US2010034640A1PendingUtilityA1

Nested core gas turbine engine

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Assignee: DEV SUDARSHAN PAULPriority: Sep 5, 2000Filed: Aug 6, 2009Published: Feb 11, 2010
Est. expirySep 5, 2020(expired)· nominal 20-yr term from priority
Inventors:Sudarshan Paul Dev
F02C 3/067Y02T50/60F02C 7/10F02C 3/145F02C 3/16F02C 3/10F05D 2220/328F23R 3/38F02C 3/045F02C 3/064F05D 2220/324F05D 2220/90F05D 2220/323F05D 2220/326F05D 2220/80F02K 3/068F02K 3/00F05D 2220/327F05D 2220/325
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Claims

Abstract

A fan for creating lift or thrust having a fan hub and fan blades depending from the fan hub. The fan blades have slots formed therein with openings facing substantially aft, relative to a rotation direction of the fan blades, wherein air blowing from the fan hub into the fan blades and out of the openings of the slots contribute to the aerodynamic performance of the fan blades to enhance the aerodynamic performance of the fan blades.

Claims

exact text as granted — not AI-modified
1 . A fan for creating lift or thrust comprising a fan hub and fan blades depending from the fan hub, the fan blades having slots formed therein with openings facing substantially aft, relative to a rotation direction of the fan blades, wherein air blowing from the fan hub into the fan blades and out of the openings of the slots contribute to the aerodynamic performance of the fan blades to enhance the aerodynamic performance of the fan blades. 
   
   
       2 . The fan according to  claim 1 , wherein the air blowing out of the openings of the slots is at least in part exhaust from an engine. 
   
   
       3 . The fan according to  claim 2 , wherein the air blowing out of the openings of the slots is at least in part exhaust from a gas turbine engine. 
   
   
       4 . The fan according to  claim 3 , wherein the openings of the slots are located on an upper surface of the fan blades.

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