초록 ▼

A variable area air system means for air blast type fuel nozzles for use in gas turbine engines wherein fuel/air ratios are controlled for the purpose of controlling engine emission products to meet mandated emission standards over a wide range of engine operating conditions. The variable area air m

A variable area air system means for air blast type fuel nozzles for use in gas turbine engines wherein fuel/air ratios are controlled for the purpose of controlling engine emission products to meet mandated emission standards over a wide range of engine operating conditions. The variable area air metering means is connected with a pressure responsive actuating means for controlling the air flow in single fuel system and dual fuel system air blast type fuel nozzle and support assemblies used in gas turbine engines.

대표청구항 ▼

An air blast type fuel nozzle assembly with a variable area air system means useful with a gas turbine engine having engine case means; comprising: a. support means connectable to the engine case means and having fluid pressure conduit means; b. nozzle means fixedly connected to said support means a

An air blast type fuel nozzle assembly with a variable area air system means useful with a gas turbine engine having engine case means; comprising: a. support means connectable to the engine case means and having fluid pressure conduit means; b. nozzle means fixedly connected to said support means and having the air supply means internal thereof, said nozzle means including: 1. an orifice adjacent a downstream discharge end thereof to discharge fuel, and 2. a pressure responsive variable area air metering means on an upstream end of the nozzle means including an air inlet means on said upstream end in air flow communication with said internal air supply means and sleeve means fixedly disposed on the nozzle means extending upstream thereof for forming a piston-receiving means and a valve means disposed in said air inlet means for controlling air flow entering the nozzle means at said upstream end and flowing through said internal air supply means, said air metering means including piston means slidably received within the sleeve means disposed on the nozzle means with said piston means having a downstream face portion inside the nozzle means for operative connection with a source of actuating fluid pressure through the conduit means of said support means when said assembly is connected to the engine case means and having piston rod means extending upstream of the face portion operatively connected to said valve means for actuating said valve means relative to said air inlet means.