Nose bullet anti-icing for gas turbine engines

Details Nose bullet anti-icing for gas turbine engines Nose bullet anti-icing for gas turbine engines

1984-10-29

1985-10-15

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

With safety device

415175, 416 95, F01D 508

Patent

active

045466041

ABSTRACT:
An anti-icing system for a rotating blunt nose bullet of a gas turbine engine uses a rotating thermosyphon effect to create a circulation within a chamber connected for rotation with the nose bullet which draws hot air from a downstream region of the engine forwards to impinge on the nose bullet over a small region close to the engine axis. This avoids complications with separate hot air supplies or electrical heaters. As shown in FIGS. 3 and 4 of the drawings, in one embodiment of the invention the chamber consists simply of a tube closed off by the nose bullet and in combination with an engine main shaft which extends to the turbine region of the engine to draw hot gas from this region. Alternatively, the chamber may extend only to the downstream end of the first compressor.

REFERENCES:
patent: 3830058 (1974-08-01), Ainsworth
patent: 3834157 (1974-09-01), Hoffman
patent: 3861139 (1975-01-01), Jones
patent: 3905191 (1975-09-01), Matto
patent: 3925979 (1975-12-01), Ziegler

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