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1. WO2021038172 - CONVERGENT-DIVERGENT FLAP PAIR FOR A VARIABLE-GEOMETRY TURBOJET ENGINE NOZZLE COMPRISING COOLING AIR CIRCULATION DUCTS CONNECTED THROUGH CONTACT SURFACES

Publication Number WO/2021/038172
Publication Date 04.03.2021
International Application No. PCT/FR2020/051505
International Filing Date 27.08.2020
IPC
F02K 1/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
06Varying effective area of jet pipe or nozzle
12by means of pivoted flaps
F02K 1/38 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
38Introducing air inside the jet
F02K 1/80 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
78Other construction of jet pipes
80Couplings or connections
CPC
F02K 1/1223
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
06Varying effective area of jet pipe or nozzle
12by means of pivoted flaps
1223of two series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure and the downstream series having its flaps hinged at their upstream ends on the downstream ends of the flaps of the upstream series
F02K 1/38
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
38Introducing air inside the jet
F02K 1/80
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
78Other construction of jet pipes
80Couplings or connections
F05D 2260/202
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2260Function
20Heat transfer, e.g. cooling
202by film cooling
Applicants
  • SAFRAN AIRCRAFT ENGINES [FR]/[FR]
Inventors
  • KOHN, Thierry
  • EICHSTADT, Frédéric, Paul
  • LACOMBE, Florent, Luc
  • LEGLAYE, François
  • LE PANNERER, Brice, Marie, Yves, Emile
Agents
  • AHNER, Philippe
Priority Data
FR190954030.08.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) CONVERGENT-DIVERGENT FLAP PAIR FOR A VARIABLE-GEOMETRY TURBOJET ENGINE NOZZLE COMPRISING COOLING AIR CIRCULATION DUCTS CONNECTED THROUGH CONTACT SURFACES
(FR) COUPLE VOLET CONVERGENT-VOLET DIVERGENT POUR TUYÈRE DE TURBORÉACTEUR À GÉOMÉTRIE VARIABLE COMPRENANT DES CONDUITS DE CIRCULATION D'AIR DE REFROIDISSEMENT RACCORDÉS AU TRAVERS DE SURFACES DE CONTACT
Abstract
(EN)
In a convergent-divergent flap pair (52B) for a turbojet engine nozzle of the variable-geometry convergent-divergent type, the convergent flap (40B) and the divergent flap (42B) comprise respective cooling air ducts (70, 78) connected to each other through air passage openings (154, 156) formed in respective contact surfaces (151, 93) of the convergent flap and of the divergent flap, said openings being arranged opposite each other.
(FR)
Dans un couple volet convergent-volet divergent (52B) pour tuyère de turboréacteur de type convergente-divergente à géométrie variable, le volet convergent (40B) et le volet divergent (42B) comprennent des conduits d'air de refroidissement (70, 78) respectifs raccordés l'un à l'autre au travers d'orifices de passage d'air (154, 156) formés dans des surfaces de contact (151, 93) respectives du volet convergent et du volet divergent agencées en regard l'une de l'autre.
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