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1. WO2020115424 - THRUST REVERSER PROVIDED WITH A LIGHTWEIGHT THRUST REVERSER FLAP

Publication Number WO/2020/115424
Publication Date 11.06.2020
International Application No. PCT/FR2019/052905
International Filing Date 03.12.2019
IPC
F02K 1/72 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
54Nozzles having means for reversing jet thrust
64Reversing fan flow
70using thrust reverser flaps or doors mounted on the fan housing
72the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow
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
F02K 1/82 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
82Jet pipe walls, e.g. liners
CPC
F02K 1/72
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
54Nozzles having means for reversing jet thrust
64Reversing fan flow
70using thrust reverser flaps or doors mounted on the fan housing
72the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow
F02K 1/805
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
805Sealing devices therefor, e.g. for movable parts of jet pipes or nozzle flaps
F02K 1/827
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
82Jet pipe walls, e.g. liners
827Sound absorbing structures or liners
F05D 2240/55
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
2240Components
55Seals
F05D 2260/38
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
30Retaining components in desired mutual position
38by a spring, i.e. spring loaded or biased towards a certain position
F05D 2260/963
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
96Preventing, counteracting or reducing vibration or noise
963by Helmholtz resonators
Applicants
  • SAFRAN NACELLES [FR]/[FR]
Inventors
  • BILLAULT, Romain
Agents
  • CABINET GERMAIN & MAUREAU
Priority Data
18/7254607.12.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) THRUST REVERSER PROVIDED WITH A LIGHTWEIGHT THRUST REVERSER FLAP
(FR) INVERSEUR DE POUSSÉE MUNI D'UN VOLET D'INVERSION DE POUSSÉE ALLÉGÉ
Abstract
(EN)
The invention particularly relates to a thrust reverser (1) comprising a fixed (2) and mobile (3) structure defining an air stream, a flap (4) comprising a single wall (40) perforated on the surface thereof, and comprising a structure (43) strengthening the flap (4) and having an acoustic function, the flap (4) being pivotally fitted to: - in a direct jet position, arrange the wall (40) along an acoustic section (31) of the mobile structure (3) and allow the circulation of an air flow through the air stream, the acoustic section (31) forming, with the structure (43) of the wall (40), an acoustic resonator and, - in a reverse jet position, arrange the wall (40) to deflect an air flow passing through the air stream and allow the passage, through the wall (40) and through the air stream, of one portion of the air flow deflected by the flap (4).
(FR)
L'invention concerne particulièrement un inverseur de poussée (1) comportant une structure fixe (2) et mobile (3) délimitant une veine d'air, un volet (4) comprenant une unique paroi (40) percée sur sa surface, et comprenant une structure (43) raidissant le volet (4) et ayant une fonction acoustique, le volet (4) étant articulé pour: - dans une position de jet direct, disposer ladite paroi (40) le long d'une section acoustique (31) de la structure mobile (3) et permettre la circulation d'un flux d'air à travers la veine d'air, ladite section acoustique (31) formant avec la structure (43) de ladite paroi (40) un résonateur acoustique et, - dans une position de jet inversé, disposer ladite paroi (40) pour dévier un flux d'air traversant la veine d'air et permettre le passage, par la paroi (40) et à travers la veine d'air, d'une partie du flux d'air dévié par le volet (4).
Latest bibliographic data on file with the International Bureau