FR3144840B1 - Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée - Google Patents

Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée Download PDF

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Publication number
FR3144840B1
FR3144840B1 FR2300278A FR2300278A FR3144840B1 FR 3144840 B1 FR3144840 B1 FR 3144840B1 FR 2300278 A FR2300278 A FR 2300278A FR 2300278 A FR2300278 A FR 2300278A FR 3144840 B1 FR3144840 B1 FR 3144840B1
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France
Prior art keywords
fan
propulsion system
mechanical strength
improved mechanical
blades
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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
Application number
FR2300278A
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English (en)
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FR3144840A1 (fr
Inventor
Didier René André Escure
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
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Safran Aircraft Engines SAS
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Publication date
Application filed by Safran Aircraft Engines SAS filed Critical Safran Aircraft Engines SAS
Priority to FR2300278A priority Critical patent/FR3144840B1/fr
Publication of FR3144840A1 publication Critical patent/FR3144840A1/fr
Application granted granted Critical
Publication of FR3144840B1 publication Critical patent/FR3144840B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
    • 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
    • F05D2260/40—Transmission of power
    • F05D2260/403—Transmission of power through the shape of the drive components
    • F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
    • 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
    • F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
    • 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
    • F05D2270/00—Control
    • F05D2270/01—Purpose of the control system
    • F05D2270/11—Purpose of the control system to prolong engine life
    • F05D2270/114—Purpose of the control system to prolong engine life by limiting mechanical stresses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Le présent exposé concerne un système propulsif (1) aéronautique comprenant un disque (13) de soufflante et une pluralité d’aubes (14) rapportées et fixées dans des alvéoles (29) du disque (13), chaque alvéole (29) présentant une section de col (Sc) minimale définie par la formule suivante : où : D est le diamètre du rotor de soufflante (9) ; R est un rapport moyeu-tête du rotor de soufflante (9) ; ω est une vitesse de rotation du rotor de soufflante (9) ; n est le nombre de aubes (14) dans le rotor de soufflante (9) ; s/c est un pas relatif au niveau du sommet (21) des aubes de soufflante (14) ; et A = 1,26 ; B1 = 101,5 mm².tr².min-2 ; B2 = 75,1 mm².tr².min-2 et E = 57 970 mm4.tr².min-2.  Figure pour l’abrégé : Fig. 1
FR2300278A 2023-01-11 2023-01-11 Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée Active FR3144840B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2300278A FR3144840B1 (fr) 2023-01-11 2023-01-11 Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2300278 2023-01-11
FR2300278A FR3144840B1 (fr) 2023-01-11 2023-01-11 Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée

Publications (2)

Publication Number Publication Date
FR3144840A1 FR3144840A1 (fr) 2024-07-12
FR3144840B1 true FR3144840B1 (fr) 2025-02-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR2300278A Active FR3144840B1 (fr) 2023-01-11 2023-01-11 Système propulsif aéronautique présentant une soufflante dont la tenue mécanique est améliorée

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FR (1) FR3144840B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119129114B (zh) * 2024-11-15 2025-07-15 中国航发商用航空发动机有限责任公司 提供开式转子发动机反推力的设计方法、计算机可读介质、计算机程序产品、开式转子发动机以及风扇叶片

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014046735A1 (fr) * 2012-09-20 2014-03-27 United Technologies Corporation Longue queue-d'aronde de pale de soufflante pour rotors à pales individuelles
US10087948B2 (en) * 2015-03-30 2018-10-02 United Technologies Corporation Fan blade and method of covering a fan blade root portion
GB201819413D0 (en) * 2018-11-29 2019-01-16 Rolls Royce Plc Geared turbofan engine

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Publication number Publication date
FR3144840A1 (fr) 2024-07-12

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