | 2019-05-31 | Safran Aircraft Engines | CAP FOR TURBOMACHINE ROTATING INPUT HOOD, COMPRISING AERODYNAMIC EXTERNAL WALL BEYOND A CONE ATTACHMENT |
FR3063309B1 (en) * | 2017-02-24 | 2019-06-07 | Safran Aircraft Engines | TURBOMACHINE ROTATING INLET COVER, COMPRISING AERODYNAMIC EXTERNAL WALL AND CONE CLAMP |
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2021
- 2021-03-18 FR FR2102698A patent/FR3120852B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3120852A1 (en) | 2022-09-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PLFP | Fee payment |
Year of fee payment: 2 |
|
PLSC | Publication of the preliminary search report |
Effective date: 20220923 |
|
PLFP | Fee payment |
Year of fee payment: 3 |
|
PLFP | Fee payment |
Year of fee payment: 4 |