초록 ▼

A system for circulating heated gases within the circular leading edge of a jet engine housing to prevent ice build-up thereon, or to remove accumulated ice thereform. Hot gases such as air from a hot, high pressure section of the jet-engine are directed through a conduit. The conduit enters the ann

A system for circulating heated gases within the circular leading edge of a jet engine housing to prevent ice build-up thereon, or to remove accumulated ice thereform. Hot gases such as air from a hot, high pressure section of the jet-engine are directed through a conduit. The conduit enters the annular leading edge housing, usually from the aft side through a bulkhead, then turns about 90°to a direction tangential to the leading edge annulus. The hot gases exiting the tube entrain the cooler air in the housing, causing a much larger mass of air to swirl circularly around the annular housing. The entering hot gasses heat the mass of air to an intermediate, but still relatively hot, temperature. This large mass of circularly moving hot air is quite efficient in uniformly transferring heat to the skin of the leading edge without leaving any relatively cold areas and preventing the formation of ice thereon.

대표청구항 ▼

An anti-icing system for annular jet engine housings which comprises: a source of high pressure hot gas; at least one conduit means to carry hot gases from said source; a substantially closed annular housing at the leading edge of a jet engine, the annular housing containing a quantity of air; said

An anti-icing system for annular jet engine housings which comprises: a source of high pressure hot gas; at least one conduit means to carry hot gases from said source; a substantially closed annular housing at the leading edge of a jet engine, the annular housing containing a quantity of air; said at least one conduit means extending into said housing; an outlet on the end of each of said at least one conduit means extending into said housing, said outlet oriented to eject said hot gases at high velocity substantially tangential to a centerline of said annular housing; the mass flow rate of the gases and air swirling in said annular housing being at least about three times the mass flow rate of gases leaving said outlet; and whereby the high velocity hot gases entrain air within said annular housing so that the total volume of air and gases swirling around said annular housing has a substantially uniform temperature intermediate between that of said air and said hot gases.