Gas separation – Aircraft anti-ingestion means
Patent
1983-10-06
1985-04-09
Lacey, David L.
Gas separation
Aircraft anti-ingestion means
55385B, 55396, 244 53B, 137 151, 60 39092, B01D 4516
Patent
active
045099626
ABSTRACT:
An airflow particle separator for a gas turbine engine provided for removing foreign particles and moisture from the air flow. The separator comprises an inner wall and an outer wall defining a passageway therebetween, with the inner wall including an inlet portion diverging in a downstream direction away from the separator axis while converging towards the outer wall to form a throat to accelerate incoming air to a higher velocity in a substantially axial direction. The inner wall then converges towards the separator axis and diverges from said outer wall with a splitter ring disposed between the inner and outer walls for splitting said passageway into inner and outer passages, with the outer passage adapted to bypass moisture and foreign particles. The leading edge of the splitter ring is located downstream and inward of said throat. The inner wall upstream of the throat area is provided with a deflector surface in the form of a concave parabolic curve such that as particles strike the deflecting inner wall they will be focused in a predetermined bounce zone of the outer wall adjacent and downstream of the throat such that the particles will be bounced on top of and downstream of the splitter ring into the outer passage.
REFERENCES:
patent: 3148043 (1964-09-01), Richardson et al.
patent: 3309867 (1967-03-01), Ehrich
patent: 3362155 (1968-01-01), Driscoll
patent: 3766719 (1973-10-01), McAnally
patent: 3977811 (1976-08-01), Kuintzle, Jr.
patent: 4265646 (1981-05-01), Weinstein et al.
patent: 4268287 (1981-05-01), Norris
patent: 4389227 (1983-06-01), Hobbs
Breitman Daniel S.
Langenegger Henrique
Lacey David L.
Pratt & Whitney Canada Inc.
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